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Experimental studies of a new solar water heater system using a solar water pump

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  • Roonprasang, Natthaphon
  • Namprakai, Pichai
  • Pratinthong, Naris

Abstract

The research goal was to develop a new solar water heater system (SWHS) that used a solar water pump instead of an electric pump. The pump was powered by the steam produced from a flat plate collector. Therefore, heat could be transferred downward from the collector to a hot water storage tank. The designed system consisted of four panels of flat plate solar collectors, an overhead tank installed at an upper level and a large water storage tank with a heat exchanger at a lower level. Discharge heads of 1, 1.5 and 2m were tested. The pump could operate at the collector temperature of about 70–90°C and vapor gage pressure of 7–14kPa. It was found that water circulation within the SWHS ranged between 12 and 59l/d depending on the incident solar intensity and system discharge head. The average daily pump efficiency was about 0.0014–0.0019%. Moreover, the SWHS could have a daily thermal efficiency of about 7–13%, whereas a conventional system had 30–60% efficiency. The present system was economically comparable to a conventional one.

Suggested Citation

  • Roonprasang, Natthaphon & Namprakai, Pichai & Pratinthong, Naris, 2008. "Experimental studies of a new solar water heater system using a solar water pump," Energy, Elsevier, vol. 33(4), pages 639-646.
    • Handle: RePEc:eee:energy:v:33:y:2008:i:4:p:639-646
    DOI: 10.1016/j.energy.2007.12.002
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    References listed on IDEAS

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    1. Wong, Y. W. & Sumathy, K., 1999. "Solar thermal water pumping systems: a review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 3(2-3), pages 185-217, June.
    2. Wong, Y.W & Sumathy, K, 2001. "Performance of a solar water pump with ethyl ether as working fluid," Renewable Energy, Elsevier, vol. 22(1), pages 389-394.
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    1. Khargotra, Rohit & Kumar, Raj & András, Kovács & Fekete, Gusztáv & Singh, Tej, 2022. "Thermo-hydraulic characterization and design optimization of delta-shaped obstacles in solar water heating system using CRITIC-COPRAS approach," Energy, Elsevier, vol. 261(PB).
    2. Jiang, X.S. & Jing, Z.X. & Li, Y.Z. & Wu, Q.H. & Tang, W.H., 2014. "Modelling and operation optimization of an integrated energy based direct district water-heating system," Energy, Elsevier, vol. 64(C), pages 375-388.
    3. Wenxin Shen & Wenzhe Tang & Atthaset Siripanan & Zhen Lei & Colin F. Duffield & Felix Kin Peng Hui, 2018. "Understanding the Green Technical Capabilities and Barriers to Green Buildings in Developing Countries: A Case Study of Thailand," Sustainability, MDPI, vol. 10(10), pages 1-17, October.
    4. Sichilalu, Sam & Mathaba, Tebello & Xia, Xiaohua, 2017. "Optimal control of a wind–PV-hybrid powered heat pump water heater," Applied Energy, Elsevier, vol. 185(P2), pages 1173-1184.
    5. Li, Danny H.W. & Yang, Liu & Lam, Joseph C., 2013. "Zero energy buildings and sustainable development implications – A review," Energy, Elsevier, vol. 54(C), pages 1-10.
    6. Jaisankar, S. & Radhakrishnan, T.K. & Sheeba, K.N., 2009. "Studies on heat transfer and friction factor characteristics of thermosyphon solar water heating system with helical twisted tapes," Energy, Elsevier, vol. 34(9), pages 1054-1064.
    7. Sutthivirode, Kittiwoot & Namprakai, Pichai & Roonprasang, Natthaphon, 2009. "A new version of a solar water heating system coupled with a solar water pump," Applied Energy, Elsevier, vol. 86(9), pages 1423-1430, September.
    8. Jing, Z.X. & Jiang, X.S. & Wu, Q.H. & Tang, W.H. & Hua, B., 2014. "Modelling and optimal operation of a small-scale integrated energy based district heating and cooling system," Energy, Elsevier, vol. 73(C), pages 399-415.
    9. Aliyu, Mansur & Hassan, Ghassan & Said, Syed A. & Siddiqui, Muhammad U. & Alawami, Ali T. & Elamin, Ibrahim M., 2018. "A review of solar-powered water pumping systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 87(C), pages 61-76.
    10. Bandaru, Rohinikumar & C., Muraleedharan & M.V., Pavan Kumar, 2019. "Modelling and dynamic simulation of solar-thermal energy conversion in an unconventional solar thermal water pump," Renewable Energy, Elsevier, vol. 134(C), pages 292-305.
    11. Ayompe, L.M. & Duffy, A. & Mc Keever, M. & Conlon, M. & McCormack, S.J., 2011. "Comparative field performance study of flat plate and heat pipe evacuated tube collectors (ETCs) for domestic water heating systems in a temperate climate," Energy, Elsevier, vol. 36(5), pages 3370-3378.
    12. Daniel Chludziński & Michał Duda, 2020. "A New Concept and a Test of a Bubble Pump System for Passive Heat Transport from Solar Collectors," Energies, MDPI, vol. 13(5), pages 1-16, March.
    13. Hossain, M.S. & Saidur, R. & Fayaz, H. & Rahim, N.A. & Islam, M.R. & Ahamed, J.U. & Rahman, M.M., 2011. "Review on solar water heater collector and thermal energy performance of circulating pipe," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(8), pages 3801-3812.

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