Thermal insulation of air conditioning system
1 Answer

Thermal insulation in air conditioning system :-

  • Thermal insulation in air conditioning system is primarily used to reduce heat gain or heat loss from piping. Other factors include preventing the icing of water vapor and condensation on cold surface.

  • Water vapor from the air or surrounding area must be kept from entering the cold side of the pipe to prevent condensation of moisture from the air on the outside of the cold piping.

  • Condensation can cause damage to surrounding areas such as carpet or other furnishing. Hence, the insulation must also acts as a vapor barrier.

  • It also helps to reduce the noise level, absorb the vibration generated by the system, prevent the spread of fire and adding structural strength to the walls or ceilings.

  • Well chosen material can also protects the piping being insulated from harsh environmental conditions such as UV light, salt, water, dusts, chemicals and oil. Other characteristics may include the ability to inhibit the growth or viruses, bacteria and fungi.

Insulation Characteristics :-

  • Low thermal conductivity.

  • Reasonable strength

  • Non-combustible.

  • Resistance to Fungi such as one that is based on ASTM G21 standard.

  • Excellent resistance to ozone

  • Excellent resistance to UV.

  • Does not deteriorate or rot over time.

There are 5 common types of insulation used in air conditioning as follow:

  1. Closed Cell Insulation
  2. Polyurethane (PU) Insulation
  3. Fiberglass Insulation
  4. Polyethylene (PE) Insulation
  5. Rockwool Insulation
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