Since you mention Leaving water temperature, I assume you are using Chiller:Electric:ReformulatedEIR. There are 3 curves, `Cooling Capacity Function of Temperature Curve Name`

and `Electric Input to Cooling Output Ratio Function of Temperature Curve Name`

are both a function of leaving chilled and condenser fluid temperatures. Your 2nd table shows this data. The final curve is `Electric Input to Cooling Output Ratio Function of Part Load Ratio Curve Name`

which is a function of part-load ratio. I think you meant to create this curve using your first table. However, I see what looks like a flow rate instead of part-load ratio which would be numbers between 0 and 1. You should also plot your curves using a spreadsheet. For example plot Cooling Capacity Function of Temperature Curve result versus leaving condenser water temperature for discrete leaving chilled water temperatures (plot data only for 7C, then other data for 9 C, etc.). This way you can see how the curve behaves at different temperatures. Also do this for the Electric Input to Cooling Output Ratio Function of Temperature Curve.

I plotted your EIRfPLR curve and it doesn't look right. This curve should go to 0 as PLR goes to 0. This means you are getting full power at low part-load conditions and would explain the low COP numbers. The EIRFPLR curve is really a power ratio curve. Compare the power ratio at each PLR or if power is 28.97 kW at PLR = 0.2 and power is 153.8 kW at PLR = 1 then at PLR = 0.2 the power ratio is

Power ratio = 28.97 kw / 153.8 kW = 0.18836.

Creating regression coefficient in Excel is easy once you know how to do it. The document I provided shows exactly how to do that and I'm sure you can find lots of information on the web.

Your curve coefficients:

```
Curve:Quadratic,
ChlrAirScrollEIRRatio_fQRatio, !- Name
1.0069198702, !- Coefficient1 Constant
-0.3099076705, !- Coefficient2 x
0.3029878003, !- Coefficient3 x**2
```

My curve coefficients:

```
Curve:Quadratic,
ChlrAirScrollEIRRatio_fQRatio, !- Name
0.053494024, !- Coefficient1 Constant
0.672923035, !- Coefficient2 x
0.266558864, !- Coefficient3 x**2
```

Here is the power equation directly from the code.

```
Power = (AvailChillerCap / ReferenceCOP) * ChillerEIRFPLR * ChillerEIRFT * FRAC;
```

where:

AvailChillerCap is the full load output at current operating condition of Tevapin and Tout

ReferenceCOP is the rated COP

ChillerEIRfPLR is the curve discussed here

ChillerEIRFT is the EIR as a function of temperatures

and FRAC is when the chiller cycles below min PLR, above min PLR then FRAC = 1