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