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Tuesday, October 23, 2012

DESIRABLE PROPERTIES OF A REFRIGERANT

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1.     Low boiling point (otherwise operation at high vacua becomes a necessity)
2.     Low condensing pressure (to avoid heavy machine plant scantling and reduce the leakage risk)
3.     High specific enthalpy of vaporisation ( to reduce the quatity of refrigerants in circulation and lower machine speeds, sizes etc.)
4.     Low specific volume in vapour state (reduces size and increases efficiency)
5.     High critical temperature (temperature above which vapour cannot be condensed by isothermal compression)
6.     Non corrosive and non solvent (pure and mixed)
7.     Stable under working conditions
8.     Non flammable and non explosive
9.     No action with oil ( the fact that most refrigerants are miscible may be advantageous e.e. the removal of oil films, lowering pour points etc, provided separators are fitted
10.  Easy leak detect
11.  Non toxic
12.  cheap, easily stored and obtained 

3 comments:

Shasti said...

Interesting post. You explained the various properties of refrigerant.
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Gasntools said...

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Iqra Bashir said...

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