The summary below lists the changes in the v3 and previous DesignBuilder releases:

Version Released   Description  Incremental Changes
3.4.0.041  18 Apr 14 Previous Release
  • CFD: Fix for error in radiant temperature calculations for temperature patches
  • All: Fix to make installation more reliable in certain cases
3.4.0.039 17 Feb 14 Previous Release
  • Fix for problem with chilled ceilings when multiple sub surfaces are applied to a surface.
  • Fix for visualisation of holes in inter-block partitions
  • Fix for categories of some constructions
  • Fix for position of overhangs, sidefins etc
  • Italian translation update
3.4.0.033 16 Dec 13 Previous Release
  • E+: Warn on various Detailed HVAC dialogs when a zone has not been selected
  • E+: The EnergyPlus RDD output file is now generated using IDF format so lines can be copied directly to IDF files
  • E+: Chiller reference temperatures displayed on the Chiller EIR dialog again
  • E+: Adjustment to the way mixed air setpoint managers are used in AHUs with blow through configuration
  • E+: Fix for problem with Outdoor air reset Setpoint mangers
  • CFD: Fix for external CFD problem in results display for buildings with underground areas
  • All: Updated example files
3.4.0.021  29 Nov 13 Previous Beta
  • E+: Fix for correct setting of Air loop dialog 100% outdoor air in heating/cooling options for Unitary AHUs
  • E+: Fix for incorrect filtering of small surfaces and sub-surfaces used for heated floor and chilled ceiling panels
  • E+: Fix for problem with automatic system for using numeric component names when one or more user-defined names are too long for EnergyPlus
  • E+: Fixes for the Simulation Manager installation and operation
  • E+: Optimisations variables can now be applied to multiple user-defined areas of the model
  • E+: Standalone EnergyPlus Results Viewer now released as v1.0
  • E+: Several new Optimisation variables
  • E+: New feature for Optimisation - Export results to CSV
  • E+: Optimisation grid data now available on the main Simulation > Optimisation results page
  • E+: New option on the Cooling design calculation options dialog for either "Sensible only" or "Sensible + Latent" loads to be used to calculate design airflow rates - default is now "Sensible only"
  • E+: Cooled beam system loads outputs now appear at zone level
  • E+: Fix for problem where IDF wasn't exported when Simulation Manager option selected
  • E+: Change in EnergyPlus v8.1 temperature distribution output format now accommodated fixing a problem in recent betas
  • E+: Fix for chilled ceilings and heated floors to provide a minimum flow fraction for zone surfaces of 0.001 - this seems to be necessary in E+ v8.1 to avoid errors
  • E+: Default Min nat vent setpoint temperatures changed from 22 to 24degC to avoid simultaneous heating and venting
  • E+: Humidifier electrical power consumption is now reported as Auxiliary Energy on the fuel breakdown graph
  • E+: Boiler parasitic losses now included as Heating (Electric) power consumption
  • E+: Mixed model control zone can now be defined correctly on unitary AHUs
  • E+: Improved IDF generation for detailed HVAC avoiding some spurious <Select zone> text - does not affect simulations
  • E+: Fix for problem where multiple HVAC zone components of a particular type can be added to a zone when only a single component of that type should be allowed
  • Daylighting: Fixes for BREEAM report when using comma as decimal variables
3.4.0.005 8 Nov 13 Previous Beta
  • Daylighting: Full fix for Radiance daylighting underestimation errors
  • E+: EnergyPlus v8.1 default option
  • E+: Simulation Manager uses 64-bit version of EnergyPlus when the OS is Windows 64-bit
  • E+: Parametric Analysis working again - on the simulation screen it now uses design variable data from the Optimisation and Parametric Analysis settings dialog
  • E+: Optimisation working again after problems in previous beta
  • E+: Fix for a detailed HVAC bug which could lead to duplicate chiller/boiler Setpoint Manager names after renaming chillers or boilers
  • E+: Fix for error in Scheduled nat vent where Delta T limit control is not correctly implemented when the Delta Y checkbox is unchecked
  • E+: Fix for problem where low cooling design loads were shown in light grey on systems using comma as decimal separator
  • E+: Fix for problem with Zone Exhaust Fans used on non-English language systems
  • E+: Fix for constant volume heated floors and chilled ceilings not including new E+ v8 Number of circuits and Circuit length inputs in IDF
3.3.0.059 23 Oct 13 Previous Beta
  • All: 100% surface glazing was being wrongly applied to surfaces adjacent to block wall edges.
  • E+: 2 extra fields added to System:Sizing and ZoneHVAC:LowTemperatureRadiant:VariableFlow objects for E+ v8 IDF generation - results unaffected by default but new options available in related DB dialogs
  • E+: Fix for Cooling tower IDF generation error where the Evaporation loss factor option was incorrectly implemented
  • E+: Multiple heating and cooling coils can now be added to AHUs
  • E+: Fix for confusing results display on System loads graph on Simulation screen for some cooling systems
  • E+: Fix for problem where System Loads graph did not pick up loads due to Cooled beams - this only affected the System Loads graph and not chiller fuel consumption or any other results. This is a partial fix where the Cooled beam system loads appear at building level only and not at zone level - a full fix will appear soon.
