What are the characteristics of plate heat exchangers? A Jinan plate heat exchanger manufacturer explains.
Release time:
2022-05-30 12:00
Source:
Jinan Plate Heat ExchangerManufacturer believesPlate heat exchangers are a new type of compact heat exchanger that has been developed and widely used in recent decades. It consists of a series of parallel thin metal plates with corrugated surfaces, while spiral plate heat exchangers are more compact and have better heat transfer performance.
Jinan Plate Heat ExchangerManufacturer believesA plate heat exchanger consists of three main parts: heat transfer plates, sealing gaskets, clamping devices and other components, such as clamping studs, guide rods and connecting pipes. On the fixed pressure plate, plates and gaskets are alternately placed, then the movable pressure plate is placed, and the clamping bolts are tightened to form a plate heat exchanger. The heat transfer plates are stacked in a certain order to form flow channels between the plates. The cold fluid and the hot fluid flow in the corresponding flow channels on both sides of the plate, and heat exchange is carried out through the heat transfer plate.
Jinan Plate Heat ExchangerManufacturer believesCharacteristics of plate heat exchangers:
1. Large logarithmic mean temperature difference.
2. Small footprint, compact structure, easy to clean.
3. Light weight, plate thickness is generally 0.4-0.7mm.
4. High heat transfer coefficient, the corrugation of the plate can cause turbulence in the fluid at low flow rates.
5. The heat transfer area or process combination can be changed. The required heat transfer area can be achieved by increasing or decreasing the number of plates. The port arrangement of the plates can be changed, suitable for different heat exchangers.
6. Low price.
Jinan Plate Heat ExchangerManufacturer believesIn the tube side and shell side of the fixed tube plate heat exchanger, fluids of different temperatures flow through the heat exchange to complete the heat exchange. When the temperature difference between the two fluids is large, in order to avoid high temperature difference stress, a compensation ring is usually added at an appropriate position in the shell side(expansion joint). When the thermal expansion of the shell and tube bundle is different, the compensation ring undergoes slow elastic deformation to compensate for the thermal expansion caused by the temperature difference stress.
Jinan Plate Heat ExchangerManufacturer believesThe fixed tube plate heat exchanger consists of components such as a tube box, shell, tube plate, and steel pipes. It has a compact structure, many tubes, a larger area under the same diameter, and simpler manufacturing. Its structural characteristics are that a tube bundle is provided in the shell, the tubes at both ends of the tube bundle are fixed to the tube plate by welding or expanding, the tube plates at both ends are directly welded to the shell, the inlet and outlet pipes of the shell side are directly welded to the shell, and the outer circumference of the tube plate is fastened to the flange of the head with bolts, The inlet and outlet pipes of the tube side are directly welded to the header, and several baffles are set inside the tube bundle according to the length of the heat exchange tube. The tube side of this heat exchanger can be divided into any number of channels by baffles. The fixed tube plate heat exchanger has a simple structure, low manufacturing cost, easy cleaning of the tube side, and the tube side can be divided into multiple passes, and the shell side can also be divided into two passes, so it is widely used in engineering. The outer shell is difficult to clean, so it is not suitable for dirty or corrosive media.
The above are some knowledge points about plate heat exchangers, hoping to help everyone.
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