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[EnergyPlus_Support] Re: Modeling a Packaged Rooftop Heat Pump according to Appendix G
Probably I'll impose the condition concerning the temperature for the activation of the auxiliary heat through the field "Maximum Outdoor Dry-Bulb Temperature for Defrost Operation" of the object Coil:Heating:DX:SingleSpeed
Do you think that it could be a good solution?
The biggest problem in the interpretation of G3.1.3.1 is that I don't understand what "multistage space thermostats" mean.
Best Regards
--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "Fabiano Domingues Ferreira" <fabiano.ferreira@...> wrote:
>
> Hi,
>
>
>
> I'm modeling a project on the DesignBuilder according to the Appendix G of ASHRAE 90.1-2007 Standard.
>
> According to the Standard the system that I need to model is a Packaged Rooftop Heat Pump. I have a problem to comply with the item G3.1.3.1 Heat Pump, follow bellow.
>
>
>
> "G3.1.3.1 Heat Pump. Electric air-source heat pump shall be modeled with electric auxiliary heat. The system shall be controlled with multistage space thermostats and an outdoor air thermostat wired to energize auxiliary heat only on the last thermostat stage and when outdoor air temperature is less than 4°C."
>
>
>
> I have already modeled the auxiliary heat, I just don't know how to set the thermostats. Could you tell me how can I set those thermostats on the system?
>
>
>
> Regards,
>
> Fabiano Ferreira
>
>
>
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