Heat Transfer Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter) 0.2 D 0.4 D 0.5 D 0.3 D 0.2 D 0.4 D 0.5 D 0.3 D ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The local surface conductance for laminar film condensation on vertical surface is (where, t = film thickness) ∝ √t Independent of 't' ∝ 1/t ∝ t ∝ √t Independent of 't' ∝ 1/t ∝ t ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivities of most of the liquids __________ with rise in temperature. Remains unchanged Increases May increase or decrease; depends on the liquid Decreases Remains unchanged Increases May increase or decrease; depends on the liquid Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is Counter flow with process stream on shell side Parallel flow with process stream on tube side Parallel flow with process stream on shell side Counter flow with process stream on tube side Counter flow with process stream on shell side Parallel flow with process stream on tube side Parallel flow with process stream on shell side Counter flow with process stream on tube side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Double pipe heat exchangers are preferably useful, when High viscosity liquid is to be cooled Overall heat transfer co-efficient is very high A corrosive liquid is to be heated Requirement of heat transfer area is low High viscosity liquid is to be cooled Overall heat transfer co-efficient is very high A corrosive liquid is to be heated Requirement of heat transfer area is low ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Maximum water velocity in tubes of a 1-2 shell and tube heat exchanger may be around __________ metres/second. 20 10 1 30 20 10 1 30 ANSWER DOWNLOAD EXAMIANS APP
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