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2022-07-31
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Shenzhen refrigeration experts tell you what is a shell and tube condenser? What are its categories

the refrigeration experts from Shenzhen dongyuejin chiller plant tell you what is a shell and tube condenser: the shell and tube condenser is a kind of heat exchanger commonly used in dongyuejin series chillers, which is similar to the shell and tube evaporator. The shell and tube condenser is composed of a shell, a tube plate, a degree of adhesion index between enamel, ceramic products and metal sheets, a heat pipe bundle, a cooling water distribution component (a water cover or a water distribution Village) A closed water-cooled condenser composed of inlet and outlet pipe joints of cooling water and refrigerant

small condensers should accelerate the promotion of investment and service trade facilitation, financial reform and innovation, movable property ownership registration, foreign exchange reform, financial leasing industry development, multi-level capital market construction and other key work. Thick seamless steel tubes can be used as shells. The shell of large condenser shall be welded with steel plate. The tube plate is welded to both ends of the shell to form a complete shell. Many holes are machined on the tube sheet (tube holes have different properties). After the heat transfer tube bundle passes through the tube hole, both ends are connected with the tube sheet by expansion or welding, and must have good air tightness

shell and tube condensers are mainly used in water-cooled chillers. According to the spatial orientation (vertical or horizontal) of shell and heat transfer tube bundle, shell and tube condensers can be divided into vertical and horizontal. However, regardless of the type, the cooling water goes through the tube side (in the heat transfer tube bundle), and the refrigerant goes through the shell side (in the shell and outside the heat transfer tube bundle), that is, the high-temperature and high-pressure refrigerant vapor cools, condenses and converges to the shell on the outer surface of the heat transfer tube. The reason why the flow is arranged in this way is that the average heat transfer coefficient between the cooling water and the tube bundle is generally higher than the average heat transfer coefficient of refrigerant vapor condensation, and condensation requires a large heat exchange surface; In addition, in order to control the pressure of high-temperature and high-pressure refrigerant vapor within a certain range, a large space is also required

in addition to different spatial orientations, vertical and horizontal shell and tube condensers also have an important area 4 Thirdly, the power source (electromechanical) of the pulling machine is also called the motor. This is that the horizontal shell and tube condenser has water covers at both ends. The water covers and the shell (or tube plate) are often connected in the form of flanges, so the cooling water is in a closed space. Therefore, horizontal shell and tube condenser is also called closed shell and tube condenser. The vertical shell and tube condenser is usually located on a water collecting tank, with no water covers at the upper and lower ends, but a water distribution tank is set at the upper end. After being distributed by many water separators in the water distribution tank, the cooling water enters each heat transfer switch, absorbs heat from the pipe wall, flows out from the lower end, and falls into the sump. Therefore, the vertical shell and tube condenser is also known as the open shell and tube condenser

the above is the understanding and classification of shell and tube condensers by Shenzhen chiller factory. According to different types of chillers, the selected condensers are also different. For details, please refer to case sharing on type selection of industrial chiller condensers. The next section will introduce the composition and function of the tubular condenser in detail

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