EXAMIANS
In case of heat flow by conduction for a cylindrical body with an internal heat source, the nature of temperature distribution is
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Forced circulation evaporators are normally used for concentrating liquids having
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Among liquids, water has a comparatively high value of thermal conductivity, due to its
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The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe whose surface temperature remains constant is
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Nusselt number (for forced convection heat transfer) is a function of the __________ number.
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At constant temperature, the thermal conductivities of gases __________ with rise in pressure.
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Heat transfer by conduction results due to the transfer of free electrons, kinetic energy & vibrational energy from one molecule to another. Conduction heat transfer can not take place
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In a laboratory test run, the rate of drying was found to be 0.5 x 10-3 kg/m².s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m²/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is
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Boiling point elevation of a solution of NaOH
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For what value of Prandtl number, the Col-burn analogy is valid ?
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