How to install a heat exchanger unit? How to improve its heat transfer efficiency?
Release time:
2022-11-14 14:16
Source:
Heat exchanger units are equipment used in many industries. To make your use more convenient, the following editor will share some precautions for the installation of heat exchanger units.
1. After unpacking, the equipment should be checked item by item according to the packing list. If the equipment does not meet the requirements, the supplier should be notified in writing to solve the problem in time.
2. This equipment is designed with lifting holes for lifting. Before lifting, the steel wire rope should be selected according to the quality indicated on the nameplate.
3. The equipment should be placed horizontally in a place without pipes or other equipment obstructions. There should be about one meter of operating space around the equipment for easy maintenance.
4. If the outlet pressure of the pump is greater than the pressure of the equipment, a pressure reducing valve should be installed in the fluid pipeline entering the equipment.
5. If a pressure control valve assembly is used, it should be installed on the inlet pipe of the equipment, not the outlet.
6. The inlet and outlet pipes of the equipment should be cleaned before installation to prevent sundries such as sand, oil, and welding slag from entering the equipment, and to avoid internal blockage or damage to the plates.
So the heat exchanger unitheat transfer performancehow toimprove？
1. Improve the surface heat transfer coefficient of the plate
BecauseHeat Exchanger Unitthe corrugation will cause turbulence in the fluid at a lower flow rate, so the surface heat transfer coefficient will be higher. The surface heat transfer coefficient is related to the geometric structure of the plate corrugation and the flow state of the medium. The plate shape is herringbone, straight line, spherical, etc. After years of research and experiments, it has been found that the triangular herringbone plate with corrugated joints has a higher surface heat transfer coefficient, and the channel between the plates with a larger angle and higher speed of the corrugated part has a higher surface heat transfer coefficient.
2. Reduce the thermal resistance of the fouling layer
The key to reducing the thermal resistance of the fouling layer of the heat exchanger is to prevent scaling on the plate. When the plate scale thickness is1mm, the heat transfer coefficient decreases by about 10%. Therefore, it is necessary to pay attention to monitoring the water quality on both sides of the heat exchanger to prevent scaling on the plate and the adhesion of impurities in the water to the plate. Some heating units add chemicals to the heating medium to prevent water theft and corrosion of steel, so pay attention to the pollution of water quality and adhesives to the heat exchange plate. If there are viscous substances in the water, special filters should be used for treatment. When choosing drugs, it is recommended to use non-sticky drugs.
3. Select plate materials with high thermal conductivity.
The plate material can be austenitic stainless steel, titanium alloy, copper alloy, etc. Stainless steel has good thermal conductivity, about14.4 w/(MK), high strength, good stamping performance, and is not easy to oxidize. It is lower than titanium alloy and copper alloy, and is mostly used in heating engineering, but its resistance to chloride ion corrosion is poor.
ForHeat Exchanger Unitthe above methods can be used, and its heat exchange capacity can be improved at the same time. If you want to improveHeat Exchanger Unitefficiency but can't do it, you can consult our professional heat exchanger unit manufacturer.
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