Insulation of Cooling Systems

Cooling systems and insulation thickness

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.

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 systems should be made with micro-cellular cross-linked polyethylene foam with low water vapor diffusion.

Related Topics

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

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