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Heat Transfer
You have two layer of material to provide insulation. They have heat transfer co-efficient (k1>k2).
How will you obtain better insulation?



  
Total Answers and Comments: 2 Last Update: July 14, 2009     Asked by: anuragdhupiya 
  
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June 17, 2009 07:47:39   #1  
pandurangan Member Since: June 2009   Contribution: 1    

RE: Heat Transfer
The material which has lower thermal condutivity should be insulated first or the insulation should increase order of k to get effective insulation.
 
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July 13, 2009 11:47:32   #2  
gyanprakash maurya Member Since: July 2009   Contribution: 1    

RE: Heat Transfer
By applying higher insulation layer at lower surface & lower at upper surface

Q/A K1*(dT/dX)
Q/A K2*(dT/dX)
K1(DT)1+K2DT2 Q/A*X
FOR(q/A) MAX.
d(Q/A)/dX 0

 
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View Question | Asked by : sachin d. chaudhari

You have two layer of material to provide insulation. They have heat transfer co-efficient (k1>k2).How will you obtain better insulation? 
Latest Answer : By applying higher insulation layer at lower surface & lower at upper surface,  Q/A=K1*(dT/dX) Q/A=K2*(dT/dX)  K1(DT)1+K2DT2=Q/A*X  FOR(q/A) MAX. d(Q/A)/dX=0 ...


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