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Insulation of Cooling Systems

Cooling systems and insulation thickness.

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To avoid

  • heat gain and reduced efficiency of cooling systems
  • condensation of water on surfaces and potential corrosion problems

- pipes in cooling systems should always be insulated.

The insulation thickness of chilled water, refrigerant and brine systems should not be less than indicated below.

Insulation of Cooling Systems
SystemOperation TemperaturePipe Size (inches)
< 1"1 1/4" - 2"2 1/2" - 4"5" - 6"> 8"
(oF)(oC)Insulation Thickness (inches)
Chilled Water 40 - 55 4 - 12 0.5 0.75 1.0 1.0 1.0
Refrigerant < 40 < 4 1.0 1.5 1.5 1.5 1.5
Brine < 40 < 4 1.0 1.5 1.5 1.5 1.5
  • 1 inch = 25.4 mm

Insulation of a cold system should be made with micro-cellular cross-linked polyethylene foam with low water vapor diffusion.

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Related Topics

  • Insulation

    Heat transfer and heat loss from buildings and technical applications - heat transfer coefficients and insulation methods to reduce energy consumption.

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