For now, shell and tube heat exchangers and plate heat exchangers belong to the same heat exchanger equipment, and their performance is similar. Next, we have to shell and tube heat exchangers and plate heat exchangers of these two characteristics to be compared, and put forward the reference selection of models, hoping to provide some reference.
First of all, in the case of prolonged use, the shell and tube heat exchanger heat exchange efficiency is higher than the plate heat exchanger:
In fact, at the beginning of use, the heat exchange efficiency of a plate heat exchanger is generally slightly higher than that of a shell-and-tube heat exchanger, but due to its own structural design, it is likely to result in the later use Plate heat transfer sites for scaling and corrosion, resulting in reduced heat transfer efficiency of the host, cooling output decreased significantly, while also increasing energy consumption. So in the process of using, need regular cleaning.
In addition, with the use of time increases, the plate heat exchanger cleaning cycle will continue to be shortened. And the board for cleaning can not be absolutely clean, the long run will naturally lead to greatly reduce the heat transfer efficiency of the equipment, affecting the use of results. The shell and tube heat exchanger tube bundle through the tube plate fixed, so the gap between the two relatively large, easy to plug, to ensure long-term stable and efficient operation.
Second, the use of shell and tube heat exchanger is better:
This is also mainly determined by the structural characteristics of the heat exchanger equipment. In comparison, plate heat exchanger due to narrow flow path, so the fluid into the runner may be uneven distribution, which will lead to fluid freezing, blocking the phenomenon of frozen plate change. The shell and tube heat exchanger fluid channel clearance, to ensure uniform flow, to avoid the "ice blocking" phenomenon.
Finally, shell and tube heat exchangers have lower maintenance costs:
In fact, the shell and tube heat exchanger belongs to a virtually maintenance-free product for the user. Even if the shell and tube heat exchanger is found to leak, only need to use plugging method can make it in a short period of time to resume working performance.