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In the marine turbine, the  heat exchanger  is to ensure that the turbine is in normal equipment. Of course, there are many common heat exchangers, such as runner type and plate type. The advantages and disadvantages of different heat exchangers are very obvious. The plate type heat exchanger is often used in the electrical equipment of the turbine engineering. This type of heat exchanger is small in size and relatively high in efficiency. It has been used in marine turbines, but it is in urgent need of further promotion. Based on the current situation, the actual application of the plate heat exchanger is introduced in detail. In the marine turbine, heat exchange is undoubtedly a very critical factor to ensure the normal use of the turbine. When the turbine is working, it needs to maintain a certain temperature to ensure the normal operation of the machinery. At present, there are many heat exchangers in the marine turbine. Among them, the plate type is a very important one...

Spiral  plate heat exchanger  is made of two parallel metal plates made of two spiral channels, heat exchanger between the hot and cold fluid through the spiral plate wall, especially in the treatment of slurry containing particles or fibers in suspension Materials or various viscous fluids. The two most important links in the production process of spiral plate heat exchangers are plate rolling and fixed-length column welding. Murphy has a fully automatic spiral plate flexible production line. The welding of coiled plates and fixed-length columns is performed by CNC operations. The studs are welded with studs, and the welding current is automatically controlled to ensure that the studs are firmly welded, free of overburning and under-welding defects. The fixed-distance columns have high welding efficiency and accurate positioning; the plate rolling force is automatically controlled to ensure The spiral body after rolling has the best tightness, so that the positioning colum...

1.1 Improve heat transfer efficiency The cold and hot fluids transfer heat through the plates of the heat exchanger. The plate heat exchanger is an inter-wall heat transfer heat exchanger. The fluid is in direct contact with the plate, and the heat transfer methods are heat conduction and convection heat transfer. The key to improving the heat transfer efficiency of the plate heat exchanger is to increase the heat transfer coefficient and the logarithmic average temperature difference. A Reduce the thermal resistance of the dirt layer: ① Improve the heat transfer coefficient of the heat exchanger Only at the same time increase the external heat transfer coefficient of the cold and hot plates. Only use plates with high thermal conductivity to reduce the thickness of the plates to effectively increase the heat transfer coefficient of the heat exchanger. a. Improve the heat transfer coefficient of the plate The external heat transfer coefficient is related to the geometric structure ...

What is brazed heat exchanger ? Brazed heat exchanger is an evolution of detachable heat exchanger, the sealing material is changed from rubber pad to copper, and all the plates are combined together by copper solder. Brazed plate heat exchanger is one of the new equipment in the field of heating and cooling. Brazed heat exchanger does not have sealant pad, all the plates are made of high temperature melted and welded copper foil, the plate has a unique herringbone corrugated design, can make the fluid in low flow rate also achieve the effect of turbulence, heat transfer efficiency is high, brazed  heat exchanger sizing is usually small, mainly used in high temperature and high pressure, rubber pad can not adapt to the working conditions. It also has certain disadvantages, brazed heat exchanger can not be separated to clean, can not be repaired, the price is slightly higher. How does a brazed heat exchanger work? The brazed plate heat exchanger is made of many stamped corruga...

We usually use four types of  heat exchanger s to control heat: shell and tube heat exchangers, plate heat exchangers, tube heat exchangers, and fin heat exchangers. The theory behind heat exchangers is based on solid, liquid or gaseous media, applying heat transfer, conduction, convection, and radiation. Specifically, the medium and temperature affect the choice of a heat exchanger. One factor that is often overlooked is whether a noise is likely to occur. For example, if you have an open-loop ground source heat pump, you will not want to use a plate heat exchanger, but prefer to use the coaxial cable model, which has high speed and low head conditions and is not easy to produce noise. When we have to choose which type of heat exchanger to use for the refrigerant to water heat exchanger, we need to consider this design. Many products on the market will use the COAX model or copper model. Traditionally, we use the COAX model for high speed and low head, but we want to reduce the...