...
Electric demand: In this mode, the Optimiser will determine the size of the reversible heat pump based on the minimal electric power that is needed to supply to the compressor to meet the thermal installed capacity requirements for both the heating & cooling conditionssatisfy both heating and cooling conditions. Based on the design heating and cooling flows, the required compressor power for each situation is calculated using the COP & Power tables. The situation that requires the highest compressor power is used to size the reversible heat pump.
Heating demand: In this mode, the Optimiser will determine the size of the reversible heat pump to meet the thermal installed capacity requirement for the heating condition.
...
Heat pump: Representing the parameters of the actual heat pump itself. The heat pump component has nine parameters. For an in-depth description of those parameters, see Heat pump https://hysopt.atlassian.net/wiki/spaces/HRM/pages/3089204173.
KV value indoor coil: A parameter for the pressure drop at the indoor coil (the condenser in heating mode) of the reversible heat pump. The KV value expresses the amount of flow that is needed for a pressure drop of 1 bar. This must be manually filled in by the user, as its value will affect the pressure drop propagated upstream during the ‘optimise components’ step. By default, this value is set at 100.
...
To illustrate the previously found result, we quickly elaborate on the calculation of the minimal needed electric power for the heat pump. To this end, we use the (default) COP-table & power table that the reversible heat pump is currently using. For more info on the usage of the tables can be found here: Heat pump: https://hysopt.atlassian.net/wiki/spaces/HRM/pages/3089204173.
...
In heating mode, the default COP-table shows a COP of 1.62 at -10 °C evaporator temperature, 80 °C condenser temperature & full modulation. The power-table shows a power factor of 0.823438. Using the formula above, the electric power needed is:
...