The room of a building receives energy from the sun during the day such that the roof temperature becomes too hot to touch at certain times of the day. For a roof-surface temperature of 65°C and an ambient air temperature of 20°C, determine the convective heat transfer 2 coefficient (in W/m¯-K), if the roof makes an angle of 45° with the vertical and has a length of 5 m. Answers: Analysis: convection °C 11 x 10 (scientific notation, 6 decimal places) Nu = 2 h = W/m -K >

The room of a building receives energy from the sun during the day such that the roof temperature becomes too hot to touch at certain times of the day. For a roof-surface temperature of 65°C and an ambient air temperature of 20°C, determine the convective heat transfer 2 coefficient (in W/m¯-K), if the roof makes an angle of 45° with the vertical and has a length of 5 m. Answers: Analysis: convection °C 11 x 10 (scientific notation, 6 decimal places) Nu = 2 h = W/m -K >

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter1: Basic Modes Of Heat Transfer

Section: Chapter Questions

Problem 1.19P: 1.19 A cryogenic fluid is stored in a 0.3-m-diameter spherical container is still air. If the...

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