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O heat Source 140°C %3D Civen: composite wall (3 layers) poy unethane board Corerete rock w ool (15 cm, k> 0.742 W/m2 K (o,8 cm, k= 0.0397 (5 cm I Tonu te 0.0392 32°C Chposed to aiw and heat souru Emir iwitey 0.90 SoHe: 1. given conteetiye heat trans fer coefficint air 8,23 (W /m k), fnside %3D dretermine temperature o f inside air at of com posite wall transfer (neg leck heard 2. Sue thermal radiation to natural Conveetion)

O heat Source 140°C %3D Civen: composite wall (3 layers) poy unethane board Corerete rock w ool (15 cm, k> 0.742 W/m2 K (o,8 cm, k= 0.0397 (5 cm I Tonu te 0.0392 32°C Chposed to aiw and heat souru Emir iwitey 0.90 SoHe: 1. given conteetiye heat trans fer coefficint air 8,23 (W /m k), fnside %3D dretermine temperature o f inside air at of com posite wall transfer (neg leck heard 2. Sue thermal radiation to natural Conveetion)

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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O heat source : 1나0°C %3D composite wall (3 layers) 1 T ↑ pory unethane board corerete rock wool (15 cm , k> 0.742 W/m2 K (5 cm (9,8 cm, k= 0.0397 w Im? k %3D 0.0392 Tconue te =32°C CAposed to air and heat soure Emir ivity %3D =0.90 Sowe: 1. conyeetiye given heat trans fer cocfficint o fnside air 8,23 (w Imo k), %3D o f inside temperature com posite wall defermine air at end of 2. heard transfer radiation Sue to thermal (negleck conveetion) natural 3. using transfer from # 2, heart SOME mtergace temperature, inrermost wall
Transcribed Image Text:O heat source : 1나0°C %3D composite wall (3 layers) 1 T ↑ pory unethane board corerete rock wool (15 cm , k> 0.742 W/m2 K (5 cm (9,8 cm, k= 0.0397 w Im? k %3D 0.0392 Tconue te =32°C CAposed to air and heat soure Emir ivity %3D =0.90 Sowe: 1. conyeetiye given heat trans fer cocfficint o fnside air 8,23 (w Imo k), %3D o f inside temperature com posite wall defermine air at end of 2. heard transfer radiation Sue to thermal (negleck conveetion) natural 3. using transfer from # 2, heart SOME mtergace temperature, inrermost wall
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