[EnergyPlus_Support] Re: Heat Pump

["don_shirey" <shirey@xxxxxxxxxxxxxxxxxx>]

COIL:DX:CoolingBypassFactorEmpirical cools the air (does not heat it 
as you replied below).

COIL:DX:HeatingEmpirical heats the air (does not cool it as you 
replied below).

COIL:GAS:HEATING operates when the DX heating coil 
(COIL:DX:HEATINGEMPIRICAL) is unable to provide enough heat to meet 
the thermostat heating setpoint temperature.

In many instances, heat pumps are sized to meet the peak cooling
load. 
 In heating mode, the heat pump does the best it can to meet the 
heating load, but supplemental heating (typically natural gas or 
electric) is used to provide additional heating when it gets cold 
outside.

There is a cooling coil object called 
Coil:DX:MultiSpeed:CoolingEmpirical that you may want to investigate 
if you want two stages of cooling capacity (high and low).

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Cristina
Castaño/LABEIN" 
<ccastano@l...> wrote:
> 
> Thanks for your help Don,
> 
> We already knew that those are the names of three types of coils
and 
that
> these are explained in the input - output document and in the 
Engineering
> Manual but we do not understand the explanation of each coil.
> 
> We think that the COIL:DX:CoolingBypassFactorEmpirical heats the
air 
and
> COIL:DX:HEATINGEMPIRICAL cools it. And if  COIL:GAS:HEATING      
operates
> when the DX heating coil ( "HeatPump DX Heating Coil 1") is unable 
to
> provide enough heat by itself to maintain the thermostat heating 
setpoint
> temperature in the control zone, why isn´t there other coil to 
maintain the
> thermostat cooling setpoint temperature?.
> 
> Cristina.


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