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SS2: PHYSICS - 2ND TERM

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  1. Mechanical Energy & Machines | Week 1
    5 Topics
    |
    1 Quiz
  2. Temperature & its Measurement I | Week 2
    3 Topics
    |
    1 Quiz
  3. Temperature & its Measurement II | Week 3
    7 Topics
    |
    1 Quiz
  4. Heat Energy Measurement | Week 4
    4 Topics
    |
    1 Quiz
  5. Latent Heat I | Week 5
    4 Topics
    |
    1 Quiz
  6. Latent Heat of Vaporisation | Week 6
    2 Topics
    |
    1 Quiz
  7. Vapour Pressure | Week 7
    7 Topics
    |
    1 Quiz
  8. Gas Laws | Week 8
    5 Topics
    |
    1 Quiz



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Topic Content:

  • Refrigerator
  • Working Principle
  • Summary
Parts of a Refrigerator
Parts of a Refrigerator.

A refrigerator is a device used for cooling and preserving food items. It consists of:

i. A compressor or pump which is used to compress and condense vapour of the refrigerant to liquid while the expansion valve allows the evaporation of highly pressurized liquid.

ii. The refrigerant is a volatile liquid that produces the cooling effect in the refrigerator. (Ammonia, ethyl chloride (Freon) and liquid carbon iv oxide).

iii. Cold compartment and cooling fins (or condenser coils): The cold compartment is surrounded by evaporator coils which give out latent heat to evaporate the refrigerant (Freon) and the cooling fins or condenser coils conduct heat away from the condensed liquid.

compressor
Compressor.
expansion valve
Expansion valve.
refrigerant
Refrigerant.
evaporator coils
Evaporator coils.
condensor coils
Condensor coils.

 

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