| 摘要 |
A heat exchanger specifically intended to act as a water heater by heating water utilizing heat rejected from a gaseous refrigerant in a refrigeration system includes first and second, generally parallel, spaced tubular water headers ( 10,12 ) with a plurality of water tubes ( 14 ) extending in spaced relation between the water headers ( 10,12 ) and in fluid communication therewith. An inlet ( 16 ) is provided to one of the headers ( 10 ) and water outlets ( 20,28,30 ) are provided from at least one of the water headers ( 10,12 ). A plurality of gas tubes ( 32 ), at least one for each water tube ( 14 ), are helically wound about a corresponding one of the water tubes ( 14 ) and have opposed ends ( 34,36 ) connected to respective ones of first and second, generally parallel, spaced gas headers ( 40,42 ).
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