Problems And Measures In The Operation Of Plate Heat Exchanger System

The plate heat exchanger is a high-efficiency heat exchanger made up of a series of metal sheets with a certain corrugated shape. In the plate heat exchanger system, the commonly used media are water and steam water for heating or refrigeration industries. Then the water-water and steam-water plate heat exchangers are prone to failures and treatment measures during system operation.

1.Water-water plate heat exchanger

Phenomenon

Cause

Measures

The return water temperature on the hot side is too high

Heat exchange area is too small

Cold test blockage

Increase heat transfer area

Disassemble the heat exchanger for cleaning

Cold side water supply temperature is too low

Excessive cold side flow

Dirt on hot and cold side

Hot side flow is too low or temperature is too low

Adjust cold side flow

Disassemble the heat exchanger for cleaning

Increase hot side flow or increase temperature

2.Steam-water plate heat exchanger

Phenomenon

Cause

Measures

No heat transfer

Blocked trap

Increase heat transfer area

Disassemble the heat exchanger for cleaning

Water hammer

The water level in the heat exchanger is too high

Adjust the amount of steam

Hot and cold water temperature is too high

The heat exchange area is too small or the plate type is not suitable

Too much steam

Cold side flow is too small

ncrease area or adjust plate type, adjust plate type, reduce steam volume, increase cold side flow