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References

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Conduction through composite cylinder and sphere

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The convective resistance is given by

a:

R_{th} = \frac{kA}{b}

Explanation

Explanation

b:

R_{th} = \frac{1}{hA}

Explanation

Explanation

c:

R_{th} = hA

Explanation

Explanation

d:

R_{th} = \frac{b}{kA}

Explanation

Explanation

The conductive resistance of sphere is given by

a:

R_{th} = \frac{r_2 - r_1}{4πkr_1r_2}

Explanation

Explanation

b:

R_{th} = \frac{b}{kA}

Explanation

Explanation

c:

R_{th} = \frac{4πkr_1r_2}{r_2 - r_1}

Explanation

Explanation

d:

R_{th} = \frac{kA}{b}

Explanation

Explanation

The conductive resistance of cylinder is given by

a:

R_{th} = \frac{r_2 - r_1}{4πkr_1r_2}

Explanation

Explanation

b:

R_{th} = \frac{kA}{b}

Explanation

Explanation

c:

R_{th} = \frac{1}{hA}

Explanation

Explanation

d:

R_{th} = \frac{ln(r_2/r_1)}{2πLk}

Explanation

Explanation

The conductive resistance of infinite slab is given by

a:

R_{th} = \frac{b}{kA}

Explanation

Explanation

b:

R_{th} = \frac{r_2 - r_1}{4πkr_1r_2}

Explanation

Explanation

c:

R_{th} = \frac{1}{hA}

Explanation

Explanation

d:

R_{th} = \frac{ln(r_2/r_1)}{2πLk}

Explanation

Explanation

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