Copper coil is a seamless copper tube produced by drawing and delivered in rolls. Copper coiled tube is divided into: copper square tube, copper round tube, rectangular copper tube according to the shape. Copper coils have a variety of specifications, diameter φ0.5 ~ φ30mm, wall thickness of 0.3 ~ 3mm. Copper (cu) content of 99.9%, phosphorus (p) 0.015% ~ 0.04%, internal and external diameter allowable deviation for the inner diameter ± 0.02, outside diameter ± 0.03, tensile strength m ≧ 205, y2 for 245 ~ 370, y ≧ 345, elongation of 10%, per square of internal surface area containing impurities ≦ 0.310g, the inner hole of the smooth pressure difference or flow according to customer requirements in 6.9 ~ 7.8 pa. 7.8 pa, the pipe is not deformed, no air leakage, copper coil surface smooth, clean, no cracks, pinholes, peeling, delamination, bubbles, inclusions and green rust, the use of wooden coils wrapped around the way to pack.
Copper coil is one of the many types of copper pipe. Copper tube is also known as copper pipe. A kind of non-ferrous metal tube. It is pressed and drawn seamless tube. Lighter weight, good thermal conductivity, high low temperature strength. Commonly used in the manufacture of heat transfer equipment (such as condensers, etc.). Also used for oxygen equipment in the assembly of low-temperature piping. Small diameter copper tube is commonly used in the transportation of pressurized liquids (such as lubrication systems, hydraulic systems, etc.) and used as instrumentation pressure measurement tube.
Application of copper coil for air conditioning
Copper coils are generally used in small Freon refrigeration units below 10kW. Copper coils made of copper, length 1 ~ 6m, inner diameter of 0.5 ~ 30mm through the length and diameter of a variety of combinations can be made to meet the requirements of different conditions and different refrigerant refrigerant devices, but the copper coil was selected and installed, it can not change with the load changes, in order to make the refrigeration unit in the majority of the time under the high-efficiency operation, the choice of a representative design of the working conditions is very important!
The nature of copper coil.
1, copper coil is economic. Because of the copper pipe is easy to process and connect, make it in the installation, can save material and total cost, stability can be reliable, can save maintenance.
2, copper coil is lightweight. For the same inner diameter of the stranded threaded pipe, copper pipe does not require the thickness of ferrous metal. When installed, copper pipe transportation costs are smaller, maintenance is easier and takes up less space.
3,Copper coil can change shape. Because copper pipe can be bent, deformation, it can often be made into elbows and joints, smooth bending allows copper pipe to bend at any angle.
4, copper coil is easy to connect.
5, copper coil is safe. No leakage, no combustion, no toxic gases, corrosion resistance.
Copper coiler hard texture, not easy to corrosion, and high temperature, high pressure, can be used in a variety of environments. Compared with this, many other pipe shortcomings are obvious, such as the past residential galvanized steel pipe, very easy to corrode, the use of a long time will appear yellow tap water, water flow becomes small and other issues. There are also some materials at high temperatures will rapidly reduce the strength of the hot water pipe will produce unsafe hidden danger, and the melting point of copper as high as 1,083 degrees Celsius, the temperature of the hot water system on the copper pipe is negligible. Archaeologists in the Egyptian pyramids found 4,500 years ago, the copper water pipe, can still be used.
Copper coil weight formula, copper is pure copper: pure copper is purple red, also known as copper. Pure copper density of 8.96, melting point of 1083 ° C., the weight of copper coil.
The mass of copper coiler is calculated as follows: G=8.96πδ(D-δ)/1000
G: mass kg δ: tube wall thickness mm D: tube diameter mm
The grades of copper suitable for manufacturing copper coils are TP2 and T2.
