Is the length of the air conditioning copper pipe as long as possible

Is the length of the air conditioning copper pipe as long as possible

Air conditioners are a very common electrical appliance at home. After buying an air conditioner, many people will find the manufacturer's master to install it. After all, this kind of professional electrical installation project is still relatively complicated, and they really don't have the ability to do it. In the process of installing the air conditioner, the copper pipe of the air conditioner is a very important part. Sometimes, the copper pipe needs to be lengthened, and some masters will tell you that the length of the copper pipe of the air conditioner is as good as possible. Is this the case?

1. Copper pipe is an important raw material for the processing and manufacturing of refrigeration equipment. It has two main uses:

　　 1. Make a heat exchanger. It is an important part of the evaporator and condenser of the air conditioner.

　　2. Making connecting pipes and fittings.

　　 2. What is the standard length of the connecting pipes for the indoor and outdoor units of the household split air conditioner?

　　The standard length of the connecting pipe of the household split-type room air conditioner is 5 meters in accordance with the requirements of the industry or national standards. 1 horse (cooling capacity: 2300W) to 5 horses (cooling capacity: 12500W-13000W), in the actual installation process, should try to control within 5 meters. When the length exceeds the standard 5 meters, the additional refrigerant should be added according to the operating process requirements and the specifications of the connecting pipeline. The additional refrigerant for different air pipes is as follows: when exceeding each meter, 16g/Φ9.52mm air pipe per meter, 16g/Φ12. 70mm trachea per meter, 18g/Φ15.88mm trachea per meter. To ensure air conditioning performance.

　　3. Is the longer the air conditioning copper pipe the better?

Mr. 　　 told me that if the copper pipes of the air conditioner are too long, it will not only affect the working efficiency of the air conditioner, but also consume the equipment and reduce the service life of the air conditioner. In fact, this is the same as drinking with a straw in our daily life. There is a big difference between drinking with a 10cm straw and drinking with a 1m straw. You can experience it yourself~

The air-conditioning copper pipe is mainly connected to the indoor unit and the outdoor unit. The refrigerant (Freon) flows inside. If the copper pipe is too long, the flow of the refrigerant will become slower and slower, resulting in no refrigerant in the air-conditioning compressor. If the method is fully vaporized, there will still be liquid refrigerant, which will undoubtedly increase the load on the compressor and cause headaches for photovoltaics.

In addition, if the copper pipe is too long, the air conditioner may cause the compressor suction superheat to increase during cooling, and the cooling effect becomes worse and worse. On the other hand, when the air conditioner is heating, it will also cause heating loss, so whether it is In either case, the working efficiency of the air conditioner will be reduced.

　　Is the claim of the installer that enough refrigerant is enough? Is it reliable? Naturally, it is unreliable. The more refrigerant in air conditioners, the better, because different air conditioners have different compressor sizes, and the heat exchange between the evaporator and condenser of the air conditioner is fixed. If the refrigerant is too much, it may cause the air conditioner. When the cooling capacity of the compressor becomes smaller, it is easy to have compressor overload protection, or even burn out, which is still more dangerous.

　　Usually, the on-board air conditioner can only be extended by up to 6m, and the cabinet air conditioner can also not exceed 8m. In addition, the air conditioner needs to be supplemented with corresponding refrigerant for every additional 1m.

　　4. How many meters after the extension of the copper pipe of the air conditioner needs to be supplemented with refrigerant?

　　 According to the air-conditioning installation or maintenance process (national standards or industry-related standards): When the connecting pipes between the indoor and outdoor units of the air-conditioning installation exceed the standard length of more than 5 meters, the refrigerant should be added in time. According to different piping specifications or air-conditioning models with different cooling capacities, electronic scales are used to quantitatively add refrigerant to ensure air-conditioning performance (cooling and heating effect), otherwise, the air-conditioning will be in place when the air-conditioning pipe is extended and the refrigerant is not added in time Low cooling or heating operating pressure has always affected performance.

　　 5. How to judge the quality of copper pipes in the living room?

　　1, surface

To judge the quality of copper pipes, the first step is to look at the inner and outer surfaces of copper pipes. They should usually be clean, bright, no obvious oxidation and discoloration, no blisters, pinholes, cracks, peeling, bubbles, black inclusions, green rust and Bumps, mold marks, etc.; the inner surface should not have defects such as free pull wrinkles, scratches, pits, and obvious ring marks. If there are no obvious defects above, and the hand feels smooth, the surface is purple-red, and the brightness is consistent, the judgment is preliminary completed.

　　2, performance

　　The ductility and plasticity of copper are very good, so it is also a good way to check the performance of copper pipes by bending. Generally processed copper tubes are mainly divided into three types: hard, semi-hard and soft. The ductility and plastic flexibility of copper tubes in different states are also different. The most commonly used soft copper tubes are very easy to bend and maintain. Does not break, when it is difficult to bend or cracks and breaks on the surface of the copper tube, it indicates that the quality of the copper tube is not very good.

　　3, inspection

　　 To truly determine the quality of copper pipes, it is necessary to identify them by means of detecting size deviation, chemical composition, mechanical properties, process performance, grain size, and eddy current flaw detection.

　　 The above article is an introduction to the relevant knowledge about the length of air-conditioning copper pipes that the editor brings to you, and I hope to help friends in need. Air-conditioning copper pipe is an indispensable part when we install air-conditioning. When installing air-conditioning, you must know that the length of the air-conditioning copper pipe is not as long as possible. Don't be fooled by the installer.