  • E+: Fix for problem where DB was failing to associate a DX coil in a dual duct system with a downstream Setpoint Manager
  • E+: Complete revision of the rules for Air loop sizing and the way that the associated options are set on the Air loop dialog + updated help text
  • E+: Many improvements in the Simulation Manager
  • E+: Improvements to the HVAC templates wizard which now has several new elements of data related to air loops and also accommodates ground source heat pump systems
3.2.0.073 13 Sep 13 Previous Release
  • Daylighting: Important fix for daylighting to remove a superfluous item of glazing from the Radiance model - fix typically increases daylight levels by 20-30% depending on the glazing type
  • E+: Fix prevents double-counting of mechanical ventilation in Cooling design calculations under certain circumstances when Detailed HVAC is selected
  • CFD: Fix for problem with boundary conditions editor dialog which did not display correctly in Windows 8 since a recent Windows update
  • CFD: Fix for bug where surface CFD heat patches lose their data after making changes on the CFD Boundary Conditions editor dialog
  • CFD: Improved radiant temperature calculations in CFD comfort post process
3.3.0.043  27 Sep 13 Previous Beta
  • Daylighting: Important fix for daylighting to remove a superfluous item of glazing from the Radiance model - fix typically increases daylight levels by 20-30% depending on the glazing type
  • Daylighting: Error where zone min/max illuminance values incorrect in CSV export fixed
  • E+: Ground source heat pumps now ready for beta testing - new templates and documentation available in program help (search for GSHP)
  • E+: Fix for problem where heated floors and chilled ceilings used in internal sub-surfaces were assigned to the wrong zone
  • E+: Fix prevents double-counting of mechanical ventilation in Cooling design calculations under certain circumstances when Detailed HVAC is selected
  • E+: v7.2 EXE option added back in to allow access to EnergyPlus v7.2
  • E+: Fix for earth tubes when used on machines using comma as decimal separator
  • E+: Fixed occupancy latent gain included in Activity templates
  • E+: German 3-letter months now correctly handled
  • E+: Fix for problem where airflow control windows' schedule wasn't always written out
  • E+: Electrical Storage and Inverters dialogs and help complete
  • E+: Default cooling design month changed for existing buildings when loading a location template
  • E+: New toolbar option to load eso file to Results Viewer
  • CFD: Fix for problem with boundary conditions editor dialog which did not display correctly in Windows 8 since a recent Windows update
  • CFD: Fix for bug where surface CFD heat patches lose their data after making changes on the CFD Boundary Conditions editor dialog
  • CFD: Improved radiant temperature calculations in CFD comfort post process
  • All: Fix for polygon operation that could affect generation of graphical display lists
3.3.0.029 31 Jul 13 Previous Beta
  • All: Italian language version is now up to date with the English language version with many improvements in translation compared with previous versions
  • E+: Optimisation constraints now working
3.2.0.070 18 Jul 13 Previous Release
  • Daylighting: Fix for bug where light is not passed through interior windows
  • Daylighting: Check to ensure Radiance is installed correctly before each calculation
  • Daylighting: The latitude and longitude are now written out correctly to the GenSky batch file for Radiance for systems using comma as decimal separator
3.3.0.024  16 Jul 13 Previous Beta
  • E+: Fix for DX cooling coil electricity consumption not being included in the Analysis screen results due to the E+ v8 changes in report variables
  • E+: Fix for check when using an EXE version which fails in recent versions of E+ due to missing version data in the EXE file properties - now using just the IDD to identify the version
  • E+: Detailed HVAC zone heating and cooling components now have zone heating/cooling energy correctly reported for all languages
  • E+: Chilled ceilings and heated floors report system heating/cooling at zone level
  • E+: EnergyPlus supported versions have been rationalised and the DesignBuilder-supplied EXE option removed partly due to problems in reliably identifying EXE file versions and also because the Simulation Manager and DOE options make it redundant
  • E+: When a material or construction name longer than a limit is used DesignBuilder will write out all materials and constructions using numeric references instead of the user-defined name - regardless of the state of the program option normally controlling this behaviour
  • E+: Simulation Manager dialog is more responsive plus several stability improvements 
  • E+: Simulation Manager dialog "View files" command now allows eso, idf, htm, csv outputs to be opened directly in the appropriate application - useful for quickly loading results with the Results Viewer
  • E+: Fix for bug where a daylight sensor could be positioned outside the zone in cases where the zone totally encloses another zone
  • Daylighting: The latitude and longitude are now written out correctly to the GenSky batch file for Radiance for systems using comma as decimal separator
  • Daylighting: Fix for bug where light wasn't correctly transmitted through interior windows in recent releases
  • All: Fix ensures graphic display is updated correctly if one of the draw opening commands is run and then the Escape key is pressed immediately 
  • All: Option to "Clear custom openings" is now available when using the Clear data command from the Openings tab
3.3.0.017  25 Jun 13 Previous Beta
  • E+: Sensible and total heating and cooling heat recovery data can be viewed when using Simple HVAC data in the same way as for Detailed HVAC
  • E+: PV panels can now be modelled using Simple HVAC as well as Detailed HVAC
  • E+: New zone exhaust Detailed HVAC component, works with Scheduled and Calculated natural ventilation
3.3.0.010 N/A Developer Only
  • E+: Uses EnergyPlus v8.0.0.008 with speed and other improvements over v7.2
  • E+: New boiler and water heater fuel types "Other fuel 1" and "Other fuel 2" which can be used to represent biofuels for example
  • E+: New flow mode types for boilers
  • E+: New Airflow control windows function
  • E+: New EnergyPlus Program option for IDF generation gives control over whether to provide user-defined names or use a number, overcoming problem where user-defined names are too long for EnergyPlus to read in correctly
  • E+: Internal test implementation of CO2 and contaminant control in Detailed HVAC
  • E+: Fix for bug where the infiltration schedule could not be changed at zone level
  • E+: 3 new Room air temperature distribution options: 3-Three node displacement ventilation, 4-Under floor air distribution interior and 5-Under floor air distribution exterior
