NIST Vapor Compression Cycle Design Program : CYCLE_D - SRD 49

CYCLE_D simulates vapor compression refrigeration cycles that use single-compound refrigerants or refrigerant blends. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat exchanger. In addition, the model can simulate a subcritical two-stage economizer cycle, a subcritical three-stage economizer cycle, and a subcritical two-stage compression cycle with intercooling. CYCLE_D includes 75 single-compound refrigerants and 113 predefined blends. Single-compound fluids can be combined to form blends of up to ten components. Computationally, the program is fully compatible with the NIST Reference Fluid Thermodynamic and Transport Properties - REFPROP, Version 10.0.

Data and Resources

Field Value
accessLevel public
bureauCode {006:55}
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identifier ECBCC1C130292ED9E04306570681B10747
issued 2019-08-12
landingPage https://www.nist.gov/srd/nist-standard-reference-database-49
language {en}
license https://www.nist.gov/open/license
modified 2018-09-01 00:00:00
programCode {006:052}
publisher National Institute of Standards and Technology
references {https://www.nist.gov/srd/nist-standard-reference-database-49}
resource-type Dataset
source_datajson_identifier true
source_hash 5023ec07fc710fde6a0b008bcce1d30410472896
source_schema_version 1.1
theme {"Buildings and Construction:Air conditioning and heating equipment","Standards:Reference materials"}
Groups
  • AmeriGEOSS
  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • air-conditioning
  • alternative-refrigerants
  • cfcs
  • chemical-engineering
  • chlorofluorocarbons
  • compressors
  • cooling-equipment
  • equations-of-state
  • fluids
  • hcfcs
  • hfcs
  • hydrocarbons
  • hydrochlorofluorocarbons
  • mixtures
  • ozone-depletion
  • refrigerants
  • refrigeration
  • thermodynamic-properties
  • thermodynamics
  • vapor-compression-cycles
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Piotr A. Domanski
maintainer_email piotr.domanski@nist.gov
metadata_created 2025-09-24T10:37:41.341148
metadata_modified 2025-09-24T10:37:41.341157
notes CYCLE_D simulates vapor compression refrigeration cycles that use single-compound refrigerants or refrigerant blends. The model can simulate a basic subcritical or transcritical refrigeration cycle, both with or without a liquid-line/suction-line heat exchanger. In addition, the model can simulate a subcritical two-stage economizer cycle, a subcritical three-stage economizer cycle, and a subcritical two-stage compression cycle with intercooling. CYCLE_D includes 75 single-compound refrigerants and 113 predefined blends. Single-compound fluids can be combined to form blends of up to ten components. Computationally, the program is fully compatible with the NIST Reference Fluid Thermodynamic and Transport Properties - REFPROP, Version 10.0.
num_resources 1
num_tags 28
title NIST Vapor Compression Cycle Design Program : CYCLE_D - SRD 49