.AixLib.Fluid.HeatPumps.ModularReversible.Data.TableData2D.Generic

Information

Overview

Base data definition used in the heat pump model. It defines the table for tab_PEle which gives the electric power consumption of the heat pump or chiller. Information on heat flow rates are in the corresponding records for heat pumps and chillers, as it is the condenser and evaporator heat flow rate, respectively.

Both tables define the power values depending on the ambient side temperature (defined in first row, in K) and the useful side temperature (defined in first column, in K) in W.

Depending on the type of the device, either inlet or outlet conditions are used. This feature could be required for air-air devices. Here, the room temperature (inlet) and outdoor air temperature (inlet) are used. For air-to-water devices, the outdoor air temperature (inlet) and the supply water temperature (outlet) are used instead. When adding new data, be sure to check if the datasheet uses inlet or outlet conditions. Also, be sure to check if the data is for wet- or dry-bulb temperatures. The measured temperatures of the modular approach are taken directly from the fluid ports and are, thus, always dry bulb.

The nominal mass flow rates in the condenser and evaporator are also defined as parameters. If nominal pressure curves are provided in the datasheets, be sure to match the two parameters. Aside from that, the nominal mass flow rates are compared to the values specified by the user. If the deviation is too great, a warning indicates a possible mismatch of system mass flow rate and table data.

The string devIde ensures that if data for heating and cooling are required, matching records will be used. This parameter is mainly to avoid manual input errors.

Where to get the data?

Manufacturers often provide table data for heating or cooling capacity and electrical power consumption, e.g. based on EN 14511. While the usual datasheets only contain some nominal points, the documents for installers and planners are often more specific. Keywords for a search should be technical guide, planning handbook, or similar, together with the manufacturer and possibly the device id.

References

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

Revisions

• October 2, 2022 by Fabian Wuellhorst:
  Adjusted based on IPBSA guidelines #1576)
• May 7, 2020 by Philipp Mehrfeld:
  Add description of how to calculate m_flows
• December 10, 2013 by Ole Odendahl:
  Formatted documentation appropriately