REFRIGERATION:SYSTEM

Simulates the performance of a supermarket refrigeration system when used along with other objects to define the refrigeration load(s), the compressor(s), and the condenser.

Name

Type: alphanumeric

Refrigerated Case or Walkin or CaseAndWalkInList Name

Type: list of objects (REFRIGERATION:CASE, REFRIGERATION:AIRCHILLER, REFRIGERATION:WALKIN or REFRIGERATION:CASEANDWALKINLIST)
Enter the name of a Refrigeration:Case or Refrigeration:WalkIn object. If there is more than one refrigerated case or walk-in served by this system, enter the name of a Refrigeration:CaseAndWalkInList object. Only cases and walkins served directly by the system should be included in this list. Any cases served indirectly via a secondary chiller should NOT be included in this list

Refrigeration Transfer Load or TransferLoad List Name

Type: list of objects (REFRIGERATION:SECONDARYSYSTEM, REFRIGERATION:CONDENSER:CASCADE or REFRIGERATION:TRANSFERLOADLIST)
Enter the name of a Refrigeration:SecondarySystem object OR a Refrigeration:Condenser:Cascade object OR, a Refrigeration:TransferLoadList object. A transfer load is identified as one which moves the load from one system to another. So if you have more than one such load (including cascade condensers and secondary loops) served by the same system, use a TransferLoadList object.

Refrigeration Condenser Name

Type: list of objects (REFRIGERATION:CONDENSER:EVAPORATIVECOOLED, REFRIGERATION:CONDENSER:AIRCOOLED, REFRIGERATION:CONDENSER:CASCADE or REFRIGERATION:CONDENSER:WATERCOOLED)

Compressor or CompressorList Name

Type: list of objects (REFRIGERATION:COMPRESSOR or REFRIGERATION:COMPRESSORLIST)

Minimum Condensing Temperature

Type: real number
Related to the proper operation of the thermal expansion valves and compressors
Unit: C

Refrigeration System Working Fluid Type

Type: list of objects
Fluid property data for the refrigerant must be entered. The fluid property data, including the objects: FluidProperties:Name, FluidProperties:Temperatures, FluidProperties:Saturated and FluidProperties:Superheated can be copied from the FluidPropertiesRefData.idf dataset

Suction Temperature Control Type

Type: choice (FloatSuctionTemperature or ConstantSuctionTemperature)
Default: ConstantSuctionTemperature

Mechanical Subcooler Name

Type: list of objects ( or REFRIGERATION:SUBCOOLER)
Optional Field Recipient of refrigeration capacity, that is receives cool liquid from another refrigeration system to help meet aggregate case loads

Liquid Suction Heat Exchanger Subcooler Name

Type: list of objects ( or REFRIGERATION:SUBCOOLER)
Optional Field Liquid Suction Heat Exchanger Name, or leave blank

Sum UA Suction Piping

Type: real number
Use only if you want to include suction piping heat gain in refrigeration load
Unit: W/K
Default: 0.0

Suction Piping Zone Name

Type: list of objects ( or ZONE)
This will be used to determine the temperature used for distribution piping heat gain and the pipe heat gains as cooling credit for the zone. Required only if Sum UA Distribution Piping >0.0

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

Number of Compressor Stages

Type: choice (1 or 2)
Default: 1

Intercooler Type

Type: choice (None, Flash Intercooler or Shell-and-Coil Intercooler)
Default: None

Shell-and-Coil Intercooler Effectiveness

Type: real number
Default: 0.8

High-Stage Compressor or CompressorList Name

Type: list of objects (REFRIGERATION:COMPRESSOR or REFRIGERATION:COMPRESSORLIST)