A refrigerator door of area 0.6 sq.m consists of 25 mm of insulation on top of a thin metal sheet. The film heat transfer coefficients inside and outside the refrigerator are 10.0 and 15.0 W m-2K -1 , respectively, and the thermal conductivity of the insulation is 0.25 W m-1K -1 . If the working temperature of the refrigerator is 0oC and ambient temperature is 20oC, determine the heat flow through the refrigerator door and the temperature of the inside surface of the door.
A refrigerator door of area 0.6 sq.m consists of 25 mm of insulation on top of a thin metal sheet. The film heat transfer coefficients inside and outside the refrigerator are 10.0 and 15.0 W m-2K -1 , respectively, and the thermal conductivity of the insulation is 0.25 W m-1K -1 . If the working temperature of the refrigerator is 0oC and ambient temperature is 20oC, determine the heat flow through the refrigerator door and the temperature of the inside surface of the door.
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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Question
A refrigerator door of area 0.6 sq.m consists of 25 mm of insulation on top of a thin metal sheet.
The film heat transfer coefficients inside and outside the refrigerator are 10.0 and 15.0 W m-2K
-1
,
respectively, and the thermal conductivity of the insulation is 0.25 W m-1K
-1
. If the working
temperature of the refrigerator is 0oC and ambient temperature is 20oC, determine the heat flow
through the refrigerator door and the temperature of the inside surface of the door.
Transcribed Image Text:3. A refrigerator door of area 0.6 sq.m consists of 25 mm of insulation on top of a thin metal sheet.
The film heat transfer coefficients inside and outside the refrigerator are 10.0 and 15.0 W m²K',
respectively, and the thermal conductivity of the insulation is 0.25 W m''K'. If the working
temperature of the refrigerator is 0°C and ambient temperature is 20°C, determine the heat flow
through the refrigerator door and the temperature of the inside surface of the door.
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