Advantages and disadvantages of Immersed coil heat exchanger

Date:2018-11-01

The material of the heat transfer element of the coiled-tube heat exchanger is divided into two categories: metal and non-metal. In recent years, coiled-tube metal heat exchangers have developed rapidly in the world and have become the main form of heat exchange devices. Non-metallic coil heat exchangers have high cleanliness heat exchange materials, and corrosion resistance is crowned in various alloys, such as Zhengzhou Industry. The research on the heat exchange manufacturing process of non-metallic snake tube polytetrafluoroethylene in the university has promoted the wide application of the coil heat exchanger in the fields of petrochemical, sulfuric acid, medicine, electroplating and light industry.

Immersed coil heat exchanger

Structure: This type of heat exchanger is usually wound with metal pipes or made into various containers and immersed in the liquid in the container.

The immersed coil heat exchanger has a serpentine tube as a heat exchanger for the heat transfer element, and is one of the types of the partition wall heat exchanger. This is an ancient heat exchange device. The utility model has the advantages of simple structure, convenient manufacture, installation, cleaning and maintenance, low price, and is particularly suitable for cooling and condensation of high-pressure fluid, so it is still widely used in modern times. However, the coiled-tube heat exchanger is bulky and cumbersome; the unit heat transfer area has a large amount of metal consumption and low heat transfer efficiency.

Advantages: Simple structure, easy to prevent corrosion, and can withstand high pressure.

Disadvantages: Since the volume of the container is much larger than the volume of the tube, the surface heat transfer coefficient of the fluid outside the tube is small. In order to increase the heat transfer coefficient, a stirrer can be installed in the container.

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