Heat transfer principle of brazed plate heat exchanger

Source: 　 Time: 2020-10-13 15:04:59　Hit:

The brazed plate heat exchanger is a new type of high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes.

Thin rectangular channels are formed between the various plates, and heat exchange is carried out through the half plates. Compared with conventional shell-and-tube heat exchangers, its heat transfer coefficient is much higher under the same flow resistance and pump power consumption, and it has a tendency to replace shell-and-tube heat exchangers within the applicable range.

Application range of brazed plate heat exchanger:
The brazed plate heat exchanger is mainly used for refrigeration, evaporator, condenser, and oil cooling, steam heating with relatively large flow.

Heat transfer characteristics of brazed plate heat exchanger:
Brazed plate heat exchangers can be used for heating, industrial cooling, oil compressor and compressor oil cooling, air conditioning, frozen food, chemical refrigeration, water cooling, drinking water treatment, wastewater treatment, heat recovery, etc.
In terms of operation and maintenance, if there is particulate matter in the water, a filter should be used, and reverse washing with water can remove most of the soft particulate matter. The compact brazed plate heat exchanger should be reversely washed with citric acid or other acid that does not corrode copper and stainless steel every 3 to 5 years. The brazed plate heat exchanger has the advantages of no gasket, no leakage, light weight, small size, low price, easy disassembly and installation, and high heat transfer efficiency. The structure can be applied to steam, water or process fluids and can be used under conditions such as extremely small temperature differences between the two fluids. The brazed plate heat exchanger consists of stainless steel plates with efficient heat transfer surfaces. The stainless steel plates are brazed with copper with a purity of 99% at high temperatures to obtain a tight, leak-proof and strong heat exchanger. The compact brazed plate heat exchanger is designed to consist of a maximum of 20 stainless steel corrugated plates, and each second end plate is turned upside down to form a large number of contact points between all the plates. When brazing, the contact points are also welded together to form a compact plate, so that almost all the sheet structural materials (about 94% of the surface) can be used for heat transfer. The plate type forms two separate channels, in which the medium forms convective motion, which causes high turbulence in the channel system, and obtains excellent heat transfer characteristics. Even at low speeds, the fouling will be kept at an absolute minimum.

YOJO is a professional heat exchange equipment manufacturer specializing in the production of brazed plate heat exchangers and providing plate heat exchanger maintenance services. At present, more than 50,000 yojo plate heat exchangers are operating well in all walks of life, and yojo has gradually developed into brazing A leader in the field of plate heat exchangers.

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