recordHeatPumpBaseDataDefinition

Basic heat pump data

Extends from Modelica.Icons.Record (Icon for records), AixLib.Obsolete.BaseClasses.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions).

Information

Overview

Base data definition used in the heat pump model. It defines the table table_Qdot_Co which gives the condenser heat flow rate and table_Pel which gives the electric power consumption of the heat pump. Both tables define the power values depending on the evaporator inlet temperature (defined in first row) and the condenser outlet temperature (defined in first column) in W. The nominal mass flow rate in the condenser and evaporator are also defined as parameters.

Calculation of nominal mass flow rates

  • General calculation ṁ = Q̇nominal / cp / ΔT
Condenser mFlow_conNom
  • According to EN 14511 on water bound condenser side ΔT = 5 K
  • According to EN 255 (deprecated) on water bound condenser side ΔT = 10 K
Evaporator mFlow_evaNom:
  • According to EN 14511 on water/glycol bound evaporator side ΔT = 3 K
  • Possible calculation for air bound evaporator side ṁeva,nominal = (Q̇con,nominal - Ṗel,nominal) / cp / ΔT under the assumption (no literature source so far) of ΔT = 5 K

Parameters

TypeNameDefaultDescription
Real[:,:]tableQdot_conHeating power table; T in degC; Q_flow in W
Real[:,:]tableP_eleElectrical power table; T in degC; Q_flow in W
Modelica.Units.SI.MassFlowRatemFlow_conNomNominal mass flow rate in condenser
Modelica.Units.SI.MassFlowRatemFlow_evaNomNominal mass flow rate in evaporator
Real[:,2]tableUppBouPoints to define upper boundary for sink temperature

Revisions

  • MAy 7, 2020 by Philipp Mehrfeld:
    Add description of how to calculate m_flows
  • December 10, 2013 by Ole Odendahl:
    Formatted documentation appropriately