Shandong Plate Heat Exchanger: Introducing the structure and characteristics of spiral plate heat exchangers
Release time:
2023-02-20 09:54
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Shandong Plate Heat Exchanger: Introducing the Structure and Characteristics of Spiral Plate Heat Exchangers
1. This facility is made of two rolled sheets, forming two uniform spiral channels. The two heat transfer media can perform full counter-current flow, greatly improving the heat transfer effect. Even with two substances with small temperature differences, the ideal heat transfer effect can be achieved.
2. The inlet and outlet in the shell adopt a radial structure, with low local resistance. Because the refractive index of the spiral channel is uniform, the liquid flow in the system will not have much turning, and the overall frictional resistance is small, so the design flow rate can be increased to achieve a relatively high level of heat transfer.
3. The Type I non-dismountable spiral plate heat exchanger spiral channel port uses welding sealing, thus having high airtightness.
4. The basic principle of the Type II dismountable spiral plate heat exchanger is basically the same as that of the non-dismountable heat exchanger, but one channel can be disassembled for cleaning, especially suitable for heat exchangers with viscous and depositing liquids.
5. The basic principle of the Type III dismountable spiral plate heat exchanger is basically the same as that of the non-dismountable heat exchanger, but its two channels can be disassembled for cleaning, with a wider range of applications.
Shandong Plate Heat Exchanger: Four Major Advantages of Spiral Plate Heat Exchangers
1. High Heat Transfer Efficiency
The liquid performs spiral flow in the spiral plate heat exchanger, and the centrifugal force generated improves the fluid turbulence level. In addition, the locking columns in the channel also destroy the boundary layer and create vortices. Therefore, seepage can be generated under relatively low flow resistance, generally between Re=1400~1800, and seepage can be generated even when Re=500, depending on the layout and number of locking columns.
2. Counter-current Flow of Two Liquids and Ultra-low Temperature Heat Transfer
Two liquids can undergo counter-current heat exchange in a relatively long spiral channel. When the inlet and outlet temperatures of the two fluids are constant, the counter-current logarithmic mean temperature difference will be larger than that of parallel flow, cross flow, or counter-cross flow, so the heat transfer quantity of the utilization coefficient is also very large. On the other hand, if the same heat transfer quantity of the utilization coefficient is required, using counter-current heat transfer can achieve this with a smaller logarithmic mean temperature difference. This is very beneficial for the utilization of low-temperature heat sources.
3. Not Easy to Fouling
The liquid in the spiral plate heat exchanger mainly uses a single-pass flow, and the flow rate is higher than that of other types of heat exchangers (generally, 2 meters/second for liquids with low viscosity, and 20 meters/second for gases), so fouling is not easy to occur.
4. Compact Structure, No Fittings, Simple Manufacturing
Spiral plate heat exchangers are made of rolled metal plates, so there are no components such as cylinders and casings that do not contribute to heat exchange. Under the same heat transfer area, it is much more compact than tubular heat exchangers, and the heat transfer area per unit area is about 2 to 3 times that of tubular heat exchangers. The amount of machining during manufacturing is reduced, and the cost is low.
Shandong Plate Heat Exchanger: Thank you for watching. Our company has various types of heat exchangers. If you have any needs, please feel free to call us for consultation.
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