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September 15, 2021
The high-efficiency heat exchanger mainly breaks the fluid laminar bottom layer on the inner and outer sides of the pipe through the special shape of the pipe to enhance the heat transfer efficiency. Compared with the ordinary tube heat exchanger, the efficiency is improved. Let's take a look at these efficient heat exchangers
Low finned tube high efficiency heat exchanger
The low finned tube of the low finned tube heat exchanger is a special tube whose outer surface is rolled into threaded fins. The low finned tube not only increases the heat exchange area, but also divides the fluid boundary layer when the shell side fluid flows through the fin surface, the thickness of the boundary layer is thinned and the heat transfer resistance is reduced; In addition, the periodic disturbance caused by the fluid at the fin tip also accelerates the heat transfer between the fluid and the wall. Under the dual action of fluid boundary layer thinning and periodic disturbance, the heat transfer coefficient outside the tube is strengthened, which greatly improves the heat transfer efficiency of the heat exchanger.
High finned tube heat exchanger
High finned tube for high efficiency heat exchanger is a special tube with smooth tube as tube blank and spiral fins formed by rolling and pressing on the outer surface of the tube. It is mainly divided into single metal high finned tube and bimetallic high finned tube. The single metal high finned tube processes the outer surface of the metal tube blank into fins, and the fins are integrated with the metal tube; Bimetallic high finned tube is composed of two kinds of metal tubes, and the outer surface of the outer metal tube blank is processed into fin. The high finned tube not only expands the heat exchange surface area, but also promotes the fluid disturbance, reduces the heat transfer resistance, effectively increases the heat transfer coefficient outside the tube, and greatly improves the efficiency of the heat exchanger.
Baffle rod high efficiency heat exchanger
The baffle ring of the baffle rod high-efficiency heat exchanger is welded by a group of parallel equidistant baffle rods and a circular support ring. Every four adjacent baffle rings are a group, which clamp the heat exchange tube from four directions respectively to replace the bow baffle plate of the traditional heat exchanger to support the heat exchange tube bundle. The fluid in the shell side of the heat exchanger flows downstream along the axis of the heat exchange tube. Further, the special tube is used to enhance heat transfer, which can greatly improve the heat transfer efficiency of the heat exchanger.
Spiral baffle high efficiency heat exchanger
The baffle plate of spiral baffle heat exchanger is spirally assembled by several fan-shaped baffle plates. The medium in the shell side flows forward spirally in the helical channel composed of baffles, the fluid is not easy to form a flow dead zone in the heat exchanger, and the fluid flow is more uniform. At the same time, the use of special tubes to enhance heat transfer can greatly improve the heat transfer efficiency of the heat exchanger.