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Advantages of marine plate heat exchanger
Release time:
2020-09-03
One advantage of marine plate heat exchanger is its high heat transfer coefficient.
What is the plate heat exchanger? Next, we will talk about the advantages of marine plate heat exchanger by comparing it with shell-and-tube heat exchanger.
One advantage of marine plate heat exchanger is its high heat transfer coefficient. Because different corrugated plates are inverted to form a complex channel, the fluid flows from one corrugated plate to the other in a spiral three-dimensional flow, which can generate flow at a lower coefficient, so its heat transfer coefficient is higher, generally 3~5 times that of the shell-and-tube type. Then, the logarithmic average temperature difference of the marine plate heat exchanger is large and the terminal temperature difference is small. In the other type of heat exchanger, because the two fluids are cross-flow in different degrees, the logarithmic average temperature difference correction coefficient is small, while the marine plate heat exchanger mostly adopts the parallel flow or countercurrent method, and the coefficient is usually around 0.95. In addition, the movement of the cold and hot fluid is parallel to the heat release surface and there is no side flow, so the terminal temperature difference is small, Heat exchange for water can reach below 1 ℃. The floor area is small, because its internal structure is compact, the heat exchange area per unit volume is 2~5 times of that of the other type, and there is no need to reserve the maintenance place for extracting the tube bundle, so the same degree of heat exchange can be achieved. Then the product is easy to change the heat exchange area or process composition. Only a few plates need to be added or reduced to achieve the purpose of increasing or reducing the heat exchange area. By changing the arrangement of plates or replacing several plates, the required process composition can also be achieved, so as to adapt to the new work. Its weight is light and its price is low. The thickness of the thin sheet is only 0.4~0.8 mm. Because of its light weight, its price can be 40%~60% lower with the same material. It is very convenient to make marine plate heat exchanger. Because it adopts stamping processing and has a high degree of standardization, it can be produced in large quantities. The heat loss is small, easy to be cleaned, and not easy to produce dirt. Because the gap between the heat transfer surfaces is small, there are also bumps, so the pressure loss is greater than the traditional smooth tube.
Through the above explanation of the marine plate heater, I don't know if you know the specific advantages. Don't forget. That's all about the heater.
