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Chemical Engineering Heat Transfer Difficulty: Medium

For an ideal black body

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An upper limit of oil content is limited to about __________ percent for achieving efficient and satisfactory level of wax sweating. When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the Working principle of bimetallic thermometers is difference in linear co-efficient of thermal expansion of two strips of different metals welded together. Which of the following has the maximum thermal co-efficient of linear expansion? The thermal radiative flux from a surface of emissivity = 0.4 is 22.68 kW/m 2 . The approximate surface temperature (K) is (Stefan-Boltzman constant = 5.67 × 10 -8 W/m 2 .K 4 ) Tube side heat transfer co-efficient for turbulent flow of liquid through tubes is proportional to