Refrigeration is the process of extracting heat from a device that is cooler than the ambient temperature, in order to balance the incoming heat from the outside and keep the device in a low-temperature state, or to continuously reduce the internal temperature until a low-temperature liquid accumulates.
Heat can only be transferred from high-temperature objects to low-temperature objects. To remove heat from low-temperature objects, artificial methods must first be used to create a lower temperature state, enabling it to absorb and carry away heat. In theory, refrigeration capacity refers to the amount of heat that can be carried away. According to the different ways in which refrigeration causes low temperatures, the cooling capacity can be divided into three types: throttling effect cooling capacity, expansion mechanism cooling capacity, and the cooling capacity provided by the refrigerator.
There are differences and connections between the concepts of cooling capacity and cooling capacity. Cooling capacity is an attribute of a device, while cooling capacity is an attribute of a substance. By using a refrigerator (including air compression and expansion of air separation equipment) for refrigeration, the temperature of the material can be reduced; After the temperature drops, substances have the ability to absorb heat, which is achieved through device refrigeration, giving them a cooling capacity.
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