对各种传热表面的板翅式紧凑热交换器进行了优化设计计算，建立了通用优化程序系统。

The design optimization is accomplished on all kind of plate-fin surfaces of compact heat exchangers and its general optimization program is set up.

youdao

由于该热交换器的紧凑设计，其大小和重量较壳式和管式热交换器降低了75%以上。

And thanks to the exchanger's compact design, the size and weight of the unit is reduced by more than 75 percent in comparison to shell and tube units.

youdao