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[EnergyPlus_Support] Re: Problems with Heat Pump AirToWater

Mr. James V Dirkes II

I´m glad and aprecciate your atention gave in this simulation!

I understand what you mean and I agree with you when I talk about HeatPump:WaterToAir, but in this case it´s AirToWater, I will explain below.

About the heating system, In my simulation I have an Heat Pump Water Heater, this object provides a model taht is compound object consisting of a water heater tank, a direct expansion (DX) "coil" and a fan to provide air flow. In my case the location of DX Coil compressor it´s outdoor and the water heater tank it´s located in the zone.

Following the documentation and the example file (HeatPumpWaterHeater file) I don´t have use AirLoopHVAC, because in the field of Heat Pump Water Heater I connecting the three components (DX Coil, Water Heater tank and a fan.

My question it´s still I have use an AirLoopHVAC, since the DX Coil has been connected to the WaterPumpWaterHeater!? Now I´m a little bit confused... Can you explain better this procedure...



Thanks for your support and atention!

Best Regards


--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "James V Dirkes II, PE" <jvd2pe@...> wrote:
>
> Fernando,
> 
>  
> 
> You have not connected the DX heating coil to any equipment or AirLoop.  The
> only heating coil you are using is the  Coil:Heating:Water object.  If you
> want to use the DX coil and a Heat Pump, you'll have to use a
> AirLoopHVAC:UnitaryHeatPump:WaterTo Air object.
> 
>  
> 
> This object assumes that you also use a DX coil for cooling, so you may have
> some difficulty.  I think that a chiller and a HeatPump don't normally get
> used at the same time.
> 
>  
> 
> BPT BizCard_RGB_0507
> 
>  
> 
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> 
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