An-Najah National University



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  • Wednesday, September 29, 2010
  • Thermal Analysis of Discrete Water Supply in Domestic
  • Published at:Proceeding of The Seventh Jordanian International Mechanical Engineering Conference 27-29/9/2010.Paper No. 1569320448
  • Energy and water are very important commodities to human life. The world is

    suffering from a critical shortage in water and energy; the researchers must work hard to

    find sources of potable water and renewable energy. Energy and water saving

    techniques has a great importance especially in this transmission period. In this paper

    analyses were done for discrete water supply in hot water storage tanks, aiming to

    reduce energy and water losses. The analyses were based on an experimental study for

    the temperature distribution in the hot water storage tank for different flow rates and off

    periods, 3, 6, and 9 lpm, and 5, 10, and 15 minutes were considered for flow rates and

    off periods respectively. It has been found that increasing the hot water consumption

    rate reduces the total delivered hot water to the consumer. The analyses indicated

    increase in the usable hot water for small and medium off periods. This increase results

    in water and energy saving for the consumer. Also optimum off periods for the different

    flow rates were obtained after which the total usable hot water starts decreasing as


    This optimum off period is valuable to save water and energy, and can be

    integrated with the solar radiation in winter and summer to determine the new optimum

    off periods for the different locations and time.

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Prof. Dr.-Ing. Mohammed Abu-Hilal
Applied Mechanics, Mechanical Vibration
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