# Critical Thickness of Insulation

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Consider insulation around a circular pipe as shown in the Details section. The inner temperature of the pipe is fixed at . The pipe length is taken equal to .

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Contributed by: Housam Binous and Mamdouh Al-Harthi (November 2011)

Open content licensed under CC BY-NC-SA

## Snapshots

## Details

Here is the insulation around the pipe.

The resistances to heat transfer due to insulation and environment are given by and , respectively. Their sum is effectively in the denominator of the right-hand side of the equation for in the caption.

Reference

[1] J. P. Holman, *Heat Transfer*, 10th ed., New York: McGraw-Hill, 2010.

## Permanent Citation