The thermodynamic performance of an encapsulated ice thermal energy storage (ITES) system for cooling capacity is assessed using exergy and energy analyses. A full cycle, with charging, storing, and discharging stages, is considered. The results demonstrate how exergy analysis provides a more realistic and meaningful assessment than the more conventional energy analysis of the efficiency and performance of an ITES system. The overall energy and exergy efficiencies are 99.5 and 50.9 percent, respectively. The average exergy efficiencies for the charging, discharging, and storing periods are 86, 60, and over 99 percent, respectively, while the average energy efficiency for each of these periods exceeds 99 percent. These results indicate that energy analysis leads to misleadingly optimistic statements of ITES efficiency. The results should prove useful to engineers and designers seeking to improve and optimize ITES systems. [S0195-0738(00)00904-3]
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December 2000
Technical Papers
Thermodynamic Performance of Ice Thermal Energy Storage Systems
Marc A. Rosen,
Marc A. Rosen
Department of Mechanical Engineering, Ryerson Polytechnic University, Toronto, Ontario, Canada M5B 2K3
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Ibrahim Dincer,
Ibrahim Dincer
Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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Norman Pedinelli
Norman Pedinelli
Department of Mechanical Engineering, Ryerson Polytechnic University, Toronto, Ontario, Canada M5B 2K3
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Marc A. Rosen
Department of Mechanical Engineering, Ryerson Polytechnic University, Toronto, Ontario, Canada M5B 2K3
Ibrahim Dincer
Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Norman Pedinelli
Department of Mechanical Engineering, Ryerson Polytechnic University, Toronto, Ontario, Canada M5B 2K3
Contributed by the Advanced Energy Systems Division for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received by the AES Division, February 22, 1999; revised manuscript received September 6, 2000. Associate Technical Editor: A. Valero.
J. Energy Resour. Technol. Dec 2000, 122(4): 205-211 (7 pages)
Published Online: September 6, 2000
Article history
Received:
February 22, 1999
Revised:
September 6, 2000
Citation
Rosen, M. A., Dincer, I., and Pedinelli, N. (September 6, 2000). "Thermodynamic Performance of Ice Thermal Energy Storage Systems ." ASME. J. Energy Resour. Technol. December 2000; 122(4): 205–211. https://doi.org/10.1115/1.1325406
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