| 摘要 |
The heat exchange system is used for heating a first fluid with a second fluid, and includes a first fluid circuit comprising an upstream end, a downstream end and an intermediate portion therebetween and a second fluid circuit comprising an upstream end, a downstream end and an intermediate portion therebetween. The heat exchange system also includes a flooded heat exchanger unit wherein the intermediate portions of the first and secon d fluid circuits extend and are in adjacent, thermally-conductive contact for allowing heat transfer from the second fluid to the first fluid. The flooded heat exchanger is capable of being flooded i n a determined proportion within the second fluid circuit intermediate portion. The heat exchange system further includes a second fluid circuit control valve located at the second fluid circuit downstream end, for controlling the flow rate of the second fluid through th e second fluid circuit, whereby the proportion of the heat exchanger which is flooded within the second fluid circuit intermediate portion can be selectively calibrated. The heat exchange system also includes a first fluid pre-heating device located between the first fluid circuit upstream en d and the heat exchanger unit, for partly pre-heating the first fluid before it is heated b y the second fluid,whereby the first fluid temperature at the first fluid circ uit downstream end will be stabilized.
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