Publish Time: 2023-05-22 Origin: Site
The finned tube heat exchanger is one of the most successful inventions in the process of improving tube heat exchange, and this method is one of the most widely used in various tube heat exchange enhanced heat transfer methods. It is widely used in various industries such as dehumidification, drying, heating, and ventilation systems for air heating or cooling air conditioning systems for air cooling, power, petroleum, and chemical industry. Finned tube heat exchangers are a common heat exchange equipment in the industry, fin tube heat exchanger is mainly composed of heat dissipation row tube and outer frame, and it has a variety of classification methods. According to the classification of the heat medium: hot water type, steam type; according to different material classification: carbon steel, stainless steel; according to the finned tube process classification: around the piece, rolling type, string piece type. Below we introduce several advantages of heat exchangers.
Good overall heat transfer performance
Strong anti-dust accumulation and ash-plugging capability
Free arrangement of heat transfer surfaces on both sides of the hot and cold fluids
Highly efficient low-temperature corrosion resistance
The finned tube heat exchanger relies on the phase change of the internal medium to achieve heat transfer, it is used for low-grade heat recovery and is very economical, the fins on the outside of the heat pipe greatly reduce the convective heat transfer resistance on both sides, greatly increasing the heat transfer area, thereby increasing the heat transfer. In addition, the finned tube heat exchanger can easily achieve pure countercurrent flow of hot and cold fluids and vertical sweeping flow outside the fluid tube, increasing the average temperature and pressure of hot and cold fluids, and heat transfer without changing the inlet temperature of the hot and cold fluids.
Flue gas through the tube outside the sweeping flow of heat transfer, the flue gas more turbulent. In addition, the high temperature of the finned tube wall makes the outside of the tube always dry, so it does not stick to dust, will not coke, and can effectively prevent blockage.
The heat transfer element of the finned tube heat exchanger is a finned tube, whose evaporation section, condensation section length and fin ratio are determined independently on each side for each fluid according to the given heat transfer, fluid temperature, flow rate, nature, and cleanliness, without interference between the two sides, ensuring that the finned tube heat exchanger can be applied to the heat transfer and cleanliness between the two fluids in the structure.
When finned tube heat exchangers are used for corrosive flue gas waste heat recovery, ND steel seamless tubes can be used, and the heat exchanger wall temperature can be adjusted by adjusting the process structure so that the heat exchanger tube avoids the maximum corrosion temperature range as much as possible.
Many people choose to use finned tube heat exchangers when selecting heat exchangers. Excellent heat transfer performance and affordable price are the mainstays of the market for finned tube heat exchangers. I hope this article can help you in choosing a heat exchanger.
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