  • E+: New model option to edit the open window/hole discharge coefficient used in Calculated nat vent simulations
  • E+: Cooling design airflow rate now calculated using enthalpy difference of design zone air and supply air conditions replacing the old sensible only calculation
  • CFD: Display options correctly updated when closing the CFD calculation options dialog
  • All: New icons for many of the new HVAC and other components currently under beta test
  • All: More checks for locked models to ensure that they can't be changed including OK buttons on most dialogs disabled
3.3.0.002 24 May 13 Previous Beta
  • Daylighting: Fix for "Null polygonlist" error when reviewing daylighting results for some zone geometries - fix requires model rebuild
3.3.0.001 23 May 13 Previous Beta
  • E+: Full implementation of E+ Scheduled nat vent control including scheduled upper and lower setpoints (Beta)
  • E+: Option to import GLD and GLHEPRO Ground heat exchanger data sets to Detailed HVAC ground heat exchanger components and templates
3.2.0.067 22 May 13 Previous Release
  • E+: Fix for cloning HVAC loops where AHUs and other components can have different settings to those of the equivalent source objects
  • E+: Fix for display of zone equipment fuel consumption rates in Detailed HVAC for non-English language versions
  • E+: Fix for problem where 2 different construction Materials having same properties apart from PCM properties are treated as if they are the same when generating IDF data
  • E+: Improved IDF generation for constructions and materials - user defined names now used
  • E+: Fix for loading Detailed HVAC Fan template data on computers using comma as decimal separator
3.2.0.060  15 May 13 Previous Beta
  • E+: Fix for Manual auto sizing method when using Simple HVAC - the manually set heating and cooling capacity values weren't being applied in recent betas
  • E+: Added option for Catering latent gain fraction to Activity templates
  • E+: New Construction tab data option for below grade walls
  • E+: Fix for Simple and Compact HVAC DHW when used with zone multipliers > 1 - change only affects E+ summary output which now agrees with DB output
  • E+: Option for Earth tube ventilation added
  • Cost: Improved cost model incorporates local currency conversion for construction costs and tariff analysis
  • E+: Fix for Outdoor air reset Setpoint Managers with second rule selected
  • E+: Fix for erroneous error message: Missing cost data in material
  • SBEM: Approved for use in Scotland for EPCs and Section 6 regulation compliance checks as an interim measure pending renewed availability of the approval scheme from DCLG
  • SBEM: Messages advise of approval in various UK and RoI regions
  • CFD: CFD assembly library updated to reduce convective gains from occupants in line with ASHRAE recommendations
3.2.0.048 20 Apr 13 Previous Beta
  • E+: Photovoltaic panels, inverters, storage and electrical power distribution with outputs in Summary report only
  • E+: Fix for economiser setpoints incorrectly generated in some cases
  • E+: Single zone heating SPMs can now be added to the demand sub-loop inlet which will allow both single zone heating and single zone cooling SPMs to be used simultaneously
  • E+: Fix for problem where louvres are set at window level but not at surface level
  • E+: Fix for problem where HVAC zone names are incorrectly set when making multiple changes at HVAC zone using Target tab
  • E+: Option to use a schedule for the heat recovery heating setpoint (when there is no economiser lower outdoor air temperature control in operation)
  • E+: Selecting the "Outdoor air reset" setpoint manager option now loads default options depending on the type of loop
  • E+: Fix for 13-Multi-zone cooling average and 14-Multi-zone heating average SPMs which now use the correct temperature values from the SPM dialog
  • E+: Fix for Temperature difference sizing option on HVAC Zone group and HVAC zone dialogs
  • E+: Detailed HVAC supply plenums can be placed again, fixing a problem with recent betas
  • E+: User defined performance curves can now be exported alongside components such as chillers which may use them allowing a complete dataset to be imported into other models
  • E+: Fix for problem linking a setpoint manager to a DX cooling coil
  • E+: Fix for setpoint managers when used with AHUs with draw-through fans
  • E+: In Simulation parametric analysis the 13-Cooling load output now refers to total cooling load instead of sensible load
  • E+: Activity templates now includes latent gains for Process and Miscellaneous gains
  • E+: Option to provide daily range multipliers for Cooling design day outside dry-bulb temperatures
  • E+: Cooling design results now display the correct site weather data generated by EnergyPlus allowing the true temperature, solar etc data profiles to be seen - previous site data was only approximate - this change does not affect calculated results, only site weather data display 
  • E+: Fix for Compact HVAC chiller fuel consumption in recent betas
  • All: Vapour transmission data is included for most materials in the database for use in condensation analysis
3.2.0.026 16 Mar 13 Previous Beta
  • E+: Fix for problem in previous beta where old files wouldn't open correctly on some machines
  • E+: Fix for GSHP Ground HX loop
  • E+: Fix for error in Heating design summary output headers introduced in previous beta    
3.2.0.020 11 Mar 13 Previous Beta
  • E+: IGDB v28 included in Panes database
  • E+: Full implementation of concurrent mixed mode natural ventilation systems across all HVAC and Natural ventilation model options
  • E+: Simple HVAC, further fix to ensure heating energy consumption calculated from Ideal Loads outputs rather than Zone/Sys Sensible Heating reports
  • E+: Performance curves for gas heaters in Detailed HVAC AHUs now provided in IDF data
  • E+: Fix for Calculated nat vent models needing a "dummy crack" on systems using comma as decimal separator
  • E+: Fix for problem where no surface and opening level output is generated in Heating and Cooling design calculations
  • E+: Various fixes for Detailed HVAC Setpoint managers
  • E+: Fixes for humidifer dialog - Rated power is now autosizable and Rated capacity is not per EnergyPlus requirements
  • SBEM: Doors in adiabatic surfaces no longer written out to avoid SBEM crash
3.2.0.008 14 Feb 13 Previous Beta
  • E+: Change to the way setpoint control IDF data is generated for AHUs, fixing problem where simultaneous heating and cooling could occur
  • E+: New tariff analysis dialog provides access to all of the commonly used EnergyPlus tariff options - early beta
  • Daylighting: LEED v3 daylight threshold criteria updated to correspond with July 2012 addendum to Q Credit 8.1: Daylight and Views—Daylight
  • SBEM: Fix for wall sub-surfaces adjacent to ground - now correctly treated as "Underground" in SBEM input file - was previously treated as "Exterior"
  • Condensation analysis: Fix for non-permeable layers
