The heat transfer coefficient outside the tube is small

Date:2019-06-24

The coiled tube heat exchanger is further divided into an immersed coil heat exchanger and a spray coil heat exchanger.

The coils are mostly bent into various shapes compatible with the container by metal tubes and immersed in the liquid in the container.

The advantages are: simple structure, can withstand high pressure, and can be made of corrosion-resistant materials.

Disadvantages: The degree of liquid turbulence in the container is low, and the heat transfer coefficient outside the tube is small.

The spray coil heat exchanger fixes the heat exchange tubes in rows on the steel frame.

The hot fluid flows in the tube and the cooling water is evenly dripped over the device.

Advantages: The hot fluid flows in the tube, and the cooling water is evenly dripped above the device. The heat transfer coefficient is large, so the heat transfer effect of the spray heat exchanger is better than that of the immersed coil heat exchanger.

However, it is necessary to be placed in the open air, the location is large, and the water is easily splashed into the surrounding environment, which is inconvenient to use.

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