Thermal Analysis of Discrete Water supply in Domestic Hot Water Storage Tank

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 have 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 L/min, 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.