As a common heat exchanger in heating system, the operation of heat exchanger has a direct impact on the quality of external heating.The analysis of the causes of the problems in the operation of heat exchangers is of great significance to the safe operation, energy saving and consumption reduction of heat exchanger stations.So if there is insufficient heat transfer in the process of plate replacement, how can we analyze and judge it? Today I would like to introduce you briefly:

1. The area of Plate heat exchanger

If the area of heat exchanger is insufficient, it is an important factor that directly affects the heat exchanger. Therefore, when designing a project, it is necessary to confirm the parameters correctly.

2. Poor condensate discharge

If the trap is blocked, as long as the trap is cleaned up, it can be solved in time. In addition, the design of condensate pipeline is too small, which will also cause poor condensate discharge and make it difficult to regulate heat transfer. In this case, the size of condensate pipeline should be enlarged to solve the problem.

3. Insufficient steam or poor hydrophobicity

If the steam volume is not provided according to the type selection calculation book of plate replacement, then it will not be able to meet the needs of the system. It is agreed that if the drainage is not smooth, the steam pressure will rise, causing the hot side safety valve to take off. Then the operators can only reduce the steam intake and long-term open bypass operation, which greatly reduces the heat exchange efficiency of heat exchangers.

4. Water clogging

Characteristic: The temperature difference between inlet water and outlet water of heat exchanger is large, the pressure difference between inlet water and outlet water is large, and the condensate water temperature is high, and the heat transfer capacity is insufficient. The blockage of water pipeline results in the decrease of water circulation flow and heat transfer coefficient of heat exchanger.

5. Insufficient flow on hot side or cold side

Flow rate is the "power" of heat exchanger. If the flow rate is insufficient, the inlet and outlet temperatures on both sides will decrease, and the heat transfer will also decrease.

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