Evaporator and condenser models¶

class PythonModel.heatexchangers.EvaporatorCondenser(parameters)¶

Bases: object

Object for heat exchanger based on epsilon-NTU method for a heat transfer fluid exchanging heat with refrigerant experiencing constant temperature phase change.

Parameters:	UA – Heat transfer coefficient of the evaporator or condenser (W/K).

get_RefrigerantTemperature(Q_flow, m_flow, flu, T_in)¶

Evaluate the refrigerant temperature.

Parameters:	Q_flow – Heat transfer rate to the fluid stream (W). m_flow – Fluid mass flow rate (kg/s). flu – Fluid model. T_in – Inlet fluid temperature (K).
Returns:	Refrigerant temperature (K).

Usage: Type

>>> import fluids
>>> flu = fluids.ConstantPropertyWater()
>>> eva = EvaporatorCondenser([21523])
>>> '%.2f' % eva.get_RefrigerantTemperature(19300, 0.71, flu, 298.75)
'305.25'

initialGuessParameters(Q_nominal, P_nominal)¶

Initialize guess parameters for calibration of the heat pump model.

Parameters:	Q_nominal – Nominal heat pump capacity (W). P_nominal – Nominal power input (W).
Returns:	A list of parameters to the compressor model, a list of tuples of the bounds of the parameters (min, max) for the calibration routine.

modelicaModelPath()¶

Returns the full path to the EvaporatorCondenser model in the

IBPSA library.

Returns:	Full path to the compressor model in the IBPSA library.

Usage: Type

>>> eva = EvaporatorCondenser([21523])
>>> eva.modelicaModelPath()
'IBPSA.Fluid.HeatExchangers.EvaporatorCondenser'

printParameters()¶

Prints the value of the model parameters.

reinitializeParameters(parameters)¶

Reinitializes the evaporator or condenser using new parameters.

Parameters:	UA – Heat transfer coefficient (W/K).

set_ModelicaParameters(simulator, suffix='')¶

Set parameter values for simulation in dymola.

Parameters:	simulator – Simulator object (BuildinsPy) suffix – String to add at the end of parameter names.
Returns:	Simulator object (BuildinsPy)