The domestic hot-water systems involve a high level of
Chapter 8, Problem 8148(choose chapter or problem)
The domestic hot-water systems involve a high level of irreversibility and thus they have low second-law efficiencies. The water in these systems is heated from about 158C to about 608C, and most of the hot water is mixed with cold water to reduce its temperature to 458C or even lower before it is used for any useful purpose such as taking a shower or washing clothes at a warm setting. The water is discarded at about the same temperature at which it was used and replaced by fresh cold water at 158C. Redesign a typical residential hot-water system such that the irreversibility is greatly reduced. Draw a sketch of your proposed design.
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