A Single-Stage Ammonia/Water Absorption Cycle With Integrated Heat Exchange Components

[+] Author and Article Information
A. M. Johnston, C. H. O’Sullivan

Department of Mechanical Engineering, University of Sydney, N.S.W. 2006, Australia

J. Sol. Energy Eng 103(1), 42-46 (Feb 01, 1981) (5 pages) doi:10.1115/1.3266205 History: Received March 10, 1980; Revised September 30, 1980; Online November 11, 2009


Thermodynamic analysis of the single-stage ammonia/water cycle indicates the importance of close temperature approach in the counter-current heat exchanges of the cycle and of recovering useful heat from the vapor rectification process. A novel style of heat exchange equipment, constructed in a laboratory by photo-etching flow passages into stainless steel plates which are then diffusion-bonded together, is capable of both of these services. In air-conditioning applications, coefficients of performance of 0.75 to 0.85 (for sink temperatures of 50°C to 30°C) appear to be achievable.

Copyright © 1981 by ASME
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