  • All: Sub-surfaces are now allowed on all ground-adjacent surfaces
  • All: new Spanish CTE constructions provided
  • All: New database engine uses less memory for components, templates and calculation results
3.2.0.003    31 Jan 13 Previous Beta
  • E+: In Simple HVAC the heating fuel consumption was being calculated using the the "Zone/Sys Sensible Heating" output instead of "Ideal Loads Total Heating Rate" for calculating energy consumption when the Room Ventilation HVAC Simple HVAC model option is set. This has been changed to use "Ideal Loads Total Heating Rate" instead and now the values reported by DB agree with E+ outputs
  • E+: Simple HVAC economiser data is now displayed on the HVAC tab and a new option has been added to allow the maximum outdoor air flow rate when ecomonisers are used to be entered
  • E+: Definition of an unoccupied zone has changed to now allow mechanical ventilation - this will affect building and block level results for models with zones having mech vent but no heating, cooling or occupancy
  • E+: Important fix for PTAC and PTHP systems which had an error related to the fan operation mode
  • E+: Fix for bug which under certain (rare) circumstances, could prevent zones from being added to HVAC zone groups
  • E+: Fix for problem where the extract fan is constant volume in a VAV air loop on initial selection from the AHU dialog
  • All: Fix for crash on start up for systems using comma as the decimal separator
3.1.0.103  12 Jan 2013 Previous Beta
  • All: Condensation Analysis for constructions on constructions dialog
  • All: Fix for parametric building with courtyard and pitched roof
  • E+: More fixes for solar hot water loops in Detailed HVAC
  • E+: Solar DHW and Solar heated floor HVAC templates added
  • E+: Fix for problem with mismatched openings not being resolved with rebuild in basement zones
  • E+: Early test interface for ground source heat pumps (surface, pond and vertical)
  • E+: Exclude the fan energy consumption in E+ summary output when using the Simple HVAC 1-NCM auxiliary energy option because this uses a different mechanism
3.1.0.089 7 Dec 12 Previous Beta
  • E+: Simulation manager now enabled for general use
  • E+: Fix for configuration of differential thermostatic control in solar hot water loops
  • E+: Parametric analysis enabled again after being disabled in last beta
  • E+: Fix for missing zone unit fan energy consumption in recent betas
  • E+: Scheme names removed from Plant loop dialog
  • E+: New program option allows Detailed HVAC zone component dialogs to target all zones in the zone group by default
  • All: Optimisation fixes to ensure that any data lost due to system errors (as opposed to data errors) will not be added to the graph and table
  • All: Optimisation results not respecting constraints not displayed, pending a full implementation of contraints early in 2013
  • All: Optimisation now works with the Simulation Manager allowing multiple parallel simulations
3.1.0.080 27 Nov 12 Previous Beta
  • All: First beta release with Optimisation working
  • E+: Detailed HVAC Unitary AHUs include a choice of On/Off or Constant volume fan
  • E+: Detailed HVAC Air Cooled Default chiller has a new minimum default part load ratio of 0.1 - previous value of 0 caused high condenser fan energy consumption
  • E+: Simple HVAC radiant heating is only allowed when the Room ventilation mechanical ventilation method and DesignBuilder sizing method are both selected - limitation now correctly documented
  • E+: Fixes for various Simple HVAC mech vent and sizing model options
  • E+: Fix to Solar hot water loops which should now work as expected
  • E+: All HVAC loops default to variable flow where not otherwise specified
  • E+: Fix for Simple HVAC DHW and Fan energy consumption when a zone has a zone multiplier applied
  • E+: Fix to Compact Schedule processor which could crash with double blank line at the end of the data
  • All: Fix for bug in previous beta where building block level component blocks cannot be entered
  • All: Thermal comfort calculator available from the Tools menu
  • All: Cost and Embodied carbon for shading now correctly reported for computers using comma as decimal separator
  • CFD: Fix for error that could lead to calculated external wind profiles having too low a magnitude at upper levels
3.1.0.068 27 Oct 12 Previous Beta
  • E+: Chilled water loop now defaults to variable flow
  • E+: Fix for problem with Coil:Heating:DX:SingleSpeed IDF generation for Unitary HP Air to air systems in previous beta
  • E+: Fix for problem where Compact HVAC unitary single zone systems with Mechanical ventilation switched off have no fan energy consumption - these systems are modelled using an cycling fan type now
3.1.0.065  22 Oct 12 Previous Beta
  • E+: EnergyPlus v7.2 is the main simulation engine 
  • E+: new Simple HVAC autosizing option allowing EnergyPlus to run autosizing calculations within the main simulation, without first running separate DB heating and cooling design calculations
  • E+: Heat recovery effectiveness now displayed in Simple HVAC when using Ideal loads mech vent option
  • E+: Simulation screen opens faster
  • E+: Fix for error in blinds IDF data in last beta
  • E+: Dual duct templates updated to provide correct "Central heating design supply air temperature" for sizing - previously these systems were undersized for heating by default
  • E+: Fix for the Ideal loads mechanical ventilation model option in recent betas using a workaround to a bug in EnergyPlus where fresh air delivery is calculated incorrectly in some cases
  • E+: Fix for Room ventilation mechanical ventilation when using 1-By zone option in last betas
  • E+: Option to allow individual constructions to override default solution algorithm - useful to ensure correct treatment of PCM which needs finite difference solution
  • E+: Fix for problem where Zone selection was not possible in Single zone heating/cooling setpoint managers
  • All: Model options dialog opens faster
  • All: Model data only used in Design calculations flagged with light background
3.1.0.052  6 Oct 12 Previous Beta
       
      • E+: Solar gains displayed when the "Internal gains including solar" output option is selected (reverting back to how this works in current release but label options correctly)
      • E+: Warning message when CTF algorithm used with PCMs
      • E+: Error message removed allowing Simple HVAC + Calculated nat vent + Ideal loads mech vent
      • E+: New Detailed HVAC template for VAV reheat with steam humidifier
      • E+: Fix for problem where Timestep not met tolerence values were not being applied correctly when the edit is made on the model options dialog
      • E+: Simple HVAC humidity control options added to HVAC templates
      • E+: When Simple HVAC humidity control is switched off then the "None" humidity control option is now provided to the EnergyPlus IdealLoads system
