DB out put and cooling energy from E+ ABUPS

lee68 · Posts: 6

Dear Team and other experienced members,
I need some help in correlating the results between E+ and Designbuilder. The E+ results for annual cooling and heating energy (from the report ABUPS) are way higher than DB Chiller (electricity) results. I read the description - calculation of Designbuilder output from EnergyPlus report variable but still could not find the relation between E+ ABUPS cooling energy and chiller (electricity). What exactly is the Cooling Load corresponding to the Cooling energy consumption of ABUPS - which I can divide by COP. Or, in other words what is DB equivalent of total annual cooling energy, if any. Which cooling energy (or heating energy) I should use as my output. Any example would be greatly appreciated. I look forward to hearing from the experts..

The heating/cooling load from the heating/cooling design also do not exactly match with loads in .eio file..

thanks a ton,
John

lee68 · Posts: 6

Hello there !!
I have not received any response Sad

John...

Andy Tindale · Posts: 1026 Location: Stroud

Hello John,

The first step is to check the help page that explains how DB calculates the results data it displays from E+ eso output data.

http://www.designbuilder.co.uk/programhelp/calculation_of_designbuilder_output_from_energyplus_report_variables.htm

Bear in mind that DB calculates plant energy consumption internally based on heating and cooling coil loads in the E+ eso output file. The data in the ABUPS report will use different boiler and chiller CoP values and does not include distribution losses included by DB.

Andy

lee68 · Posts: 6

Andy,
Thanks for the clarification. It is a bit clear to me
though I would rephrase the question here - what would be the equivalent variables for Chiller (Electricity) and Heat generation (Gas) from .eso reort?

I am also not sure what do you mean by "The data in the ABUPS report will use different boiler and chiller CoP values .... " Does it mean that these values of COPs are different than the one I enter under HVAC tab? If yes, where does that COP come from?

You guys are awesome in responding to the questions. I truely apprecaite your help..
John.

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