What causes pressure drop in heat exchangers

What causes pressure drop in heat exchangers?

1.The running system pipeline is not purged properly, especially in the newly installed system pipeline, many dirt (such as welding slag) enters the interior of the plate heat exchanger. Because the cross-sectional area of the plate heat exchanger is narrow, Precipitates and suspended solids in the heat accumulator accumulate at the corner hole and in the diversion zone, resulting in a large reduction in the flow path area there, causing a major pressure loss at this location.

2. When the plate heat exchanger is selected for the first time, the area is too small, resulting in a high flow rate between the plates and a large pressure drop.

3. After the plate heat exchanger is operated for a period of time, the pressure drop is too large due to scaling on the surface of the plate.