      • E+: Compact HVAC FCU now don't display off coil temperature options in the UI consistent wtih simulation operation
      • E+: New Detailed HVAC template for VAV system with humidity control
      • E+: When a Detailed HVAC zone group includes an ADU as well as other zone equipment, the ADU is now set to simulate first in the sequence by default to ensure that any remaining air loads are passed on the other zone equipment
      • E+: Fix for problem where changes made on the FCU dialog were not being saved correctly
      • E+: Fix for Detailed HVAC economiser action where control actions were provided to E+ incorrectly
      • E+: Terminology for zone HVAC equipment sequencing brought in line with latest versions of E+
      • All: Bug fix for recent betas for systems using "," as decimal separator
      • All: Materials can now have a fixed layer thickness associated with them and when such materials are selected on the constructions dialog, the thickness is loaded automatically and cannot be edited
      • Cost: Model updated
3.1.0.042 28 Sep 12 Previous Beta
  • E+: Fix for problems adding a humidifier to Detailed HVAC Unitary AHU
  • E+: Fix in Detailed HVAC check for valid humidifer/dehumidifier setpoint manager
  • E+: Revised Detailed HVAC templates, esp for ASHRAE 90.1 baseline systems
  • E+: Fixed primary/secondary cooling loop now incorporates a variable speed pump in the demand sub loop
  • E+: Heating and Cooling design results show conduction heat loss/gains correcting missing output data problem in recent betas
  • E+: Fix for bug that could prevent correct AHU night cycle operation
  • E+: Sensible Summary Heat Gains report now generated by default
  • E+: Solar gains now only displayed when the "Surface heat transfer including solar" output option is selected
  • E+: Removed scheme name from Detailed HVAC plant loop dialog as part of fix to prevent incorrect operation of plant loops    
  • All: New data provided on materials and constructions to help support ASHRAE 90.1 construction definition
  • All: Cost calculation method changed for constructions and materials - option for costing based on individual material layers introduced
  • All: Fix for problem related to very large models where DesignBuilder can crash due to the navigator list becoming corrupt
  • All: When the main DB screen is not maximised and a dialog is opened which would be larger than the main screen then the dialog is made to be the same size and position as the main screen
3.1.0.036  12 Sep 12 Special "South Africa SANS 10400-XA" Release
  • All: Fix for crash when exporting CSV report in recent betas
  • E+: Fix in Pane spectral IDF data for "flipped" layers
  • E+: Interior holes are modelled using the IRT material if not using finite difference and if not using the "Full interior and exterior" solar distribution option (which instead uses clear glass to get full solar radiation)
  • E+: Detailed HVAC DHW consumption rate now defined in gal/min when using IP units and the "2-Detailed HVAC data" HVAC activity model option
3.1.0.034  28 Aug 12 Previous Beta
  • E+: DesignBuilder Panes library updated with latest IGDB v25 Glass types
  • E+: New option to import WINDOW6 Glass data directly into the DesignBuilder Pane dialog
  • E+: New option for defining custom cracks for Calculated natural ventilation
  • E+: Fix for flipped glass panes with spectral data - data was not being correctly reversed in previous versions
  • E+: Minor error in building average temperatures, humidity and comfort conditions now corrected
  • E+: Site data displayed is now that generated by EnergyPlus and not derived directly from the hourly weather file - this fixes a problem where DB displayed hourly site data at a slight offset from other results
  • E+: Fix for problem with Detailed HVAC return air plenums
  • E+: Prevents use of VAV AHU with cooled beams
  • E+: Fix for problem with chilled ceilings
  • E+: Fix for problem with recent betas where too much outside air can be provided
  • E+: Fix for bug in recent betas where sub-surfaces adjacent to excluded zones are not treated as adiabatic resulting in EnergyPlus errors
3.1.0.018  08 Aug 2012 Previous Beta
  •  All: Fix for corrupt assemblies
3.1.0.015 N/A Development Version
  • E+: PMV Comfort control option added for Detailed HVAC
  • E+: Revised PCM dataset for BioPCM products
  • CFD: Fix for error related to an internal flow imbalance
3.1.0.013 19 Jul 012 Previous Beta
  • E+: Fix for heated floors and chilled ceilings which did not work in last beta
  • E+: Re-structuring of Outside air sizing data for HVAC Zone dialog - this data now comes from the HVAC model data dialog to avoid duplication of data
  • E+: Chilled beams fix
  • E+: Batch processor dialog improvements
3.1.0.011 16 Jul 12 Previous Beta
  • E+: Fix for detailed HVAC chiller dialog in recent betas and RC releases
  • E+: Fix for node connection error with Single Zone Cooling Setpoint Manager
  • E+: Fix for Compact HVAC PIU VAV systems in recent betas - fix made by EnergyPlus for the E+ v7.1 Compact HVAC expander utility ExpandObjects.exe
  • E+: Fix for convective heat transfer coefficient outputs not displaying in recent betas
  • E+: Fix for evaporative coolers
  • CFD: Fix for problem with full sized holes
  • All: Prevent crash in RC1 when navigating to component blocks
  • All: Trap error when processing zero volume zones in poorly formed models
  • All: Fix for Spanish language version
  • All: Fix for the old US ASHRAE material properties - thermal capacity was entered in KJ/kg-K
  • All: Fix for calculated zone floor area excludes sub-surfaces
3.1.0.008 N/A Previous Beta
  • E+: 110 new air cooled chiller templates with performance curves added
  • E+: Building solar hot water collector UI tidied - allow navigation, more appropriate default texture and labels in dialogs
  • E+: Chilled ceilings no longer require that all ceiling/roof surfaces in chilled ceiling zones have an internal source (though at least one must), likewise for heated floors
  • E+: Sub-surfaces in ceilings/roofs and floors can be used for chilled ceilings and heated floors respectively allowing selected areas of a floor/ceiling surface to have radiant panels
  • E+: Further improvements to the Import HVAC template dialog: a) unitary AHUs which now allow the control zone to be defined on the import wizard; b) chiller condenser type is stored with the template and only compatible chillers can be selected
  • E+: Radiant heaters now provide correct fractional surface areas in IDF data when defining the receiving radiant surfaces in zones with block connection link body surfaces
  • E+: Database of PCMs provided by Phase Change Energy Soultions
3.0.0.155 27 Jun 12 Previous Beta
  • E+: EnergyPlus v7.1
  • E+: 4 new dehumidification control options for Unitary AHUs
  • E+: PCM help now available and a material is provided in materials database
  • E+: Detailed HVAC plenum dialog zone selector includes current zone.
