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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.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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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.

 

 

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