Part load efficiencies can be modelled and are set up much like in the boiler editor.
If you only know the SEER for the chiller then only one point at 100% load will need to be added but if you want to input the SEER at each load point then this is fine too.
The notional building will use an SSEER value of 3.6 in air-conditioning mode which already accounts for 20% distribution losses and fan energy associated with heat rejection. The equivalent SEER value is 4.5.
For mixed mode cooling the notional building will use an SSEER of 2.7 which includes indoor and outdoor units, fans, pumps, and losses, where cooling will be provided by a DX unit.
Exercise and Notes
Click on the chiller profile or the (...) button to open the editor.
In this example we will be modelling a chiller with an SEER of 4.5.