  • E+: Solar hot water loop for DHW and heating
  • E+: Scheduled infiltration for simulation and cooling design
  • E+: Removed superfluous "Fan operation" option on unitary AHU dialogs
  • E+: HVAC template import now working correctly
  • E+: HVAC template import thumbnail has improved resolution
  • E+: Default PCM temperature-enthalpy properties corrected
  • E+: New Constant CoP chiller now incorporated in Detailed HVAC
  • E+: Fix for calculation of glazing transmission properties due to introduction of E+ v7.1
  • CFD: Fix for CFD ventilation boundary conditions just off orthogonal with primary grid axes (not being generated properly)
  • CFD: CFD data export now correctly formats numeric data on systems with comma as decimal separator
  • CFD: Fix for flow balance calculations in multi-zone CFD models with merged zones
  • CFD: Assemblies can now be used for external CFD simulations as well as internal ones
  • CFD: New option to show/hide component blocks and assemblies when viewing external CFD results
  • RT2012: Early test version    
  • Daylighting: Green Star sky model changed to Uniform cloudy and the Sky option is left enabled on the Daylighting calculation options dialog
  • All: Supports Revit 2013
  • All: Significant mprovements to gbXML import based on using space boundaries (early test version)
  • All: Users are now prevented from editing the name of child merged zones in the navigaor to avoid problems which previously arose from doing this
3.0.0.139 23 May 12 Previous Beta
  • SBEM: Prevent standard component blocks from being added in modeller and prevent add block at block level when using SBEM
  • All: Fix allows repeated copy of openings at surface level
  • E+: Interface for dehumidification for Unitary heat pumps added
  • E+: Phase change materials - early test version
  • E+: Load HVAC template wizard now allows data for air and water loops to be entered
  • E+: Fix for changes to EnergyPlus solution method settings on the Model data dialog having no effect
  • E+: New 60 and 30 timestep per hour options have been added for testing, especially for PCM - these new options may be removed again if problems encountered previously with short timesteps still exist
3.0.0.134 17 May 12 Previous Beta
  • E+: Cooling design summary tab now provides building total cooling loads based on time of maximum building cooling load, as well as existing zone outputs
  • E+: Fix for Calculated natural ventilation simulations for control of internal openings to ensure that it is occupied zones whose control settings govern the opening of windows and vents between occupied and unoccupied zones
  • E+: Load and save Detailed HVAC templates (initial test implementation - further improvements to follow)
  • Daylighting: Fix for problem with IP units where units for working plane height and grid sizes were inconsistent - now they are always quoted in ft
  • All: Early test version of the DesignBuilder cost modeller - outputs on the Cost and Carbon screen
  • All: Embodied carbon outputs now available on the Cost and Carbon screen
  • CFD: New advanced option on CFD model data tab to allow the solid cell overlap tolerance to be defined
3.0.0.126 4 Apr 12 Previous Beta
  • SBEM: Fix for case where entirely internal zones can be merged incorrectly under some circumstances
  • All: German language version now displays graph captions correctly
  • All: New HTML5 format used for program help
  • All: Further fixes for very large screens - tested on 27" iMacs under bootcamp
  • E+: 4 new setpoint managers: Single zone heating, Single zone cooling, Multi-zone cooling average, Multi-zone heating average
  • E+: Evaporative coolers (5 EnergyPlus options)
  • E+: Additional carbon emssion factor data added for biomass fuel under the "Other" heading on the Legislate regions dialog
  • E+: Tidied Setpoint manager dialog and help
3.0.0.115 30 Mar 12 Previous Beta
  • All: Fix for large screen issue - DesignBuilder now runs on 27" iMacs for example 
  • E+: Simple HVAC has new options for heat recovery, economisers and humidity control
  • E+: Humidity control now possible in Cooling design calculations
  • E+: in Simple HVAC, with ASHRAE option, cooling systems now autosized based on total cooling load instead of sensible load
  • E+: 3 new window shading options introduced: Horizontal solar, Outdoor air temp + solar on window and Outdoor air temp + horizontal solar
  • E+: Detailed HVAC default zone oversizing factors of 1.25 for heating and 1.15 for cooling replace values of 1
  • E+: Detailed HVAC default fan sizes set as appropriate for local zone units and AHUs
  • E+: Fix for "mSelObj not set" when editing AHU fan component details
  • E+: 2. Fix for HVAC heated floor construction check
  • All: Merge zone dialog now works correctly on 800 x 600 pixel screens
  • E+: Fix for Plant loop dialog on Plant operation schemes tab for systems using comma as the decimal separator
  • E+: Fix for generation of E+ polygons for complex gbXML shading planes
  • E+: Fix for PTAC and PTHP dialogs where the Fan operation mode was not configured correctly
  • E+: Default option for subtracting floor volume from zone volume has changed - floor volume will now be subtracted by default in newly created models
  • Known issue - cost and embodied carbon data not showing on Cost & carbon screen
3.0.0.105 29 Feb 12 Current Release
  • Fix for Revit plugin on 64-bit systems
3.0.0.104 9 Feb 12 Previous Release
  • E+: The "Air velocity for comfort calculations" data is available again on Model options and Simulation Calculation Options dialogs following accidental removal in previous versions
  • Revit: The DesignBuilder Revit plug-in has been improved and should now work on Revit 64 bit
3.0.0.103  7 Feb 12 Current Beta
  • E+: Fix for internal source position in heated floors and chilled ceilings in internal floors/ceilings
  • E+: Fix for low water flow rates in heated floors and chilled ceilings not being transmitted correctly to EnergyPlus    
  • E+: Fix for low values of water flow rates on several HVAC dialogs
  • E+ Fix to prevent a crash when setting Compact HVAC plenum zone name
  • E+: Fix for incorrect operation of night cycle in Detailed HVAC AHUs
  • E+: Fix for DHW Water outlet schedules not being included in IDF data under some circumstances
  • E+: Prevents invalid names for Detailed HVAC components
  • E+: Fix for Cooling design data options becoming fixed to All and Site when entering the Cooling design screen at site level
