Central air-conditioning is not the thicker the better?
Thick tubes are durable, but often the first is not copper tube, and the heat exchange effect depends largely on the internal processing of copper tube. (Amoy shop: dense LED lighting)
Can learn from the mainstream HVAC company central air-conditioning general copper tube diameter 19mm below the thickness of 0.8mm, diameter 19mm above the thickness of 1mm. Copper tube is too thin, there are hidden dangers, the cost is relatively low. Of course, the above standard thickening 1mm to 2mm, too thick and no effect. Riverside HVAC company for you to answer
Air conditioning copper pipe must be able to withstand some pressure, because there is pressure difference inside and outside the pipe, not the thicker the better. More than the pressure requirements, and the pursuit of pipe wall thickness, waste materials, financial resources.
Not so, the air conditioning copper tube thickness is matched, small air conditioning with big copper tube can not, big air conditioning with small copper tube also not.The operation of refrigerant in the central air conditioner determines the use effect directly, so the quality of refrigerant copper tube is very important. The traditional R22 refrigerant (Freon) tube pressure is generally about 20 kilograms, and R410 new refrigerant, the pipe pressure reached 40 kg. Therefore, the central air conditioner that uses new refrigerant needs to choose better refrigerant copper pipe. Note: 410A environmental protection media require copper tube wall thickness to be thick enough.The installation of refrigerant copper tubes is the most important part of the installation process of central air conditioning. 1. All welding points shall be welded at the joint of the copper pipe and the branch pipe. There shall be no welding between the copper tube and the copper pipe. 2, in the welding process, must be in the copper tube into nitrogen (nitrogen welding process), this makes the copper pipe inside the air, avoid welding, so that the inner wall of carbon, so in the formal operation into the compressor and failure. 3. After welding, the high pressure nitrogen shall be used to blow ash in the pipe to keep the copper tube clean.Then nitrogen and pressure, this is the completion of welding must be carried out on the copper pressure test, to the copper tube filled with a certain pressure of nitrogen for holding pressure, the general pressure test time is 24 hours. It should be noted that the use of R410 refrigerant, you need to keep the pressure of 40 kg, R22 refrigerant, you need to keep the pressure of 20 kg. Nitrogen is an inert gas with a small coefficient of expansion. There is almost no change in pressure due to thermal expansion and cold contraction. If there is a decrease in the pressure gauge during the test, check that the refrigerant pipe is welded.
