[EnergyPlus_Support] Re: COP of a chiller in operative conditions

[<fpasserini.tn@xxxxxxxxx>]

As EIR function of PLR now Iâ??m using the following one:



Curve:Quadratic,

    ideal EIRFPLR,           !- Name

    0,                       !- Coefficient1 Constant

    1,                       !- Coefficient2 x

    0,                       !- Coefficient3 x**2

    -100,                    !- Minimum Value of x

    100,                     !- Maximum Value of x

    ,                        !- Minimum Curve Output

    ,                        !- Maximum Curve Output

    Dimensionless,           !- Input Unit Type for X

    Dimensionless;           !- Output Unit Type



As you see in the following picutre, now there is a good agreement between

COPreference / EIRFT

and

Chiller COP  CHILLER [W/W]

Picture: <http://oi60.tinypic.com/2808v9v.jpg>http://oi60.tinypic.com/2808v9v.jpg

I read in the Input Output Reference that â??An ideal chiller with the same efficiency at all part-load ratioâ??s would use a performance curve that has a value of 0 when the part-load ratio equals 0â??.



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