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Application of combined heat-and-power and absorption cooling in a supermarket

Author

Listed:
  • Maidment, G. G.
  • Zhao, X.
  • Riffat, S. B.
  • Prosser, G.

Abstract

In recent years, it has become standard practice to consider Combined Heat-and-Power (CHP) systems for commercial buildings. CHP schemes are used, because they are an efficient means of power generation. Unlike conventional power stations, they produce electricity locally and thus minimise the distribution losses, however, they also utilise the waste heat from the generation process. In applications where there is a combined heating and electricity requirement, a very efficient means of energy production is achieved compared to the conventional methods of providing heating and electricity. With new initiatives from the UK government on reduced energy-use, energy-efficient systems such as CHP have been considered for new applications. This paper summarises the results of an investigation into the viability of CHP systems in supermarkets. The viability of conventional CHP has been theoretically investigated using a mathematical model of a typical supermarket. This has demonstrated that a conventional CHP system may be practically applied. It has also been shown that compared to the traditional supermarket design, the proposed CHP system will use slightly less primary energy and the running costs will be significantly reduced. An attractive payback period of approximately 4 years has been calculated. Despite these advantages a considerable quantity of heat is rejected to atmosphere with this system and this is because the configuration utilises the heat mainly for space heating which is only required for part of the year. To increase the utilisation time, a novel CHP/absorption system has been investigated. This configuration provides a continuous demand for the waste heat, which is used to drive an absorption chiller that refrigerates propylene glycol to -10°C for cooling the chilled-food cabinets. The results show this concept to be theoretically practical. The system has also been shown to be extremely efficient, with primary energy savings of approximately 20%, when compared to traditional supermarket designs and this would result in significant revenue cost savings as well as environmental benefits. Based upon these savings a payback period for this system of approximately 5 years has been demonstrated.

Suggested Citation

  • Maidment, G. G. & Zhao, X. & Riffat, S. B. & Prosser, G., 1999. "Application of combined heat-and-power and absorption cooling in a supermarket," Applied Energy, Elsevier, vol. 63(3), pages 169-190, July.
  • Handle: RePEc:eee:appene:v:63:y:1999:i:3:p:169-190
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    Citations

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    Cited by:

    1. Sun, Liuli & Han, Wei & Jing, Xuye & Zheng, Danxing & Jin, Hongguang, 2013. "A power and cooling cogeneration system using mid/low-temperature heat source," Applied Energy, Elsevier, vol. 112(C), pages 886-897.
    2. Trygg, Louise & Amiri, Shahnaz, 2007. "European perspective on absorption cooling in a combined heat and power system - A case study of energy utility and industries in Sweden," Applied Energy, Elsevier, vol. 84(12), pages 1319-1337, December.
    3. Ge, Y.T. & Tassou, S.A. & Chaer, I. & Suguartha, N., 2009. "Performance evaluation of a tri-generation system with simulation and experiment," Applied Energy, Elsevier, vol. 86(11), pages 2317-2326, November.
    4. Udomsri, Seksan & Martin, Andrew R. & Martin, Viktoria, 2011. "Thermally driven cooling coupled with municipal solid waste-fired power plant: Application of combined heat, cooling and power in tropical urban areas," Applied Energy, Elsevier, vol. 88(5), pages 1532-1542, May.
    5. Jradi, M. & Riffat, S., 2014. "Tri-generation systems: Energy policies, prime movers, cooling technologies, configurations and operation strategies," Renewable and Sustainable Energy Reviews, Elsevier, vol. 32(C), pages 396-415.
    6. Ge, Y.T. & Tassou, S.A. & Suamir, I.N., 2013. "Prediction and analysis of the seasonal performance of tri-generation and CO2 refrigeration systems in supermarkets," Applied Energy, Elsevier, vol. 112(C), pages 898-906.
    7. Calise, Francesco & de Notaristefani di Vastogirardi, Giulio & Dentice d'Accadia, Massimo & Vicidomini, Maria, 2018. "Simulation of polygeneration systems," Energy, Elsevier, vol. 163(C), pages 290-337.
    8. Chua, K.J. & Yang, W.M. & Wong, T.Z. & Ho, C.A., 2012. "Integrating renewable energy technologies to support building trigeneration – A multi-criteria analysis," Renewable Energy, Elsevier, vol. 41(C), pages 358-367.
    9. Hao, Xiaoli & Yang, Hongxing & Zhang, Guoqiang, 2008. "Trigeneration: A new way for landfill gas utilization and its feasibility in Hong Kong," Energy Policy, Elsevier, vol. 36(10), pages 3662-3673, October.

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