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Performance assessment of a magnesium chloride saturated solar pond

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  • Bozkurt, Ismail
  • Deniz, Sibel
  • Karakilcik, Mehmet
  • Dincer, Ibrahim

Abstract

This paper deals with the experimental investigation of a magnesium chloride saturated solar pond and its performance evaluation through energy and exergy efficiencies. The solar pond system is filled with magnesium chloride containing water to form layers with varying densities. A solar pond generally consists of three zones, and the densities of these zones increase from the top convective zone to the bottom storage zone. The incoming solar radiation is absorbed by salty water (with magnesium chloride) which eventually increases the temperature of the storage zone. The high-temperature salty water at the bottom of the solar pond remains much denser than the salty water in the upper layers. Thus, the convective heat losses are prevented by gradient layers. The experimental temperature changes of the solar pond are measured by using thermocouples from August to November. The densities of the layers are also measured and analysed by taking samples from at the same point of the temperature sensors. The energy and exergy content distributions are determined for the heat storage zone and the non-convective zone. The maximum exergy destructions and losses appear to be 79.05 MJ for the heat storage zone and 175.01 MJ for the non-convective zone in August. The energy and exergy efficiencies of the solar pond are defined as a function of solar radiation and temperatures. As a result, the maximum energy and exergy efficiencies are found to be 27.41% and 26.04% for the heat storage zone, 19.71% and 17.45% for the non-convective zone in August, respectively.

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  • Bozkurt, Ismail & Deniz, Sibel & Karakilcik, Mehmet & Dincer, Ibrahim, 2015. "Performance assessment of a magnesium chloride saturated solar pond," Renewable Energy, Elsevier, vol. 78(C), pages 35-41.
    • Handle: RePEc:eee:renene:v:78:y:2015:i:c:p:35-41
    DOI: 10.1016/j.renene.2014.12.060
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    References listed on IDEAS

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    1. Husain, M. & Sharma, G. & Samdarshi, S.K., 2012. "Innovative design of non-convective zone of salt gradient solar pond for optimum thermal performance and stability," Applied Energy, Elsevier, vol. 93(C), pages 357-363.
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    5. Murthy, G.R.Ramakrishna & Pandey, K.P, 2003. "Comparative performance evaluation of fertiliser solar pond under simulated conditions," Renewable Energy, Elsevier, vol. 28(3), pages 455-466.
    6. Husain, M. & Patil, P.S. & Patil, S.R. & Samdarshi, S.K., 2003. "Computer simulation of salt gradient solar pond’s thermal behaviour," Renewable Energy, Elsevier, vol. 28(5), pages 769-802.
    7. Subhakar, D. & Srinivasa Murthy, S., 1991. "Experiments on a magnesium chloride saturated solar pond," Renewable Energy, Elsevier, vol. 1(5), pages 655-660.
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    1. Khalilian, Morteza & Pourmokhtar, Hamed & Roshan, Ashkan, 2018. "Effect of heat extraction mode on the overall energy and exergy efficiencies of the solar ponds: A transient study," Energy, Elsevier, vol. 154(C), pages 27-37.
    2. Liu, Chao & Hashemian, Mehran & Shawabkeh, Ali & Dizaji, Hamed Sadighi & Saleem, S. & Mohideen Batcha, Mohd Faizal & Wae-hayee, Makatar, 2021. "CFD-based irreversibility analysis of avant-garde semi-O/O-shape grooving fashions of solar pond heat trade-off unit," Renewable Energy, Elsevier, vol. 171(C), pages 328-343.

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