The hot plate heat exchanger has the best flow state

Date:2019-10-31

The advantage of the spiral plate heat exchanger is that the fluid in the spiral channel is turbulent at a lower Reynolds number due to the action of inertial centrifugal force and the interference of the fixed column, and allows a higher flow rate to be selected, so the heat transfer coefficient is large; The flow rate is high, and there is inertial centrifugal force. The suspended matter in the fluid is not easy to deposit, so the spiral plate heat exchanger is not easy to scale and block; because the flow length of the fluid and the two fluids can be completely reversed, it can be smaller. Operating under temperature difference, it can make full use of low-temperature heat source; compact structure, the heat transfer area per unit volume is about 3 times that of shell-and-tube heat exchanger. The disadvantages are: the operating temperature and pressure should not be too high, the current maximum operating pressure is 2 MPa, the temperature is below 400 ° C; because the entire heat exchanger is rolled, once the leak is found, maintenance is very difficult.

Hot plate heat exchanger

The hot plate heat exchanger is a new type of high efficiency plate surface heat exchanger, and the basic unit of heat transfer is a hot plate. The forming method is that the double-layer or multi-layer metal plates are spot-welded or rolled into various patterns according to the principle of equal resistance flow, and the edge welding is sealed and integrated. The plates are inflated under high pressure to form a space to achieve an optimal flow state of the flow channel structure. The thickness of each layer of metal plates may be the same or different, and the number of plates may be two or more layers, thus forming a variety of heat plate heat transfer surface forms, such as unequal thickness double-layer hot plates, equal thickness double-layer heat Plates, three layers of thick hot plates), four layers of thick hot plates, etc., can be selected according to needs when designing.

Hot plate heat transfer surface form of hot plate heat exchanger.

The hot plate heat exchanger has the best flow state, low resistance and high heat transfer efficiency; it can be manufactured into various shapes according to engineering needs, and different plates can be selected according to the properties of the medium. The hot plate heat exchanger can be used for heating, heat preservation, drying, condensation and other processes. As a new type of heat exchanger, it has broad application prospects.

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