Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Heat Pump Cycles With Nonazeotropic Refrigerant Mixutres in Thermodynamic Diagrams

Published

Author(s)

R Radermacher

Abstract

Various thermodynamic diagrams that are well known in absorption heat pump design and distillation techniques are introduced in this paper for nonazeotropic halogenated hydrocarbon mixtures. As an example, a typical compressor heat pump cycle for refrigerant mixtures is displayed and the cycle itself discussed using these diagrams. It is shown that virtually all the necessary thermodynamic design information can be obtained form the enthalpy-composition diagram. It offers the possibility of determining the enthalpies, pressures, temperatures, and compositions involved by simple geometric constructions, even when the refrigerant flow rate varies in certain components. Furthermore, it is shown by an example that thermodynamic diagrams provide a basic understanding of the influence of refrigerant properties on the heat pump cycle.
Citation
ASHRAE Transactions
Volume
90
Issue
No. 2

Keywords

heat pumps, refrigerants, mixtures, enthalpy, pressure, temperature, thermodynamics, equations, thermodynamic properties

Citation

Radermacher, R. (1984), Heat Pump Cycles With Nonazeotropic Refrigerant Mixutres in Thermodynamic Diagrams, ASHRAE Transactions, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=910785 (Accessed February 27, 2024)
Created January 1, 1984, Updated February 19, 2017