Nowadays, many enterprise factories are gradually increasing the demand for plate heat exchangers
. Therefore, many enterprises or factories now go to the purchase of plate heat exchangers, but many people have very little understanding of plate heat exchangers, so users are When you choose a plate heat exchanger, you need to pay attention to what problems, let's take a look at it.
When selecting the plate heat exchanger, the enterprise user should select the control parameters for the heat exchanger material, working pressure, design temperature and so on. When selecting a heat exchanger, the flow rate should be as large as possible on the side with a small heat transfer coefficient, and the heat transfer coefficients on both sides of the two fluid heat exchange surfaces should be equal or similar to each other to improve the heat transfer coefficient. The temperature of the fluid heated by the heat exchanger should be 10 ° C lower than the saturation temperature at the outlet pressure of the heat exchanger and should be lower than the operating temperature of the water pump used for the secondary water. The fluid containing sediment should be filtered and passed into the heat exchanger.
When the plate heat exchanger is selected, the flow rate at the interface of the side fluid with a small temperature difference should not be too large, and the pressure drop should be met. For the case where the flow rate is large and the pressure drop is small, the plate type with low resistance should be selected, and vice versa, the plate type with large resistance should be selected. Detachable or welded according to fluid pressure and temperature.
It is not advisable to use a plate with too small a single plate area to avoid excessive number of plates, and the flow velocity between the plates is small, which reduces the heat transfer coefficient. The heat exchange medium of the plate heat exchanger should not be steam.