Res: [EnergyPlus_Support] Absorption Chiller data for EnergyPlus

Thank you Kasirajan and thank you Richard,

I understand now but I have only one more question ...

When I obtain the Part Load Efficiency Curves (performance curves) for my absorption chiller from manufacturers, I have the values of COP =f(PLR).

However, E+ consider the Generator Heat Input Part Load Ratio Curves which relates values of SteamInputRatio = f(PLR) according to page 537 of I/O Reference.

So in order to fit the curve using Biquadratic Curve Fit I have to have values of SteamInputRatio which I/O Ref defines as "the Ratio of the Generator load on the absorber to the demand on the chiller".

How can I obtain these values using Part Load Efficiency Curves from manufacturers?

Maybe, SteamInputRatio is related with COP, and I've imagined that SteamInputRatio is =(COP)^-1, but the value of optimum PLR (which corresponds to maximum COP) doesn't match with minimum SteamInputRatio of the Example file Absorption chiller performance curve.

Do you have an idea about this?

If I can relate SteamInputRatio with COP I could obtain the curve and coefficients asked by E+.

thanks in advance.

Paulo Ara.

De: Kasirajan <kasidude@xxxxxxxxxxx>
Para: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Cc: "EnergyPlus_Support@xxxxxxxxxxxxxxx" <EnergyPlus_Support@xxxxxxxxxxxxxxx>
Enviadas: Quinta-feira, 28 de Janeiro de 2010 12:18:53
Assunto: Re: [EnergyPlus_Support] Absorption Chiller data for EnergyPlus

Hi Paula,

I you can request for the NPLV OR IPLV which is the part load performance. This generally provided by the supplier.

Kasirajan. K

Sent from my iPhone

On 28-Jan-2010, at 21:21, Paulo Jose Schiavon Ara <paulo_ara@yahoo. com.br> wrote:

Hello,

I'm trying to define the absorption chiller for my simulation other them the absorption chiller presented in the example file.

When looking for the chiller parameters among the absorption chillers catalogs, I'm not finding the parameters needed for EnergyPlus simulation such as Part Load Ratio (Minimum, Maximum and Optimum), Generator Steam Input Curve, etc.

I would like to know if is it possible to find this data in other sources or if is there a way to estimate these parameters by myself based on the data about COP, temperatures and flow rate which I can obtain from catalogs.

Thank you very much,

Paulo Ara.

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