There are many refrigeration methods, and the following are commonly used:
1. Liquid vaporization refrigeration
2. Gas expansion and refrigeration
3. Vortex tube refrigeration
4. Thermoelectric cooling
Among them, liquid vaporization refrigeration is the most widely used. It uses the heat ab...
1.Precautions for welding operation
When welding, the operation should be carried out strictly according to the steps, otherwise, the quality of welding will be affected.
(1) The surface of the pipe fittings to be welded should be clean or flared. The flared m...
It is imminent to find replacements for second- and third-generation refrigerants!
On September 15, 2021, the "Kigali Amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer" entered in...
In recent years, the country and related logistics companies have begun to pay attention to the development of cold chain logistics, because cold chain logistics can effectively ensure food safety, and the low temperature in the co...