Re: [EnergyPlus_Support] Coil:Cooling:WaterToAirHeatPump:EquationFit: Buggy Warning Message?

[Linda Lawrie <linda@xxxxxxxxxxxxxx>]

Could also be a pasteo into the code warning
message.

Can you submit your question and input file to the helpdesk? 
energyplus-support@xxxxxxxx

At 11:23 AM 4/10/2010, energyplus99 wrote:
> I'm using: 
>
> Coil:Cooling:WaterToAirHeatPump:EquationFit and
> Coil:Heating:WaterToAirHeatPump:EquationFit 
>
> objects to model a heatpump using the curve-fitting methodology. 
>
> There are two parameters in
> Coil:Cooling:WaterToAirHeatPump:EquationFit:
> 1. Rated Total Cooling Capacity {W}
> 2. Rated Sensible Cooling Capacity {W} 
>
> Naturally, these two numbers will be different.  When I run my idf I
> get the following warning:
>
> "...heating capacity is disproportionate (> 20% different) to
> cooling capacity"
>
> It's apparent that it's comparing the Total cooling capacity to the
> Heating Capacity rather than comparing the Sensible Cooling Capacity to
> the Heating Capacity.
>
> Does anyone know if this is a bug (to be ignored) or whether I'm doing
> something wrong?
>
> My data is:
>
> Rated Total Cooling Capacity:    8324
> Rated Sensible Cooling Capacity: 5715
> Rated Heating
> Capacity:         
> 5686
>
> A related question is: are these rated numbers the capacity numbers that
> the manufacturer typically publishes (using industry standard conditions)
> or are they the maximum capacity numbers found in the manufacturer's
> data.  (The spreadsheet that generates the curve-fitting
> coefficients specifically uses the maximum numbers; the InputOutput doc
> for e+ is a little ambiguous as to what is required for these rated
> parameters in the EquationFit objects).
>
> I've been assuming the former.
>
>
>
>
>
>
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