Question 474: Thermodynamics & KTG

Question

A heat source at T = 103 K is connected to another heat reservoir at T = 102 K by a copper slab which is 1 mthick. Given that the thermal conductivity of copper is 0.1 WK–1m–1, the energy flux through it in the steady state is -

Accepted Answer

$$\left( {{{dQ} \over {dt}}} \right) = {{kA\Delta T} \over \ell }$$
$$ \Rightarrow $$  $${1 \over A}\left( {{{dQ} \over {dt}}} \right) = {{\left( {0.1} \right)\left( {900} \right)} \over 1} = 90W/{m^2}$$

Answer

200 Wm$$-$$2

Answer

65  Wm$$-$$2

Answer

120 Wm$$-$$2

Answer

90 Wm$$-$$2

Thermodynamics & KTG

A heat source at T = 103 K is connected to another heat reservoir at T = 102 K by a copper slab which is 1 mthick. Given that the thermal conductivity of copper is 0.1 WK–1m–1, the energy flux through it in the steady state is -

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