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Thermal performances of water heaters in series

Author

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  • Kar, A. K.
  • Al-Dossary, K. M.

Abstract

The thermal performance of a single-tank electric water heater is compared with that of a dual-tank electric water heater for the same average domestic hourly hot-water use pattern. Both water heaters have the same total power rating and volume capacity. However, the power rating and volume capacity of each tank in a dual-tank water heater are varied to find the best combination in terms of total hot-water output and energy saving. It is found that using two tanks connected in series provides about 10% more hot water at the required temperature while requiring about 4·5% less energy when the second tank has 10-30% of the total volume and 70-80% of the total power rating.

Suggested Citation

  • Kar, A. K. & Al-Dossary, K. M., 1995. "Thermal performances of water heaters in series," Applied Energy, Elsevier, vol. 52(1), pages 47-53.
    • Handle: RePEc:eee:appene:v:52:y:1995:i:1:p:47-53
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    File URL: http://www.sciencedirect.com/science/article/pii/0306-2619(95)00014-J
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    Cited by:

    1. Fuentes-Cortés, Luis Fabián & Ma, Yan & Ponce-Ortega, Jose María & Ruiz-Mercado, Gerardo & Zavala, Victor M., 2018. "Valuation of water and emissions in energy systems," Applied Energy, Elsevier, vol. 210(C), pages 518-528.
    2. Hegazy, Adel A., 2007. "Effect of inlet design on the performance of storage-type domestic electrical water heaters," Applied Energy, Elsevier, vol. 84(12), pages 1338-1355, December.
    3. Fuentes-Cortés, Luis Fabián & Dowling, Alexander W. & Rubio-Maya, Carlos & Zavala, Víctor M. & Ponce-Ortega, José María, 2016. "Integrated design and control of multigeneration systems for building complexes," Energy, Elsevier, vol. 116(P2), pages 1403-1416.

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