State laws of thermal conduction under steady state.

Solution

The laws of thermal conduction under steady state the rate of transfer of heat under steady state:

(i) is directly proportional to temperature difference (T₂ – T₂) across the ends of conductor,

(ii) is directly proportional to area of cross section A of the conductor and

(iii) is inversely proportional to the length £ of the conductor.

Combining all these laws, we get
$space space space space space space dQ over dT proportional to fraction numerator open parentheses straight T subscript 1 minus straight T subscript 2 close parentheses straight A over denominator straight ell end fraction space rightwards double arrow space dQ over dT equals straight K fraction numerator open parentheses straight T subscript 1 minus straight T subscript 2 close parentheses over denominator straight ell end fraction$
where K is constant of proportionality and is called thermal conductivity of conductor.

Some More Questions From Mechanical Properties of Fluids Chapter

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Mechanical Properties Of Fluids

State laws of thermal conduction under steady state.

Some More Questions From Mechanical Properties of Fluids Chapter

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