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Re: [EnergyPlus_Support] total cooling load
Tek
if you have set the humidity level to some value for your zones then purchased total would be different from purchase sensible ( which i believe you have done in your case, now), in this case purchase air will tell you the sensible and total energy. The Difference of the Two will give you the latent energy removed from your zone.
Thanks
Rahul Chillar
teklay Weldeabzgi <teklay1979@xxxxxxxxx> wrote:
if that is correct why is the Purchased Air Total
Cooling Energy[J] greater than Purchased Air Sensible
Cooling Energy[J].
--- Rahul Chillar <chillarrahul@xxxxxxxxx> wrote:
>
> Hello
> To determine the actual latent loads you will have
> to simulate an hvac system, i think purchased air
> will give only the sensible total loads and not
> latent because it is not a system which can control
> the humdity levels etc of your zones.
> Purchased air is designed as a wonderful concept to
> get the user in the ball park without having to
> simulate a system.
> Reporting the below variables should be sufficent
> for your case where you only need to heat the
> building.
> HVAC,Average,Purchased Air Total Cooling Rate[W]
> HVAC,Sum,Purchased Air Total Cooling Energy[J]
> thanks
> Rahul Chillar
>
> teklay Weldeabzgi <teklay1979@xxxxxxxxx> wrote:
>
> i am simulating buildings to know the cooling load
> reduction using different building design
> parameters.
> i am using a purchased air system. we i need to see
> the total cooling energy of the zones is the
> AIR:Purchased Air Total Cooling Energy give me the
> result. the ONE:Zone/Sys Sensible Cooling Energy
> gives
> the sensible energy only. is AIR:Purchased Air Total
> Cooling Energy the sum of the latent heat gain and
> the
> sensible heat gain. to make cealr my question how do
> i
> get the cooling load of the building?
> tek
>
>
>
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Rahul Chillar
Grad Student
Building Systems lab
Univ Of Illinois Urbana Champaign
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