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Theoretical and practical analysis of an integrated solar hot water-powered absorption cooling system

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  • Darkwa, J.
  • Fraser, S.
  • Chow, D.H.C.

Abstract

Evaluation of a typical integrated solar absorption cooling system has been carried out to determine its overall performance. Analysis of the results revealed an operational efficiency of 61% for the solar collectors at a mean differential temperature (ΔT) of 51 °C as compared with the manufacturer’s rating of 70% at a ΔT of 60 °C. The absorption chiller did however perform quite satisfactorily and achieved a coefficient of performance (COP) of 0.69 as compared with the manufacturer’s rating of 0.7 despite the slight deviation at the collectors end. The installation strategy for the hot water storage tanks also appears to have achieved its objective of maintaining controlled temperature stratification in the tanks. It could therefore be concluded that the system has proved its potential as a viable cooling technology for application in buildings. However, in order to maintain appropriate hot water supply temperature during low solar radiation levels, supplementary heat source such as gas or biomass fired system would have to be considered and incorporated into solar absorption cooling systems.

Suggested Citation

  • Darkwa, J. & Fraser, S. & Chow, D.H.C., 2012. "Theoretical and practical analysis of an integrated solar hot water-powered absorption cooling system," Energy, Elsevier, vol. 39(1), pages 395-402.
    • Handle: RePEc:eee:energy:v:39:y:2012:i:1:p:395-402
    DOI: 10.1016/j.energy.2011.12.045
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    References listed on IDEAS

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    1. Alobaid, Mohammad & Hughes, Ben & Calautit, John Kaiser & O’Connor, Dominic & Heyes, Andrew, 2017. "A review of solar driven absorption cooling with photovoltaic thermal systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 76(C), pages 728-742.
    2. Amirante, Riccardo & Clodoveo, Maria Lisa & Distaso, Elia & Ruggiero, Francesco & Tamburrano, Paolo, 2016. "A tri-generation plant fuelled with olive tree pruning residues in Apulia: An energetic and economic analysis," Renewable Energy, Elsevier, vol. 89(C), pages 411-421.
    3. Siddiqui, M.U. & Said, S.A.M., 2015. "A review of solar powered absorption systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 42(C), pages 93-115.
    4. Fong, K.F. & Lee, C.K., 2014. "Performance advancement of solar air-conditioning through integrated system design for building," Energy, Elsevier, vol. 73(C), pages 987-996.
    5. Hirmiz, R. & Lightstone, M.F. & Cotton, J.S., 2018. "Performance enhancement of solar absorption cooling systems using thermal energy storage with phase change materials," Applied Energy, Elsevier, vol. 223(C), pages 11-29.
    6. Khan, Mohammed Mumtaz A. & Saidur, R. & Al-Sulaiman, Fahad A., 2017. "A review for phase change materials (PCMs) in solar absorption refrigeration systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 76(C), pages 105-137.

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