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Hi all,

HVAC/cooling/AHU cooling/cooling coil setpoint means air distribution temp or the chilled water temp? I take it as the former one. Am I right or not? Any comments provided would be apprecia ...

Hi all,

In my simulation results, I found that the 'radiant T' was very higher. And it maybe cause the bad influence of 'Fanger PMV' results. In the help file of DB, it says “Radiant Temperature - ...

Hi DaeWoongHa

It's easy! If you in the 'Simulation' screen, in the left of the screen, you'll see a 'Display options', and in the Data/Inteval tab you'll find 'monthly'. You choose it and you'll g ...

Hi Laurent,

I maybe understand what you say. However, I changed the ac/h in the HVAC template data/Ventilation/Mechanical Ventilation option. I defined a lower value of 2 than the former one(3). An ...

Hi Laurant,

I’m confused again! Several days ago, the ‘cooling setpoint’ could not be maitained and the ‘air T’ was higher than the ‘cooling setpoint’ which seems that the ‘plant sizing’ lacks powe ...

Hi max,

I don't know this would be helpful or not.In the help file of DB, it says,
'Zone/Sys Sensible Heating' - is the sensible heating effect of any air introduced into the zone through the HVA ...

Hi Fran,

I don't know this would help you or not. I think that you should not only check the 'region' but the 'category'. If your category is 'A', and you try to find it in 'B' or in other category ...

Hi,

If I set the ‘central cooling Coil type’ as ‘ chilled water’ and ‘cooling coil setpoint’ as ‘7.00°C’ in the building level HVAC /AHU cooling tab, does it means that ‘chilled wate=7.00°C’ ? And ...

Hi,

I found that the ‘RH’ had a bigger value which would cause bigger value of ‘FangerPMV’ and more ‘discomfort hrs’ in the ‘comfort’ output! Higher value of ‘RH’ would be related to ‘Occupancy’ an ...

Hi all,

In the results of my simulation, I found that the ‘air T’ could not maintain at ‘ cooling setpoint’. The reason maybe the palnt sizing lacks power! In the model option, I set the ‘HVAC sizi ...

Hi Laurent,

I found the reason causing the ‘air T’ problem. Thank you for your help. The reason is that the ‘AHU schedule’ of the model is wrong. I forget to check the ‘AHU cooling’ schedule, and t ...

Hi Laurent,

Thank you for your reply! I worked out the reason of the difference of the ‘outside dry-bulb Ts’ the day before yesterday. But I cann’t agree with that ‘higher temperature during day is ...

Hi DB_support,

I know that you're very busy as many topics are posted everyday and you're busy with perfecting and developing new version of DB! Tough work, but promising! However, I find that som ...

Hi,

In the help file in DB about 'Defining setpoint temperature schedules', it says, if the valume=0 ,Equipment is off,
> 0.5, Equipment is controlled using the main temperature setpoint dat ...

Hi all,

I found that the hourly outside dry-bulb T in the cooling design(15 jul. cooling design day) is different from the hourly T in 'Simulation' of 15 jul. simulation period(please have a look ...

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