modelPartialChillerWSEInterface

Partial model that defines the interface for chiller and WSE package

Extends from Buildings.Fluid.Interfaces.PartialFourPort (Partial model with four ports).

Information

This model implements an interface for chillers and integrated/nonitegrated water-side economizers.

Type	Name	Default	Description
Integer	num	2	Total number of chillers and waterside economizer
Assumptions
Boolean	allowFlowReversal1 (from PartialFourPort)	true	= false to simplify equations, assuming, but not enforcing, no flow reversal for medium 1
Boolean	allowFlowReversal2 (from PartialFourPort)	true	= false to simplify equations, assuming, but not enforcing, no flow reversal for medium 2
Chiller
Modelica.Units.SI.MassFlowRate	m1_flow_chi_nominal		Nominal mass flow rate on the medium 1 side in the chiller
Modelica.Units.SI.MassFlowRate	m2_flow_chi_nominal		Nominal mass flow rate on the medium 2 side in the chiller
Waterside economizer
Modelica.Units.SI.MassFlowRate	m1_flow_wse_nominal		Nominal mass flow rate on the medium 1 side in the waterside economizer
Modelica.Units.SI.MassFlowRate	m2_flow_wse_nominal		Nominal mass flow rate on the medium 2 side in the waterside economizer
Advanced
Medium1.MassFlowRate	m1_flow_small	1E-4*abs(m1_flow_chi_nominal)	Small mass flow rate for regularization of zero flow
Medium2.MassFlowRate	m2_flow_small	1E-4*abs(m2_flow_chi_nominal)	Small mass flow rate for regularization of zero flow
Advanced › Diagnostics
Boolean	show_T	false	= true, if actual temperature at port is computed

Type	Name	Description
Modelica.Fluid.Interfaces.FluidPort_a	port_a1 (from PartialFourPort)	Fluid connector a1 (positive design flow direction is from port_a1 to port_b1)
Modelica.Fluid.Interfaces.FluidPort_b	port_b1 (from PartialFourPort)	Fluid connector b1 (positive design flow direction is from port_a1 to port_b1)
Modelica.Fluid.Interfaces.FluidPort_a	port_a2 (from PartialFourPort)	Fluid connector a2 (positive design flow direction is from port_a2 to port_b2)
Modelica.Fluid.Interfaces.FluidPort_b	port_b2 (from PartialFourPort)	Fluid connector b2 (positive design flow direction is from port_a2 to port_b2)
Modelica.Blocks.Interfaces.RealInput	TSet	Set point for leaving water temperature
Modelica.Blocks.Interfaces.BooleanInput[num]	on	Set to true to enable equipment, or false to disable equipment

Type	Name	Default	Description
Medium1.MassFlowRate	m1_flow	port_a1.m_flow	Mass flow rate from port_a1 to port_b1 (m1_flow > 0 is design flow direction)
Modelica.Units.SI.PressureDifference	dp1	port_a1.p - port_b1.p	Pressure difference between port_a1 and port_b1
Medium2.MassFlowRate	m2_flow	port_a2.m_flow	Mass flow rate from port_a2 to port_b2 (m2_flow > 0 is design flow direction)
Modelica.Units.SI.PressureDifference	dp2	port_a2.p - port_b2.p	Pressure difference between port_a2 and port_b2
Medium1.ThermodynamicState	sta_a1	Medium1.setState_phX(port_a1.p, noEvent(actualStream(port_a1.h_outflow)), noEvent(actualStream(port_a1.Xi_outflow)))	Medium properties in port_a1
Medium1.ThermodynamicState	sta_b1	Medium1.setState_phX(port_b1.p, noEvent(actualStream(port_b1.h_outflow)), noEvent(actualStream(port_b1.Xi_outflow)))	Medium properties in port_b1
Medium2.ThermodynamicState	sta_a2	Medium2.setState_phX(port_a2.p, noEvent(actualStream(port_a2.h_outflow)), noEvent(actualStream(port_a2.Xi_outflow)))	Medium properties in port_a2
Medium2.ThermodynamicState	sta_b2	Medium2.setState_phX(port_b2.p, noEvent(actualStream(port_b2.h_outflow)), noEvent(actualStream(port_b2.Xi_outflow)))	Medium properties in port_b2