  • E+: Fix for non-convex surfaces that can be produced under some circumstances, causing EnergyPlus warnings
  • E+: Excluded zones should no longer be included in IDF data generated for detailed HVAC when the zone is excluded after it was initially included in a zone group
  • CFD: Fix for problem with some component block boundary conditions not being picked up by the calculations
  • CFD: Changes to the grid are now saved if the CFD simulation is not carried out straight away afterwards
  • SBEM: Direct lodgement to Elmhurst option now complete
3.0.0.101 1 Feb 12 Previous Beta
  • E+: Fix for Detailed HVAC water cooling coils when using the detailed definition option
  • E+: Fix for Detailed HVAC water and DX cooling coil dialogs where incorrect items can appear under some circumstances
  • E+: Fix for parametric screen where results can display as grid with garbage data when the Grid data is selected on the main Analysis tab of simulation screen
  • E+: Fix for water heating coil dialog to ensure rated inlet/outlet air temperatures are correctly treated as numeric data solving a unit conversion problem when using IP units
  • E+: Fix for problem that prevented VAV systems from being connected up to certain ADU types
  • E+ Fix for VAV no reheat ADUs when the Scheduled minimum flow rate option is used
  • SBEM: Fix for Scottish EPC calculations
  • SBEM: Fix for Elmhurst Lodgement
  • All: Fix for download on demand service due to problem in last beta
  • All: LCA embodied carbon data added for Spanish materials
  • All: Fix for inheritance of data for interblock partition openings - now comes from building level instead of block level
  • All: Fix for lost openings when moving building at site level
3.0.0.098 18 Jan 12 Previous Beta
  • E+: Fix for detailed HVAC drawing guides
  • E+: Detailed HVAC error system now generates correct error messages fixing a problem with the last release
  • All: Fix allows larger models to be simulated on machines with less memory fragmentation
  • SBEM: Direct lodgement for Elmhurst energy assessors
3.0.0.097  12 Jan 12 Previous Release
  • CFD: Fix for general problem with CFD in 3.0.0.096
3.0.0.096  11 Jan 12 Previous Release
  • CFD: Fix for problem where opening boundaries with very small dimensions lead to flow imbalance
  • CFD: Fix for problem where imported openings with very small flow rates lead to flow imbalance
  • CFD: Faster CFD boundary generation
  • E+: Fix for slow dynamics in large detailed HVAC models
  • E+: Fix for problems with display of multiple chillers/water heaters in previous release
3.0.0.095 6 Jan 12 Previous Release
  • Uses SBEM v4.1.d as required from 16 Jan for lodging EPCs in England and Wales
  • E+: Fix for Non-English language versions for a bug with naming of detailed HVAC connection components
3.0.0.092 23 Dec 11 Previous Release
  • E+: Fix for Detailed HVAC component naming error when there are more than one AHU
  • E+: Allows 7/12 schedules to be used for setpoint manager setpoint schedules
  • E+: Display improvment for primary/secondary circuit chilled water loops - the common pipe between the flow and return sub-loop nodes is now shown in the Detailed HVAC edit screen
  • CFD: Fix for possible crash when setting up the CFD calculation for large models
  • CFD: Fix for models with many windows each having very small air flows    
  • All: Fix for problem with italian translation in v3.0.0.091
3.0.0.091 20 Dec 11 Previous Release
  • E+: Fix for bug in detailed HVAC chiller setpoint manager (required for variable flow circuits by E+ v7)
  • E+: Fix for Detailed HVAC default loop naming bug(externalised text)
  • All: Fix for bug with Drag block surface
3.0.0.090 16 Dec 11 Current Beta
  • All: Fix for bug with conversion of Pitched roof outline blocks to building blocks
  • E+: Translatable text for default Detailed HVAC component names
  • Daylighting: Translatable text for daylight map key
3.0.0.088 15 Dec 11 Previous Beta
  • All: Fix for crashes following DXF floor plan import on some machines
  • All: General block type now shown in Block tab of Model options dialog and for these block types, Block height data is no longer available and other minor improvements to block data editing
  • All: Possible block intersection problem fixed after block type changed from General to Pitched roof
  • All: Enhancement/fix for gbXML import
  • Sunpath: Improved clarity of diagram
  • E+: Detailed HVAC AHU Heat recovery schedule now written to IDF correctly
3.0.0.087 7 Dec 12 Previous Beta
  • E+: EnergyPlus v7 
  • E+: IGDB v20 included in Panes database
  • E+: Fix for supply and return plenums in Detailed HVAC 
  • E+: Exterior window reveals can be modelled
  • E+: Revised mechanism for dealing with zones with insufficient airflow paths in AFN simulations should result in less "extra crack" objects
  • E+: Fix for incorrect floor area used as deminonator when viewing normalised simulation output with merged zones
  • E+: Improvements to the Detailed HVAC option to use Simple HVAC activity related data such as setpoints, ventilation and hot water demand
  • E+: Water outlets can now access zone Activity hot water demand data
  • E+: Heated floors and chilled ceilings can now access Simple HVAC heating and cooling setpoints and schedules
  • E+: Fix for Heated floors and Chilled ceilings to ensure that they are not applied to block connection edge "nomass" surfaces
  • E+: Further improvements to Detailed HVAC results for AHU components
  • E+: Context sensitive help in HVAC dialogs
  • All: Openings in internal partitions that extend to the floor now shown correctly
  • All: Faster selection of blocks at building level
  • Visualisation: Sunpath diagram can be displayed and solar position moved using mouse
3.0.0.078 3 Nov 11 Previous Beta
  • E+: Mains water temperature can now be entered using a choice of methods
  • E+: Gas heating coils can now be selected in Detailed HVAC
  • E+: Water heater dialog improved
  • E+: Fix for HVACTemplate:Zone:VAV:FanPowered compact HVAC systems where in some cases DB was writing out 1 too many lines of data
  • E+: Fix for Detailed HVAC dialogs where Autosize data is overriden, the data is now read back in correctly in regions where , is used as decimal separator
  • E+: New Outdoor air temperature reset option for Detailed HVAC Setpoint managers
  • E+: New pre-defined Detailed HVAC Primary/secondary chilled water plant loop.
