| 摘要 |
An energy-saving liquid/liquid heat exchanger and a method for a dishwasher or a similar appliance which discharges hot waste water contains a hot water tank for the waste water of the dishwasher and inlet and outlet tubes, a cold water tank for the fresh water reaching the water heater, a bundle of heating tubes in the tanks which contain a coolant that boils at low temperatures and extract the heat from the hot water tank and conduct it to the cold water tank, as a result of which the temperature of the fresh water which leaves the cold water tank is higher than its inlet temperature. <IMAGE>
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