Shandong Zhilin Environmental Protection Technology Co., Ltd.

Principle and characteristics of high-efficiency plate heat exchangers

Release time:

2020-07-08 12:01

Source:

High-efficiency plate heat exchangers are a new type of high-efficiency heat exchanger made by stacking metal plates with a certain corrugated shape. The structure includes gaskets, pressure plates (movable end plates, fixed end plates), and a frame. The plates are sealed and guided by sealing gaskets, separating the cold and hot fluid channels. The cold/hot heat exchange media flow through their respective channels and exchange heat with the separated plates to achieve the required temperature.

I.High-efficiency Plate Heat ExchangerWorking Principle

1. Working Principle: A plate heat exchanger is a new type of high-efficiency heat exchanger formed by stacking metal plates with a certain corrugated shape. The structure includes gaskets, pressure plates (movable end plate, fixed end plate), and a frame. The plates are sealed and guided by sealing gaskets, separating the cold and hot fluid channels. The cold/hot heat exchange media flow through their respective channels and exchange heat with the separated plates to achieve the required temperature.

2. High-efficiency Plate Heat ExchangerFeatures

1) Compact structure, space saving: The detachable plate heat exchanger has a compact structural design and small overall size. Compared with shell and tube heat exchangers, it can save 50%-80% of space.

2) Energy-saving and efficient: Under the same working conditions, less cooling medium is needed, so less driving power is needed under the same working conditions.

3) Diverse plate materials: The plate material can be selected according to the acidity and alkalinity of the user's medium to meet the service life of the user's product.

4) Low maintenance cost, easy maintenance: Modular design, convenient for later maintenance, if damaged, a single module can be replaced, which is more economical. Moreover, when cleaning dirt, the detachable plate heat exchanger can be easily opened, and the cleaning agent used for surface cleaning can be high-pressure water (acid can be used for cleaning in special working environments).

3.High-efficiency Plate Heat ExchangerKey Technologies

1) Plate fluid distribution design: There are three zones of distribution, guiding, and heat exchange. It can reduce the disadvantages such as the decrease in heat exchange efficiency, the increase in the dead zone, and the increase in local scaling tendency caused by uneven flow distribution.

2) Plate surface contact design: The corrugated peak and valley surface contact design of the plate guiding area and the heat exchange area plays a crucial role in improving the heat exchange efficiency of the plate.

3) Different channel designs: The design of the H and L sizes and angles of the plates, and the B and M widths of the flow channels. It can better use different states of fluid media and reasonably adjust the flow rate, pressure drop, and intensity of heat transfer.

4) Design of gasket buckles, cross-sections, leakage chambers, and double seals. It effectively solves the problems of strength, sealing, and compactness caused by the extrusion of plates.

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