This article experimentally studies the thermal performance of latent heat storage in a two-phase thermosyphon solar water heater, which utilizes the superior heat transfer characteristics of boiling and condensation, and eliminates drawbacks found in the conventional solar water heater. Experimental investigations are first conducted to study the thermal behavior of tricosane (paraffin wax 116), water, and sodium acetate used as energy storage materials. The results indicate that tricosane provides many advantages to be the energy storage material in the latent heat storage system. This study also examines the functions of charge and discharge thermal behaviors in a two-phase thermosyphon solar water heater. The results show that the system gives optimum charge and discharge performance under 40% alcohol fill ratio and with tricosane used as the energy storage material, and displays an optimum charge efficiency of 73% and optimum discharge efficiency of 81%.
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February 2006
Research Papers
Latent Heat Storage in a Two-Phase Thermosyphon Solar Water Heater
Wen-Shing Lee,
Wen-Shing Lee
National Taipei University of Technology
, Department of Air-Conditioning and Refrigeration Engineering, 10673, Taipei, Taiwan, R.O.C.
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Bo-Ren Chen,
Bo-Ren Chen
National Taiwan University
, Department of Mechanical Engineering, 10673, Taipei, Taiwan, R.O.C.
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Sih-Li Chen
Sih-Li Chen
National Taiwan University
, Department of Mechanical Engineering, 10673, Taipei, Taiwan, R.O.C.
Search for other works by this author on:
Wen-Shing Lee
National Taipei University of Technology
, Department of Air-Conditioning and Refrigeration Engineering, 10673, Taipei, Taiwan, R.O.C.
Bo-Ren Chen
National Taiwan University
, Department of Mechanical Engineering, 10673, Taipei, Taiwan, R.O.C.
Sih-Li Chen
National Taiwan University
, Department of Mechanical Engineering, 10673, Taipei, Taiwan, R.O.C.J. Sol. Energy Eng. Feb 2006, 128(1): 69-76 (8 pages)
Published Online: January 25, 2005
Article history
Received:
April 28, 2004
Revised:
January 25, 2005
Citation
Lee, W., Chen, B., and Chen, S. (January 25, 2005). "Latent Heat Storage in a Two-Phase Thermosyphon Solar Water Heater." ASME. J. Sol. Energy Eng. February 2006; 128(1): 69–76. https://doi.org/10.1115/1.2147588
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