The letdown heatexchanger reduces letdown fluid temperature to a value that is compatible with the ion exchanger resin.
下泄热交换器将流体的温度降到合适的定值，这个温度下，净化床工作允许。
2
Exchanger (heatexchanger) : it is applicable to cool the treatment fluid used to feed pump, it has to be used in the duty-cycle operation of treatment fluid.
换热器(热交换器)：用于冷却供给泵的工作液，在工作液循环使用的过程中，必须具备。
3
For heatexchanger tube fluid shunt uneven problems, the some design improvements of theheat exchanger has been made in the paper. But there is still huge shortage.