What are the differences between refrigerants and refrigerant carriers?

Many people confuse refrigerant and coolant. The following will answer your question. Refrigerant, also called refrigerant, is commonly known as snow in some southern regions. It is a working substance that is constantly circulating in the refrigeration system, completing the cooling by changing its own state. The working substance that completes the thermal cycle in a refrigerator.

It absorbs heat from the object being cooled at low temperatures and then transports it to the higher temperature cooling water or air. In vapour compression refrigerators, refrigerants that can be liquefied at room temperature or lower are used, such as Freon (fluorine, chlorine and bromine derivatives of saturated hydrocarbons), azeotropic mixed refrigerants (azeotropic solutions formed by mixing two types of Freon in a certain ratio), hydrocarbons (propane, ethylene, etc.) , ammonia, etc. In gas compression refrigerators, gaseous refrigerants, such as air, hydrogen, helium, etc. and these gases are always gaseous in the refrigeration cycle; in absorption refrigerators, binary solutions consisting of absorbent and refrigerant are used as working media, such as ammonia, water and lithium bromide (molecular formula: LiBr. White cubic crystals or granular powder, easily soluble in water) and water, etc. The steam-injected refrigerators use water as refrigerant. The main technical indicators of refrigerants include strong saturated vapour pressure, specific heat, viscosity, thermal conductivity, surface tension, etc. After 1960, a great deal of experimentation was carried out on the use of non-azeotropic mixtures, which have been used for the liquefaction and separation of natural gas. Single-stage compression using non-azeotropic mixtures can result in lower sweating temperatures, thus increasing refrigeration capacity and reducing energy consumption. Their performance is directly related to the refrigeration function, economy, safety and operational management of refrigeration equipment, so an understanding of the performance requirements of refrigerants cannot be ignored.

Refrigerant, the substance that transfers heat from the cooled object to the evaporating refrigerant in refrigeration equipment that works in an indirect cooling mode, is called a refrigerant. Usually, the coolant is a liquid, which usually does not change phase during heat transfer. However, some refrigerants are gas or liquid-solid mixtures, such as binary ice. Commonly used refrigerants include: water, brine, ethylene glycol or propylene glycol solutions, methylene chloride and trichloroethylene, generally excluding monochlorodifluoromethane. This refrigerant is generally used as a refrigerant and is only used as a refrigerant for direct refrigeration. If this is not clear, I will discuss the difference between a refrigerant and a coolant by way of example. As a simple example, a refrigerant is coal, which produces heat when burned. A coolant is the water that circulates in a heating system to carry the heat and deliver it to thousands of homes.