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Experimental Study on a Solar Water Heater Using Supercritical Carbon Dioxide as Working Fluid

[+] Author Affiliations
H. Yamaguchi

Doshisha University, Kyoto, Japan

X. R. Zhang

Peking University, Beijing, China

N. Sawada, H. Suzuki, H. Ueda

Showa Tansan Co., Ltd., Kawasaki, Kanagawa, Japan

Paper No. ES2009-90059, pp. 753-759; 7 pages
doi:10.1115/ES2009-90059
From:
  • ASME 2009 3rd International Conference on Energy Sustainability collocated with the Heat Transfer and InterPACK09 Conferences
  • ASME 2009 3rd International Conference on Energy Sustainability, Volume 2
  • San Francisco, California, USA, July 19–23, 2009
  • Conference Sponsors: Advanced Energy Systems Division and Solar Energy Division
  • ISBN: 978-0-7918-4890-6 | eISBN: 978-0-7918-3851-8
  • Copyright © 2009 by ASME

abstract

In this paper, a solar water heater using supercritical carbon dioxide as working fluid is experimentally studied. The sloar water heater is based on a natural convective supercritical CO2 flow. In the present study, an experimental set-up is designed and tested in order to obtain a basic knowledge on this solar water heater. The obtained results show that the natural convective flow is well induced even in winter, the lowest level of solar radiation condition. Furthermore, collector efficiency is measured at above 86.0%. More theoretical investigations are needed to be carried out to make clear about its mechanism etc.

Copyright © 2009 by ASME

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