Shandong Zhilin Environmental Protection Technology Co., Ltd.

Introduction to the principle and characteristics of plate heat exchangers.

Release time:

2022-09-14 11:34

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Introduction to the principle and characteristics of the detachable plate heat exchanger A detachable plate heat exchanger consists of two concentric circular tubes with different diameters. Because the heat transfer direction is radial, it is also called a radial heat pipe. When the temperature on the outside of the outer tube is high and the temperature inside the inner tube is low, the working medium in the vacuum heats up and evaporates, causing a difference in the inner frame to expand, forming a material transfer from the hot end to the cold end, where condensation occurs. That is, when the outer tube of the heat pipe is heated, the working medium evaporates and flows towards the cold side, where it releases latent heat of vaporization by cooling and condensing back into liquid, then returning to the hot side.

Introduction to the principle and characteristics of dismountable plate heat exchangers

A dismountable plate heat exchanger consists of two concentric circular tubes with different diameters. Because the heat transfer direction is radial, it is also called a radial heat pipe. When the temperature of the outer surface of the outer tube is highThe inner tube is low temperature, vacuum heat working medium heating evaporation inner frame gap expands, forming material and cold end, cold side condensation, that is, when the heat transfer heat pipe outer tube, working medium heating evaporation, flow to the cold side, in the steam cooling medium, vaporization latent heat release, condensation into liquid, and then return to the hot side.

Dismountable plate heat exchanger

Dismountable plate heat exchangers are among the most space-saving types of heat exchangers currently available. Under the same heat exchange conditions, the floor space of a plate heat exchanger is only1/3 ~ 1/4 that of a shell and tube heat exchanger, and disassembly does not require additional maintenance space. It allows the liquid to flow between the two plates, forming turbulent flow. Metal plates of different pressures are made. The flow path of the "chevron" small particle plate is formed by two adjacent chevron corners with a 180-degree difference. Therefore, there are many persistent corners between the plates, up to 2 corners per 130mm. The flow path is not easily deformed, has high pressure resistance, and can withstand a strong pressure difference. At the same time, because the flow is three-dimensional, the turbulence is more intense, so the heat transfer coefficient is high. Because the flowing medium in the plate group can form turbulence at a low Reynolds number (Re), and fouling is not easily formed on the smooth plate, it has a very high heat transfer efficiency. In general water-water heat exchange, the heat transfer coefficient of a plate heat exchanger above 2℃ can reach 6000W/m, which is 3-8 times that of a shell and tube heat exchanger.

Because of its high heat transfer coefficient, excellent flow ratio characteristics, and complete reflux, the dismountable plate heat exchanger can select a very low heat exchange temperature difference, so it is very suitable for low energy and heat recovery, and it is economically feasible to achieve more than 90% heat recovery using a single-plate heat exchanger.Folding plate heat exchangers have good adaptability. After installation, the metal plate group can be added or reduced to meet the process requirements of expansion and contraction. A heat exchanger is a tool that transfers heat from one heat source to another. These two devices are either in contact with each other or separated by a wall. Heat exchangers are used to control the temperature of wastewater pipes, air conditioners, or refrigerators. They are also commonly used in automobiles and buildings. Some industries need heat exchangers every day to prevent fires and damage, and are also used for residential or industrial liquid heating and cooling needs, involving units. The water in the tank is used as an energy source. For any liquid used in any industry, such as food or medical, plate heat exchangers can be used if necessary. A plate heat exchanger is a mobile device. Heat transfer between metal plates. Unlike traditional heat exchangers, the flat type is, because the liquid is dispersed on more surfaces, increasing the exchange rate. The metal tubes of this heat exchanger are used to heat the fluid.

According to the different external and internal components of the dismountable plate heat exchanger, the welded plate exchange plates are welded together, and vacuum brazing modeling is used for brazed plates. Different heat exchangers have different internal components, and in many cases, smaller components work better, some chambers are designed to be very thin, allowing most of the liquid to contact the plate, improving heat transfer. Smaller coils can better withstand extreme pressure, and plate heat exchangers used in various ways are advantageous. It is durable, portable, and easy to maintain. The working principle of the whole system is different, the liquid does not occupy too much space, and the plates are easy to separate and clean. Choose a good exchange method and understand various designs and operating environments.

Advantages of plate heat exchangers

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