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Some heat engine cycles in which liquids can work.

P C Allen1, D N Paulson, J C Wheatley

  • 1Department of Physics, University of California, San Diego, La Jolla, California 92093.

Proceedings of the National Academy of Sciences of the United States of America
|January 1, 1981
PubMed
Summary

This study explores liquid-based heat engine cycles with regeneration, including Stirling, Malone, Stirling-Malone, and Brayton cycles. Quantitative measurements confirm the principles of regeneration and the second thermodynamic medium using propylene.

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Area of Science:

  • Thermodynamics
  • Heat Transfer
  • Mechanical Engineering

Background:

  • Regenerative heat engine cycles offer enhanced efficiency.
  • The use of liquids as working fluids in these cycles is less explored.
  • Understanding the role of a second thermodynamic medium is crucial for cycle optimization.

Purpose of the Study:

  • To investigate the application of liquids in regenerative heat engine cycles.
  • To analyze four specific cycles: Stirling, Malone, Stirling-Malone, and Brayton.
  • To experimentally validate thermodynamic principles with quantitative measurements.

Main Methods:

  • Theoretical analysis of four regenerative heat engine cycles.
  • Investigation of the role of a second thermodynamic medium.

Related Experiment Videos

  • Experimental verification using propylene in a Stirling-Malone cycle.

    • Main Results:

    • Liquids are viable working fluids for regenerative heat engine cycles.
    • The Stirling-Malone cycle demonstrated effective regeneration with a liquid.
    • Quantitative measurements validated the theoretical principles.

    Conclusions:

    • Regenerative heat engine cycles can effectively utilize liquid working fluids.
    • The Stirling-Malone cycle is a promising configuration for liquid-based regeneration.
    • Experimental data supports the theoretical framework for these cycles.