What are the functions of the heat exchanger accessory baffle and bypass baffle?

As we all know, the purpose of the heat exchanger accessory baffle and bypass baffle is to prevent short circuit of fluid flow rate. If part of the fluid involved in the heat exchange flows out of the main flow and short-circuits through the equipment gap, the competition speed and heat exchange coefficient will decrease. Let me share with you the functions of the heat exchanger accessory baffle and bypass baffle:

1. The tubes are blocked at both ends of the baffle tubes of the heat exchanger. Each baffle tube occupies the position of a heat exchange tube and is installed behind the partition Cao, but should not be installed at the notch of the partition. The baffle tube does not pass through the tube sheet. Usually, one baffle tube is arranged for every 3-4 rows of tubes. The baffle tube can also be replaced by the tie rod of the fixed distance tube;

2. The double-circuit power supply baffle of the heat exchanger is generally placed in the baffle tank and welded to the top. It is used to reduce the fluid mechanics short-circuit failure of the outer ring gap, and is mostly used as a U-shaped tubular heat exchanger;

3. Practice has proved that only when the heat transfer coefficient of the shell side fluid is controlled in the heat transfer process, the installation of the heat exchanger accessory baffle and the bypass baffle can be prominent. The larger the ratio of the bypass area to the shell side flow area, the installation The more obvious the effect.