2. (#47ppS-37TrD) - A water tube boiler evaporated 6.05 kg of water per sec from a feed water temperature of 104.44 deg C to steam at 1241 kPa and quality of 0.97, weight of coal fuel per sec 0.57 kg, high heat value of the coal as fired, 11,800 Btu/lb Steam Properties: At 104.44 deg C h 437.78 (interpolated) h = 805.29 hfg = 1980.6 (interpolated) At 1241.1 kPa a) Determine the rate of heat absorption in kJ/kg

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Atomic diffusion in solids

In material science, diffusion can take place in solid, liquid, and gases. In solids, atomic diffusion can take place with the help of thermally activated and randomly vibrating atoms. The atomic diffusion in solids is complex and very slow in comparison to atomic diffusion in liquids and gases because the interatomic distance between the atoms is smaller in solids as compared to liquids and gases.