View Full Document

Chapter 8 - Refrigeration KEY TERMS AND CONCEPTS



View the full content.
View Full Document
View Full Document

3 views

Unformatted text preview:

Chapter 8 Refrigeration KEY TERMS AND CONCEPTS Absorption refrigeration a refrigeration cycle that uses gas as an energy resource to operate the generator It is used for food chillers and freezers Absorber a component of a refrigeration cycle absorption cycle that contains a salt solution that absorbs a vapor refrigerant then the refrigerant releases its latent heat of vaporization American Society of Heating Refrigeration and Air Conditioning Engineers ASHRAE the organization that has developed non CFC refrigerant standards they have developed a new 400 series of refrigerants that are blends of approved halocarbon refrigerants Appliance heat load the heat gain from electric lamps or fan motors in a food chiller or freezer Chiller a food storage area walk in or reach in that maintains a 40 45 F 4 4 7 2 C temperature Chlorofluorocarbon refrigerant CFC the group of refrigerants that when released to the atmosphere destroy the protective ozone layer around the earth These are currently banned around the world and must be replaced with substitute safe refrigerants Compressed air refrigeration a cooling technique that increases the pressure on air and then quickly releases the pressure of the air allowing it to expand thus absorbing heat Compressor a component of a refrigeration cycle that increases the refrigerant pressure Normal compressors are rotary centrifugal and reciprocating and are usually driven by electric motors Condenser a component of a refrigeration cycle that releases the heat absorbed by the refrigerant to the environment Condensers are usually air or water cooled Defrosting the removal of ice from an evaporator used in food chillers and freezers May be hot gas or electric resistance defrost The hot gas system circulates high pressure refrigerant gas from the compressor to the evaporator Drier a device used on a refrigeration cycle that removes water from the refrigerant Energy Management System EMS a computer controlled full computer or microprocessor



Access the best Study Guides, Lecture Notes and Practice Exams

Loading Unlocking...
Login

Join to view Chapter 8 - Refrigeration KEY TERMS AND CONCEPTS and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Chapter 8 - Refrigeration KEY TERMS AND CONCEPTS and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?