Sensitivity Analysis of Absorption Cycle Fluid Thermodynamic Properties

[+] Author and Article Information
S. C. Palmer

Mechanical Engineering Department, United States Naval Academy, Annapolis, MD 21402-5042

S. V. Shelton

G. W. W. School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Energy Resour. Technol 121(2), 137-141 (Jun 01, 1999) (5 pages) doi:10.1115/1.2795069 History: Received October 23, 1998; Revised February 13, 1999; Online November 06, 2007


Absorption heat pump technology may be improved by new cycle configurations by new working fluids. In this study, the effect of hypothetical working fluids on performance improvement is explored. The performance of two cycles is studied using three fluid property sources for ammonia/water, i.e., curve-fit experimental data, an ideal solution model, and the Peng-Robinson equation of state model. The models require only minimal fundamental thermodynamic property data for the two pure components. This allows investigation into the influence of each fundamental property on cycle performance, providing insight into desirable properties for new absorption fluid pairs. Variations of fundamental fluid properties are used as input to the models, showing that the volatilities of the refrigerant and absorbent have the greatest effect on cycle performance.

Copyright © 1999 by The American Society of Mechanical Engineers
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