Plate heat exchanger instead of shell and tube heat exchanger

At present, plate heat exchanger is more widely used than other heat exchanger equipment, mainly because of the following characteristics:

1, high heat transfer efficiency

The design of corrugated plate with high thermal conductivity of thin films as the goal, special channel formed by the corrugated plate, the fluid at low velocity can be produced under strong disturbance flow (Tuan Liu), and the effect of self purification flow disturbance to prevent fouling and heat transfer efficiency is very high.

Generally speaking, the heat transfer coefficient K value of plate heat exchanger in the range of 3000 ~ 6000W/m2.oC. This shows that the plate heat exchanger needs only the shell and tube heat exchanger area of 1/2 ~ 1/4 to achieve the same heat transfer effect.

2

Since the heat exchange plate is easy to be disassembled, the most suitable heat transfer effect and capacity can be obtained by adjusting the number of the heat exchange plates or changing the process. As long as the middle frame of the heat exchanger is used, the heat exchanging plate component can have various special functions. This provides users with the possibility to change the amount of processing and change the heat transfer coefficient K value or increase the possibility of new functions.

3, small heat loss

Because of the compact structure and small size, the surface area of the heat exchanger is very small, so the heat loss is very small.

4, the use of safe and reliable

Sealing device between the boards on the design of the 2 seals, and a signal hole leak can be discharged from the external heat exchanger, which prevent the two kinds of media mix, but also played a role in security alarm.

5, is conducive to the use of low temperature heat source

As the two medium is almost full countercurrent flow, as well as high heat transfer effect, the minimum temperature difference between the two plates can reach 1oC. It is the most ideal equipment to recover low temperature waste heat or use low temperature heat source.

6, small cooling water

Plate heat exchanger due to the geometry of its flow path, as well as two kinds of liquid are very high thermal efficiency, so that the amount of cooling water can be greatly reduced. This in turn reduces the installation cost of piping, valves and pumps.

7, less resistance loss

Under the condition of the same heat transfer coefficient, the resistance loss can be controlled in the range of 1/3 of the shell and tube heat exchanger through reasonable selection of flow rate.

8, small footprint, easy maintenance

Plate heat exchanger structure is very compact, the heat transfer in the same conditions, the space occupied by the shell and tube heat exchanger 1/2 ~ 1/3. The pipe exchange that need to set aside a great space to pull out tube maintenance. The plate heat exchanger only need to loosen the clamping screw, in the original space within the scope of the 100% contact heat exchange plate surface, and disassembly is very convenient.

9, high investment efficiency

In the condition of the same heat transfer, heat exchanger and shell and tube heat exchanger, the heat exchange area, covers an area of, fluid resistance, reduce the numerical cooling water project, the equipment investment and infrastructure investment, power consumption and cost is greatly reduced, especially when the need to use expensive materials. Because of high efficiency and thin sheet, equipment is more economical.