Understanding cooling

koen.govers · Posts: 80

I want to be sure that I understand the coooling proces in DB.

I want to cool a space when the temperature in the space exceeds 25°C. The cooling needs to ensure that the temperature stays 25°C.

The 'cooling setpoint temperature' is in my opinion the temperature of the air blown into the space. Ok?
(BTW, Is there a way to simulate a cool system which works radiative ? Like a cooling ceiling? )

I use the compact HVAC model. Where do I choose the setpoint from which inside temperature I want to start cooling ?

Koen

Andy Tindale · Posts: 1196 Location: Stroud

The cooling set point temperature on the activity tab is the air temperature above which cooling operates - it is not the temperature of the air being delivered into the space.

When using Compact HVAC VAV system, you can define the off-coil temperatures at the building level under the Cooling header.

In Simple HVAC it is not possible to define the off-coil temperature - you simply define the heating and cooling set points and EnergyPlus calculates the heating/cooling loads required to meet them.

Regards,

Andy

koen.govers · Posts: 80

Ok Andy. I had misunderstood the help file.
Thank you for the quick respons.

Koen

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