久久精品国产亚洲网址,国产精品成人观看视频国产奇米,亚洲欧洲一区二区三区在线,国产三级视频网站,99er在线视频,久久国产资源,99热99热

This kind of heat exchanger is to bend the metal tube into various shapes suitable for the container and immerse it in the liquid in the container. The advantage of the coil heat exchanger is that it has a simple structure, can withstand high pressure, and can be made of corrosion-resistant materials; The disadvantage is that the liquid turbulence in the container is low, and the heat transfer coefficient outside the tube is small, in order to improve the heat transfer coefficient.