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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 https://hysopt.atlassian.net/wiki/spaces/HRM/pages/3089204173/Heat + pump.
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.
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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: https: //hysopt.atlassian.net/wiki/spaces/HRM/pages/3089204173/Heat + pump.
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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:
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In cooling mode, the default COP-table shows a COP of 5.229, which implies an EER of 4.29 at 10 °C evaporator temperature, 30 °C condenser temperature & full modulation. The power-table shows a power factor of 0.83. Using the formula above, the electric power needed is:
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