IIR document

A general model for two-stage vapor compression heat pump systems.

Author(s) : JIANG S., WANG S., JIN X., et al.

Type of article: Article, IJR article


Two-stage vapor compression technology has high potential of performance improvement for cold climate heat pumps, and there are several types of inter-stage configurations that need to be evaluated before making a choice. A general model of these configurations is first derived from a subcooler cycle and then is extended to be capable of evaluating many other inter-stage configurations by employing an “input domain”. The model is solved with a sequential algorithm and an analytical initial solution of the intermediate pressure is presented. After an experimentally validation with additional calculations of the subcooling parameter, the evaporating and condensing pressure, this general model is then used in the performance comparison and analysis of eight different inter-stage configurations. At last, case studies show that, this general model is capable of performing performance comparison among cycles with different types of inter-stage configurations, as well as refrigerant selection and operational analysis.

Available documents

Format PDF

Pages: 88-102


  • Public price

    20 €

  • Member price*


* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).


  • Original title: A general model for two-stage vapor compression heat pump systems.
  • Record ID : 30013503
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 51
  • Publication date: 2015/03


See other articles in this issue (17)
See the source