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Method for improving thermal performance of brazed plate heat exchanger

2023-10-09

When choosing a piece of equipment, each user wants to make the work efficiency of the equipment better, so does the Brazed Plate Heat Exchanger, how to improve its thermal performance has become a high-profile job for each user. How to improve its thermal efficiency.
Brazed Heat Plate Exchanger

1. When the air flow through the brazed plate heat exchanger, due to the water vapor in the air continuously deposited on the surface of the plate tube, the relative humidity of the air is reduced, along the direction of the air flow sheet coil surface of the frost gradually decreased, so the frost of the first few rows of tubes in the Evaporator is more serious, and the frost of the last few rows of tubes is relatively light.

2. The structure of variable pitch plates can be adopted, so that the spacing of plates downstream along the wind direction is smaller and smaller, which can maintain its high heat transfer efficiency under frost conditions and extend its frost flushing time.

3. After the brazed plate heat exchanger adopts the variable pitch plate structure, when the air longitude-sweeps the staggered plate, the staggered distribution of the plate makes the upstream plate have a flow effect on the downstream plate, strengthening the heat transfer capacity of the front half of the plate, and the distribution of the rear panel makes the flow channel narrow and the flow rate increase, so that the heat transfer of the back half of the plate is also strengthened.

4. The modified variable pitch, the structural form is actually staggered plate, when the fluid longitudinal skim plate, the air flow in the upstream plate is disturbed, the heat transfer capacity of the plate on the first few rows of tubes is strengthened.

5. When the air flow through the next few rows of pipes, the improved and added a group of plates to make its flow section quickly narrowed, the flow rate increased, the fluid was further squeezed on the basis of the original, the disturbance was more intense, so that its heat transfer capacity was strengthened. It is necessary to improve the thermal efficiency of brazed plate heat exchanger, increase the heat exchange efficiency of the equipment, improve the working efficiency of the equipment, and improve its flow rate to play its benefits.

Compared with conventional Shell And Tube Heat Exchanger, the heat transfer coefficient of brazed plate heat exchanger is much higher under the same flow resistance and pump power consumption, and there is a trend to replace shell-and-tube heat exchangers in the scope of application.

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