Methods of Refrigeration
Non-Cyclic Refrigeration
In non-cyclic refrigeration, cooling is of spaces is accomplished by melting ice or by subliming dry ice (frozen carbon dioxide). These methods are used for small-scale refrigeration such as in laboratories and workshops, or in portable coolers.
Ice owes its effectiveness as a refrigeration agent to its constant melting point of 0 °C (32 °F). In order to melt, ice must absorb 333.55 kJ/kg (approx. 144 Btu/lb) of heat. Food and other perishables that are maintained at this temperature or just a little bit above have an increased storage life.
Solid carbon dioxide quickly changes from a solid to a vapor phase at a temperature of -78.5 °C (-109.3 °F), and is therefore effective for maintaining products at low temperatures during the period of melting. Where the cooling agent evaporates and is then vented into a space this is known as total loss refrigeration.
Cyclic refrigeration
This consists of a refrigeration cycle, where heat is removed from a low-temperature space or source and rejected to a high-temperature sink with the help of external work
CRS Refrigeration Solutions
CRS provides a comprehensive set of solutions for refrigeration needs that any potential customer might have.
These include:
- Refrigerated containers
- Portable blast freezers
- Pharmaceutical refrigeration
- Meat rail portable storage
- Mobile bars
- Cold storage containers
- Remote temperature monitoring systems
