Plate heat exchangers are commonly used in modern civil and industrial heat exchange equipment, and its operation status directly affects each heat exchange system. In the process of using the Heat Exchanger, the problem of insufficient heat exchange often occurs. The following is a detailed analysis of the reasons for the insufficient heat exchange of the Plate heat exchanger:
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The type selection is too small, the heat exchange area is insufficient
The selection of the heat exchanger is small, the heat exchange area is insufficient, and the actual heat exchange of the equipment does not meet the requirements of the working conditions, which is an important factor that directly affects the Plate Heat Exchanger. Therefore, when designing and selecting a heat exchanger, we must accurately verify the technical parameters such as temperature, pressure, medium, and flow.
2. Poor condensate discharge
If the trap is blocked, the trap needs to be cleaned in time.
If the design of the condensate pipe is too small, the condensate discharge is not smooth, and it is difficult to adjust the heat exchange amount. The size of the condensate pipe should be appropriately increased.
3. The air in the heat exchange equipment is not discharged
The presence of air in the heat exchanger will have a certain effect on the heat exchange effect. Therefore, during the initial operation of the heat exchange system, water filling or use should be deflated periodically.
4. Insufficient steam or poor drainage
If the steam volume is not provided according to the selection calculation book for board replacement, then the system requirements cannot be met. At the same time, the drainage is not smooth, and the pressure of the steam is increased, which will cause the hot side safety valve to jump. Therefore, the operating personnel can only reduce the steam intake and open the bypass operation for a long time, which greatly reduces the heat exchange efficiency of the heat exchanger.
5. Scaling in the heat exchanger
The fouling of the plate heat exchanger will greatly reduce the heat exchange efficiency, thereby lowering the outlet temperature and causing insufficient heat exchange.
6. Insufficient flow on the hot or cold side
Flow is the "power" of the heat exchanger. If the flow is insufficient, the temperature of the inlet and outlet on both sides will decrease, and the amount of heat exchange will also decrease.
