Daikin EWLDС13I-SS [19/36] How to use the correction factors proposed in the previous tables

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Table 4 - Correction factors for low evaporator leaving water temperature

2 0 -2 -4 -6 -8

0.842 0.785 0.725 0.670 0.613 0.562

0.950 0.940 0.920 0.890 0.870 0.840

Note: Correction factors have to be applied at working conditions: evaporator leaving water temperature 7°C

Table 5 - Correction factors for water and glycol mixture

0.993 0.983 0.969 0.948 0.929

1.017 1.032 1.056 1.092 1.139

1.120 1.272 1.496 1.792 2.128

Compressor Power Input

Compressor Power Input

Mixture: Water

- Evaporator pressure drop: 36kPa

Mixture: Water + Ethylene Glycol 30% (for a winter air temperature up to -15°C)

- multiply the Cooling Capacity, the Compressor Power Input by the Correction factor of Table 4 and Table 5

- starting from this new value of Cooling Capacity, calculate the Flow Rate (l/s) and the Evaporatore Pressure Drop (kPa)

- now multiply the new Flow Rate and the new Evaporator Pressure Drop by the Correction Factors of Table 5

Mixture: Water

- Evaporator pressure drop: 18 kPa (referred to 10.57 l/s) x 1.181 = 21 kPa