Three of the following statements are true, but one is false. Indicate which one is false. A) There is no critical thickness of insulation for a flat surface (plane wall). B) Insulation my increase or decrease the heat transfer from a pipe or a sphere. C) In a cylindrical pipe or a spherical shell, the additional insulation increases the conduction resistance of the insulation layer but decreases the convection resistance of the surface. D) Small bodies with high thermal conductivities and low convection coefficients are less likely to satisfy the criterion for lumped system analysis.

Three of the following statements are true, but one is false. Indicate which one is false. A) There is no critical thickness of insulation for a flat surface (plane wall). B) Insulation my increase or decrease the heat transfer from a pipe or a sphere. C) In a cylindrical pipe or a spherical shell, the additional insulation increases the conduction resistance of the insulation layer but decreases the convection resistance of the surface. D) Small bodies with high thermal conductivities and low convection coefficients are less likely to satisfy the criterion for lumped system analysis.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter42: Heat Gains And Heat Losses In Structures

Section: Chapter Questions

Problem 11RQ: If a wall is made up of four different materials, all layered one on top of the other, how will the...

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