  • E+: New HVAC enhanced dehumidification mode for DX cooling coils
  • E+: Fix for Detailed HVAC DX cooling coil IDF generation
  • E+: Additional Detailed HVAC network checks
  • E+: The Detailed HVAC water heating coil now incorporates a Rated Ratio For Air And Water Convection attribute
  • E+: DX heating coils now have defrost and crankcase electric heating energy included in the fuel totals reported by DB
  • E+: Detailed HVAC water heater fuel consumption now correctly reported in DB
  • All: Fix for problem where report topics were deleted when site data is modified
  • All: A default texture is now used in rendered views for surfaces referencing textures whose file is missing
  • All: New option on 'Save without results' dialog to cover report topics
  • All: Model options dialog works correctly now when at a Detailed HVAC component
  • SBEM: Fixed bug in PAYG applied to Part-L in last beta
  • LIDER: New version of the export tool fixing problems with previous releases
3.0.0.073 20 Oct 11 Previous Beta
  • E+: Support for the new EnergyPlus v7 with significant speed improvements especially for Calculated natural ventilation and radiant heating systems
  • E+: Compact HVAC Unitary System loads are now displayed again - this data was not displayed in last few releases
  • E+: Support for Compact HVAC Basebaord/radiators removed due to problems getting these to work well with the rest of the HVAC system - users are advised to instead use either Simple or Detailed HVAC for modelling radiant heating systems
  • E+: Fix for zone groups not being added to newly created zones
  • E+: Modification to incorporate fan operating mode in PTHP and PTAC units
  • E+: Detailed HVAC now uses the control radiant fraction from the Simulation calculation options dialog allowing operative temperature control
  • E+: Various fixes for Plant loop dialog
  • E+: Option for 1 timestep per hour removed as it does not give good accuracy and causes problems with some output
  • E+: Advanced model options on Model options, Cooling design and Heating design dialogs tidied up
  • E+: New model option to control the maximum number of iterations to be used in the AFN
  • E+: New calculation options for controlling finite difference calculations in E+ v7
  • E+: Calculation option added to control the polygon clipping method used in E+ v7
  • DBSim: Overhaul of DBSim shading algorithm speeds shading calculations up by up to 20 times compared to previous versions, with options now available for including/excluding interior surfaces
  • DBSim: Bug fixed to prevent a crash when viewing hourly or sub-hourly DBSim results from 1 Jan under certain circumstances
  • CFD: Improved solid cell identification
  • CFD: Fix to prevent specified component block flux being erroneously set in certain adjacent cells
  • CFD: Fix to correct generation of supply boundaries rotated around X/Y axes
  • CFD: New option to hide component blocks when in CFD wire-frame display mode
  • Daylighting: Fix for European regional settings where the building daylight map was not always shown due to a mismatch between the working plane heights listed in the options drop list and the actual working planes
  • All: Fix to cutting tool where block contains partition component blocks (enforcing re-zoning of block as for blocks containing conventional partitions)
  • All: Improved treatment of pitched roof block overhangs - new mechansim for generating these has been included which results in exact overhangs being generated under most circumstances
  • All: Further fix for clock tamper bug for European regional settings
  • All: Fix for 'Pre-design' constructions model option to ensure that correct construction is used in simulations, especially external walls
  • All: Fix for parametric simulations where constructions used as a variable - correct constructions now used
  • All: Fix for problem where the 3-D DXF export excludes window frames when the frame width is very low
3.0.0.064 28 Sep 11 Previous Release
  • E+: Fix for HVAC component dialogs for PTAC and PTHP
3.0.0.063 27 Sep 11 Previous Beta
  • E+: Updated for the latest v19 of the IGDB glazing database
  • E+: Fix for natural ventilation data showing up under DHW on the HVAC tab under certain circumstances
  • E+: Fix for bug where airflow through holes is reported at the surface level instead of hole level in recent versions having knock on effect on CFD boundary condition imports
  • E+: Increased enthalpy limits for mixed mode control in Compact HVAC
  • E+: New Detailed HVAC option to use activity setpoints together with demand schedules on the HVAC zone dialog
  • E+: New Unitary DX cooling coil option for AHUs with additional option for single speed or 2 stage with humidity control
  • E+: Boilers and chillers added to HVAC templates and unitary performance data correctly labelled
  • E+: Fix for Unitary heating and cooling performance data not always displayed on HVAC tab in Compact HVAC model data
  • E+: Fixes and improvements for cooling tower dialog
  • E+: Mixed mode natural ventilation option now only shown for calculated natural ventilation and Compact HVAC
  • Daylighting: Can now handle very large contour map data sets
  • Daylighting: Improved error control in daylighting
  • Daylighting: Improved handling of merged zones
  • Daylighting: Fix for crash in some roof zones
  • Daylighting: New option to include/exclude other buildings from Radiance simulation
  • CFD: Fix for bug where CFD surface patches can transform into other opening types in certain cases
  • CFD: Fix for component block CFD boundary conditions being missed when contained in merged child zones
  • All: Fix for 'clock tamper' bug where users with intermitemt internet connections were getting incorrect error messages
  • All: Fix for lost custom openings when drawing partitions
  • All: Fix for bug preventing construction lines from being deleted at surface level
  • All: Fix for sub-surface texture bug
3.0.0.048 19 Aug 11 Previous Release
  • CFD: Fix for bug that could prevent temperature boundary conditions from being assigned correctly to sloping surfaces with certain orientations.