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An iron boiler is 10 mm thick and has a ...

An iron boiler is 10 mm thick and has a heating area `2m^(2)`. The two surfaces of the boiler are at `240^(@)C` and `100^(@)C` respectively. Find the mass of the water evaporated into steam per minute. Given that latest heat of steam is `536 kcal kg^(-1)` and thermal conductivity of iron is `1.6 xx 10^(-2) kcal s^(-1) m^(-1) .^(@)C^(-1)`.

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