| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve a coefficient of performance as a whole by a simple and inexpensive configuration by considering pressure loss and distribution performance of a coolant in each of a plurality of plate heat exchangers. <P>SOLUTION: In the heat exchanger unit 1 composed by serially connecting the plurality of plate heat exchangers 2A-2D, and a distribution function in each plate heat exchanger is relatively set such that, if a heat exchanger functions as an evaporator, a coolant distribution function of a plate heat exchanger in a coolant upstream side becomes higher than a coolant distribution function of a plate heat exchanger in a coolant downstream side, and if a heat exchanger functions as a condenser, a coolant distribution function of a plate heat exchanger in a coolant upstream side becomes lower than a coolant distribution function of a plate heat exchanger in a coolant downstream side. In such configuration, a distribution effect corresponding to a state of phase change of the coolant in each of the plate heat exchangers is realized, and a high coefficient of performance as a whole heat exchanger unit is secured. <P>COPYRIGHT: (C)2010,JPO&INPIT |
