Mechanical Engineering - Heat Transfer, Refrigeration and Air Conditioning - Discussion

15. 

The heat transfer by conduction through a thick sphere is same as through a thick cylinder.

[A]. True
[B]. False

Answer: Option B

Explanation:

No answer description available for this question.

Sandeep said: (Jun 28, 2013)  
Thermal resistances offered by both are different.

Rayudu Babu said: (Aug 12, 2013)  
Heat transfer by conduction depends on area, areas of sphere and cylinder are different.

Kuru said: (Aug 22, 2013)  
The area of the cylinder is 2*3.14*r*l.

The area of the sphere is 4*3.14*r^2*l.

So will get different values of heat flux.

Ashutosh Kumar said: (Dec 20, 2013)  
Simple answer is the area through which heat is transferring are different.

Ayesha said: (Feb 25, 2014)  
Sphere and cylinder area's are different.

Mrugesh said: (Mar 18, 2017)  
In cylinder, it follows logarithmic nature while in sphere it follows hyperbolic, don't it be same.

Sulochana said: (May 24, 2017)  
I think both areas of sphere and cylinder are different.

Ishom.S. said: (Jan 24, 2019)  
Regardless of the different areas, both are clearly said to be solid objects.

How else will heat move around, Would you say its by radiation or convection?

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