This research effort involved experimentally testing an advanced-cycle, ammonia-water absorption chiller with a cooling capacity of 17.6 kW (5 refrigeration tons (RT)). The system was a generator-absorber heat exchange (GAX) cycle and was sized for residential and light commercial use, where very little absorption equipment is currently used. The components of the cycle were assembled with instrumentation, including flow meters, pressure transducers, and thermocouples. The findings of the research were cycle cooling load and coefficient of performance (COP), as well as many component heat duties and working fluid state points throughout the cycle. The COP of the chiller at essentially full load was measured at 0.68. A simulation of the GAX cycle was performed with a computer program that predicted the heat duties of each component and the cooling load of the cycle. The simulation of the GAX cycle and experimental testing compared closely. Existing market research shows that significant business opportunities exist for a GAX heat pump or chiller with a cooling COP of 0.70 or greater. The work performed in this study consisted of testing a GAX cycle with a COP that approached the target value of 0.70 and identified improvements that must be made to reach the target COP value.
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e-mail: dkpried@earthlink.net
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September 2001
Technical Papers
Performance of a Residential-Sized GAX Absorption Chiller
Douglas K. Priedeman, Mem. ASME,
e-mail: dkpried@earthlink.net
Douglas K. Priedeman, Mem. ASME
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
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Michael A. Garrabrant,
Michael A. Garrabrant
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
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James A. Mathias,
James A. Mathias
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
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Roger E. Stout,
Roger E. Stout
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
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Richard N. Christensen
Richard N. Christensen
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
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Douglas K. Priedeman, Mem. ASME
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
e-mail: dkpried@earthlink.net
Michael A. Garrabrant
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
James A. Mathias
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
Roger E. Stout
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
Richard N. Christensen
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210
Contributed by the Advanced Energy SystemsDivision for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received by the AES Division, February 15, 2000; revised manuscript received March 14, 2001. Associate Editor: F. Chen.
J. Energy Resour. Technol. Sep 2001, 123(3): 236-241 (6 pages)
Published Online: March 14, 2001
Article history
Received:
February 15, 2000
Revised:
March 14, 2001
Citation
Priedeman, D. K., Garrabrant , M. A., Mathias , J. A., Stout , R. E., and Christensen, R. N. (March 14, 2001). "Performance of a Residential-Sized GAX Absorption Chiller ." ASME. J. Energy Resour. Technol. September 2001; 123(3): 236–241. https://doi.org/10.1115/1.1385519
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