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A Novel Combined Power and Cooling Thermodynamic Cycle for Low Temperature Heat Sources: Part II — Experimental Investigation

[+] Author Affiliations
Gunmar Tamm, D. Yogi Goswami

University of Florida, Gainesville, FL

Paper No. SED2002-1034, pp. 39-46; 8 pages
  • ASME Solar 2002: International Solar Energy Conference
  • Solar Energy
  • Reno, Nevada, USA, June 15–20, 2002
  • Conference Sponsors: Solar Energy Division
  • ISBN: 0-7918-1689-3
  • Copyright © 2002 by ASME


A combined thermal power and cooling cycle proposed by Goswami is under intensive investigation, both theoretically and experimentally. The proposed cycle combines the Rankine and absorption refrigeration cycles, producing refrigeration while power is the primary goal. A binary ammonia-water mixture is used as the working fluid. This cycle can be used as a bottoming cycle using waste heat from a conventional power cycle or an independent cycle using low temperature sources such as geothermal and solar energy. An experimental system was constructed to demonstrate the feasibility of the cycle and to compare the experimental results with the theoretical simulation. Results showed that the vapor generation and absorption condensation processes work experimentally, exhibiting expected trends, but with deviations from ideal and equilibrium modeling. The potential for combined turbine work and refrigeration output was evidenced in operating the system. Analysis of losses showed where improvements could be made, in preparation for further testing over a broader range of operating parameters.

Copyright © 2002 by ASME



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