Heat Transfer Vacuum is generally maintained in the vapour space of an evaporator mainly to Facilitate forward feeding in multiple effect evaporation Achieve very high concentration of the final product Concentrate heat sensitive materials Get economical temperature difference by using moderate pressure steam Facilitate forward feeding in multiple effect evaporation Achieve very high concentration of the final product Concentrate heat sensitive materials Get economical temperature difference by using moderate pressure steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a heat exchanger, one transfer unit means The size of the exchanger in which heat transfer rate is 1 kcal/hr None of these A section of the exchanger in which change in temperature of one stream equals the average driving force in the section Both A and B The size of the exchanger in which heat transfer rate is 1 kcal/hr None of these A section of the exchanger in which change in temperature of one stream equals the average driving force in the section Both A and B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer An ejector is used to Remove condensate Increase pressure None of these Increase temperature Remove condensate Increase pressure None of these Increase temperature ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator. Increases May increase or decrease, depends on the vacuum Decreases Remains constant Increases May increase or decrease, depends on the vacuum Decreases Remains constant 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 Parallel flow with process stream on shell side Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side Parallel flow with process stream on shell side Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux through several resistances in series in analogous to the current flowing through several. capacitors in series resistances in series resistances in parallel none of the listed here capacitors in series resistances in series resistances in parallel none of the listed here ANSWER DOWNLOAD EXAMIANS APP
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