A. Saving of steam
B. Realisation of multiple effect economy in a single effect
C. Both A. and B.
D. None of these
Related Mcqs:
- Multiple effect evaporation accounts for___________________?
A. Steam economy
B. Lower operating costs
C. Investment economy
D. None of these - Small scale evaporation is done in a_________________?
A. Heat exchanger
B. Condenser
C. Multiple effect evaporator
D. Steam jacketed kettle - Multiple effect evaporation is generally recommended, when the______________________?
A. Large scale evaporation of liquor is needed
B. Corrosive liquids are to be concentrated
C. Fuel is cheaply available
D. Evaporation on small scale is to be done - Evaporation of 1kg of water from a solution in a single effect evaporator requires about ________________ kg of steam?
A. 0.4 – 0.6
B. 1-1.3
C. 1.8-2
D. 2 – 2.4 - Mechanical recompression evaporation is used in the production of____________________?
A. Alcohol
B. Distilled water
C. Salt
D. Fruits jam - For evaporation of viscous solution in a multiple effect evaporator, the preferred feeding scheme is _________________?
A. Forward
B. Backward
C. Parallel
D. None of these - For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it__________________?
A. Decreases the pressure drop
B. Decreases the outlet temperature of cooling medium
C. Increases the overall heat transfer coefficient
D. None of these - A multiple effect evaporator as compared to a single effect evaporator of the same capacity has _________________?
A. Lower heat transfer area
B. Lower steam economy
C. Higher steam economy
D. Higher solute concentration in the product - Tube expansion allowances exist in _____________ heat exchanger?
A. Multipass fixed tube sheet
B. U-tube
C. Single pass fixed tube sheet
D. None of these - In a shell and tube heat exchanger, square pitch compared to triangular pitch__________________?
A. Gives a higher shell side pressure drop
B. Gives a lower shell side pressure drop
C. Can pack more surface area into a shell of given diameter
D. None of these
