Frequently Used Terms You Should Know about Cold Storage
If you are a technician, then it is out of doubt for you to know these terms; if you are planning to purchase a transport refrigeration unit, then it does not hurt for you to know these terms, so that you will know what kind of unit you are looking for and you will not be perplexed when salesperson says some technical terms. Corun has summarized some terms about cold storage that you should know. Check them out.
Cooling Capacity: heat removed from the cooled substance or space within a specified period of time under specified conditions.
Refrigerant: a fluid transmits heat by phase change in a refrigeration system. It absorbs heat at low temperature and low pressure condition and releases heat at high temperature and high pressure condition.
Coefficient of Refrigeration: in refrigeration cycle, the ratio between the amount of cooling capacity produced and power consumed is called the refrigeration coefficient.
Overheating: the temperature of refrigerant vapor is higher than its saturated temperature under corresponding pressure.
Supercooling: the process of lowering the temperature of the gaseous or liquid refrigerants below the condensing temperature of the given pressure, or the process of reducing the temperature of the liquid or solid refrigerants below the freezing point of the given pressure.
Chiller storage room: a room for storing goods at a temperature higher than its freezing point.
Freezer storage room: cold room for receiving and storing frozen foods.
Freeze-drying: a method of preserving food by dehydration. First freeze the water contained food into a solid state, then sublimate the moisture from the solid state to a gaseous state.
Dry consumption: the weight of food is reduced due to evaporation of water in food or ice crystal sublimation in the process of cooling, freezing, and refrigeration.
Refreezing: after the first freeze, the second freezing of all or part of the product is called refreezing.
Cooling load: the cooling load is the amount of heat energy that would need to be removed from a space to maintain the temperature in an acceptable range.
Mechanical load: in order to maintain the normal operation of the refrigeration system, the heat energy must be taken away by the compressor.