modelTableData2DLoadDep_HeatRecovery

Information

This model validates Buildings.Fluid.Chillers.ModularReversible.TableData2DLoadDep against the polynomial chiller model Buildings.Fluid.Chillers.ElectricEIR for heat recovery chiller applications.

• The validation setup is duplicated from Buildings.Fluid.Chillers.Examples.ElectricEIR_AirCooled and the component ref reads the reference results obtained from that model.
• The chiller model is configured to interpolate capacity and power along the evaporator leaving temperature and the condenser entering temperature.
• The performance data are generated with the same polynomial equations as Buildings.Fluid.Chillers.ElectricEIR, using polynomial coefficients from the same data record as the one used in the reference example model, that is Buildings.Fluid.Chillers.Data.ElectricEIR.ElectricEIRChiller_York_YCAL0033EE_101kW_3_1COP_AirCooled.

Results analysis

There is good agreement with the reference results, except during the model time interval [7500, 8100] s, where the polynomial model computes lower power. During this period, the polynomial model calculates lower power due to the evaporator leaving temperature exceeding the maximum threshold upper limit per.TEvaLvgMax. While the data table model does not extrapolate beyond the temperature values provided in the performance data file, the reference model continues using polynomial evaluation of capacity and power outside of the validity range. Consequently, the polynomial model computes a higher capacity, resulting in a lower PLR and reduced power during this interval.

Parameters

Components

Revisions

• March 23, 2026, by Antoine Gautier:
  Refactored with two separate connectors for CHW and HW temperature setpoints.
  This is for #4507.
• March 21, 2025, by Antoine Gautier:
  First implementation.