CHILLER:ELECTRIC

This chiller model is the empirical model from the Building Loads and System Thermodynamics (BLAST) program. Chiller performance curves are generated by fitting catalog data to third order polynomial equations. Three sets of coefficients are required.

Name

Condenser Type
Type: choice (AirCooled, WaterCooled or EvaporativelyCooled)
Default: AirCooled

Nominal Capacity
Unit: W
Minimum: 0.0

Nominal COP
Unit: W/W

Chilled Water Inlet Node Name
Type: node

Chilled Water Outlet Node Name
Type: node

Condenser Inlet Node Name
Type: node

Condenser Outlet Node Name
Type: node

Minimum Part Load Ratio
Minimum: 0.0

Maximum Part Load Ratio
Minimum: 0.0

Optimum Part Load Ratio
Minimum: 0.0

Design Condenser Inlet Temperature
Unit: C

Temperature Rise Coefficient

Design Chilled Water Outlet Temperature
Unit: C

Design Chilled Water Flow Rate
For variable volume this is the maximum flow & for constant flow this is the flow.
Unit: m3/s
Minimum: 0.0

Design Condenser Fluid Flow Rate
This field is only used for Condenser Type = AirCooled or EvaporativelyCooled when Heat Recovery is specified
Unit: m3/s
Minimum: 0.0

Coefficient 1 of Capacity Ratio Curve

Coefficient 2 of Capacity Ratio Curve

Coefficient 3 of Capacity Ratio Curve

Coefficient 1 of Power Ratio Curve

Coefficient 2 of Power Ratio Curve

Coefficient 3 of Power Ratio Curve

Coefficient 1 of Full Load Ratio Curve

Coefficient 2 of Full Load Ratio Curve

Coefficient 3 of Full Load Ratio Curve

Chilled Water Outlet Temperature Lower Limit
Unit: C

Chiller Flow Mode
Type: choice (ConstantFlow, LeavingSetpointModulated or NotModulated)
Select operating mode for fluid flow through the chiller. "NotModulated" is for either variable or constant pumping with flow controlled by the external plant system. "ConstantFlow" is for constant pumping with flow controlled by chiller to operate at full design flow rate. "LeavingSetpointModulated" is for variable pumping with flow controlled by chiller to vary flow to target a leaving temperature setpoint.
Default: NotModulated

Design Heat Recovery Water Flow Rate
If non-zero, then the heat recovery inlet and outlet node names must be entered. Heat recovery is only available with Condenser Type = WaterCooled.
Unit: m3/s
Minimum: 0.0
Default: 0.0

Heat Recovery Inlet Node Name
Type: node

Heat Recovery Outlet Node Name
Type: node

Sizing Factor
Type: real number
Multiplies the autosized capacity and flow rates
Default: 1.0

Basin Heater Capacity
Type: real number
This field is only used for Condenser Type = EvaporativelyCooled and for periods when the basin heater is available (field Basin Heater Operating Schedule Name). For this situation, the heater maintains the basin water temperature at the basin heater setpoint temperature when the outdoor air temperature falls below the setpoint temperature. The basin heater only operates when the chiller is not operating.
Unit: W/K
Minimum: 0.0
Default: 0.0

Basin Heater Setpoint Temperature
Type: real number
This field is only used for Condenser Type = EvaporativelyCooled. Enter the outdoor dry-bulb temperature when the basin heater turns on.
Unit: C
Minimum: 2.0
Default: 2.0

Basin Heater Operating Schedule Name
Type: list of objects (SCHEDULE:COMPACT, SCHEDULE:FILE, SCHEDULE:CONSTANT, EXTERNALINTERFACE:SCHEDULE, EXTERNALINTERFACE:FUNCTIONALMOCKUPUNITIMPORT:TO:SCHEDULE or SCHEDULE:YEAR)
This field is only used for Condenser Type = EvaporativelyCooled. Schedule values greater than 0 allow the basin heater to operate whenever the outdoor air dry-bulb temperature is below the basin heater setpoint temperature. If a schedule name is not entered, the basin heater is allowed to operate throughout the entire simulation.

Condenser Heat Recovery Relative Capacity Fraction
Type: real number
This optional field is the fraction of total rejected heat that can be recovered at full load
Minimum: 0.0
Maximum: 1.0

Heat Recovery Inlet High Temperature Limit Schedule Name
Type: list of objects (SCHEDULE:COMPACT, SCHEDULE:FILE, SCHEDULE:CONSTANT, EXTERNALINTERFACE:SCHEDULE, EXTERNALINTERFACE:FUNCTIONALMOCKUPUNITIMPORT:TO:SCHEDULE or SCHEDULE:YEAR)
This optional schedule of temperatures will turn off heat recovery if inlet exceeds the value

Heat Recovery Leaving Temperature Setpoint Node Name
Type: node
This optional field provides control over the heat recovery Using this triggers a model more suited to series bundle and chillers with higher temperature heat recovery If this field is not used, the bundles are modeled as being in parallel

End-Use Subcategory
Type: alphanumeric
Any text may be used here to categorize the end-uses in the ABUPS End Uses by Subcategory table.
Default: General