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Car air conditioner condenser

A condenser is a component of a refrigeration system and belongs to a type of heat exchanger. It can convert gas or vapor into a liquid, and quickly transfer the heat in the tube to the air near the tube. The working process of the condenser is an exothermic process, so the condenser temperature is relatively high.

Definitions and materials

A condenser is a component of a refrigeration system and belongs to a type of heat exchanger. It can convert gas or vapor into a liquid, and quickly transfer the heat in the tube to the air near the tube. The working process of the condenser is an exothermic process, so the condenser temperature is relatively high.

The materials of the condenser are generally carbon steel, stainless steel, and copper. Among them, when the carbon steel tube sheet is used as a cooler, the weld between the tube sheet and the column tube often causes corrosion leakage. Causes environmental pollution and waste of materials.

Classification

Steam condenser This kind of condensation is often applied to the condensation of the secondary steam of the multi-effect evaporator to ensure the vacuum of the final-effect evaporator.
Example (1) Spray type condenser, cold water is sprayed from the upper nozzle, steam enters from the side inlet, the steam is fully condensed into water after coming into contact with the cold water, and it flows down the pipe, and some non-condensable gas may also be taken out.
Example (2) Filled condenser. After entering the side pipe, the steam comes in contact with the cold water sprayed on it. The condenser is filled with porcelain ring packing. After the packing is wetted with water, the contact area between cold water and steam is increased After the steam condenses into water, it flows out along the lower pipe, and the non-condensable gas is pumped out by the vacuum pump with the upper pipe to ensure a certain degree of vacuum in the condenser.
Example (3) Drain plate or sieve plate condenser, the purpose is to increase the contact area of cold water and steam. The hybrid condenser has the advantages of simple structure and high heat transfer efficiency, and the problem of corrosiveness is relatively easy to solve.

Function and characteristics

The general refrigeration principle of a refrigerator is that the compressor compresses the working medium from low-temperature and low-pressure gas to high-temperature and high-pressure gas, and then condenses into a medium-temperature and high-pressure liquid through a condenser. The low-temperature and low-pressure liquid working medium is sent to the evaporator, which absorbs heat and evaporates in the evaporator to become low-temperature and low-pressure steam, which is sent to the compressor again to complete the refrigeration cycle.

The single-stage vapor compression refrigeration system is composed of four basic components: a refrigeration compressor, a condenser, a throttle valve, and an evaporator. They are connected by pipes in order to form a closed system. The refrigerant is continuously circulated in the system. Flow, state changes, and heat exchange with the outside world.

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