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Thermal Insulation Handbook for the Oil, Gas, and Petrochemical Industries by Alireza Bahadori

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1.10. Calculation of Thickness of Insulating Material Required to Prevent Condensation

The limiting condition for the formation of condensation on the surface of an insulating material occurs when the surface temperature equals the dew point temperature, θdimage, i.e., when θ2 = θd.

Q=θ1θ2R=θ1θmR+RS

image
(1.44)

Table 1.24

Cold Insulation Thickness for Energy Conservation/Condensation Prevention

Pipe or Equipment, Outside, mmNormal Insulation Thickness, mm
253850647589100114125140150
Minimum Temperature, °C
To 33.4 mm5-12-32-54-79-107-137-176-223--
48.37-7-34-54-73 ...

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