.BuildingSystems.Fluid.HeatPumps.ModularReversible.TableData2D .BuildingSystems.Fluid.HeatPumps.ModularReversible.TableData2DHeat pump based on two-dimensional data from manufacturer data, (e.g. based on EN 14511), using the BuildingSystems.Fluid.HeatPumps.ModularReversible.Modular approach.
For more information on the approach, see BuildingSystems.Fluid.HeatPumps.ModularReversible.UsersGuide.
Internal inertias and heat losses are typically neglected, as these are implicitly obtained in measured data from manufacturers. Also, icing is disabled as the performance degradation is already contained in the data.
At the nominal conditions, the refrigerant cycle model will
calculate the unscaled nominal heat flow rate, which is
named QHeaNoSca_flow_nominal for heat pumps and
QCooNoSca_flow_nominal for chillers.
This value is probably
different from QHea_flow_nominal and
QCoo_flow_nominal which is for sizing.
For example, suppose you need a 7.6 kW heat pump,
but the datasheets only provides 5 kW and 10 kW options.
In such cases, the performance data and relevant parameters
are scaled using a scaling factor scaFac.
Resulting, the refrigerant machine can supply more or less heat with
the COP staying constant. However, one has to make sure
that the movers in use also scale with this factor.
Note that most parameters are scaled linearly. Only the
pressure differences are scaled quadratically due to
the linear scaling of the mass flow rates and the
basic assumption:
k = ṁ ⁄ √ Δp
Both QHeaNoSca_flow_nominal or QCooNoSca_flow_nominal
and scaFac
are calculated in the refrigerant cycle models.
Please read the documentation of the model for heating at BuildingSystems.Fluid.HeatPumps.ModularReversible.RefrigerantCycle.TableData2D.
For cooling, the assumptions are similar, and described at BuildingSystems.Fluid.Chillers.ModularReversible.RefrigerantCycle.TableData2D
EN 14511-2018: Air conditioners, liquid chilling packages and heat pumps for space heating and cooling and process chillers, with electrically driven compressors https://www.beuth.de/de/norm/din-en-14511-1/298537524