Refrigeration system based on ability of one substance (the absorbent) to absorb large volume amount of vapor of another substance usually the liquid refrigerant. The essential parts are absorber and a generator, expansion valve, evaporator coil, and include also analyzers or bubble column, rectifier, heat exchangers, liquid pre coolers for better efficiency performance factor.
This type is usually used on domestic household refrigerator.

Advantages of Absorption System over Compression System

  1. saving in operating cost using low pressure steam
  2. less heavy electrical load
  3. automatic start/stop procedure
  4. simple in operation and maintenance
  5. less space required for large tonnage.
  6. less fewer moving parts
  7. more efficiency at all ranges of reduced load
  8. best application where waste heat or low-pressure steam available


Related Terms

CASCADE TYPE DIRECT COOLING PLANT

Plants of this type fitted to some liquefied gas carriers for cargo reliquefaction duties where a refrigerant gas is used to give final cooling and condensation of the cargo vapors.

MECHANICAL REFRIGERATION

The removal of heat by utilizing a refrigerant subjected to cycles of refrigerating thermodynamics and employing a mechanical compressor.

SOLID STATE HALOGEN LEAK DETECTOR

An electronic leak detector for all halogen-related refrigerants.

ABSORBER

That part of the low side of an absorption system, used for absorbing vapor refrigerant.

ACID CONDITION IN SYSTEM

Condition in which refrigerant or oil in a system, is mixed with vapor and fluids that are acidic in nature.

REVERSING VALVE

Device used to reverse direction of the refrigerant flow depending upon whether heating or cooling is desired.

SADDLE VALVE

Valve body shaped so it may be silver brazed or clamped onto a refrigerant tubing surface.(TAP-A-LINE)

CARBON DIOXIDE

Compound of carbon and oxygen (CO2) which is sometimes used as a refrigerant. Refrigerant number is R-744.

REFRIGERANT CHARGE

Amount of refrigerant placed in a refrigerating unit.

CHEMICAL REFRIGERATION

System of cooling using a disposable refrigerant. Also called an expendable refrigerant system.

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