Method for storing hot water at different temperatures in a tank, has a double heat exchanger having one part at a higher level than the other and sequentially fed

摘要

The hot water storage tank (10) provides for hot and warm water by having two heat exchangers (51,52) in series connection at different levels. The heat source (53) supplies a heating medium (55) to both in sequence so that the first, upper (51) is at a higher temperature than the lower.