A cat has a body temperature of 48 ºC. She stays inside a closed air conditioned room that has an inside wall temperature and inside air temperature of 40 and 35 ºC, respectively. The temperature of the room’s outside wall and the air outside the room are measured to be 45 and 50 ºC, respectively. The convection heat transfer coefficient between the cat and the inside air is 5 W/m2 ºC and the convection heat transfer coefficient between the outside air and outside wall is 35 W/m2 ºC. Use 0 ºC = 273.15 K to calculate the heat losses per unit area (W/m2 ) from the cat if the emissivity of the cat is 0.85.

A cat has a body temperature of 48 ºC. She stays inside a closed air conditioned room that has an inside wall temperature and inside air temperature of 40 and 35 ºC, respectively. The temperature of the room’s outside wall and the air outside the room are measured to be 45 and 50 ºC, respectively. The convection heat transfer coefficient between the cat and the inside air is 5 W/m2 ºC and the convection heat transfer coefficient between the outside air and outside wall is 35 W/m2 ºC. Use 0 ºC = 273.15 K to calculate the heat losses per unit area (W/m2 ) from the cat if the emissivity of the cat is 0.85.

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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