Chemical Engineering :: Heat Transfer
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The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is __________ compared to the same size pipes without fins.
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Natural convection is characterised by
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Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is
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Thickness of thermal boundary layer is more compared to that of hydrodynamic boundary layer, when the value of Prandtl number is
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The critical radius of insulation for cylindrical pipe is (where, hi = heat transfer coefficient at inside of the pipe )
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The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)
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A body is called grey if the monochromatic emissivity of the body is
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In an extended surface heat exchanger, fluid having lower co-efficient
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In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is
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Grashoff number, which is defined as g . β(Ts - T∞) ρ2. L3/μ2, is proportional to the ratio of buoyancy force to __________ force.
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