Structurers of spray heat exchanger and casing heat exchanger


1.The Spray heat exchanger

Structure: Cooling water is drained from the sprinkler of the uppermost pipe and flows down the surface of the pipe. The cooled fluid flows in from the uppermost pipe, flows out from the lowermost pipe, and exchanges heat with the outside cooling water. During the downstream process, the cooling water can be collected and redistributed.

Advantages: simple structure, low cost, high pressure resistance, easy maintenance, cleaning, good heat transfer effect

Disadvantages: The cooling water spray is not easy to be uniform and affects the heat transfer effect, and can only be installed outdoors.

Application: For cooling or condensing liquid in the tube.

2.The casing heat exchanger

Structure: concentric sleeves composed of different diameters. According to heat transfer requirements, several sections of sleeves are connected by U-shaped tubes to increase the heat transfer area; the hot and cold fluids can be countercurrent or cocurrent.

Advantages: simple structure, convenient processing, high pressure resistance, large heat transfer coefficient, maximum counter-flow can be maintained to maximize the average logarithmic temperature difference, and the number of pipe segments can be increased or decreased.

Disadvantages: the structure is not compact, the metal consumption is large, the joints are many and easy to leak, and the area is large.

Uses: Widely used in ultra-high pressure production process, can be used in occasions where the flow rate is not large and the required heat transfer area is not much.

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