Chemical Heat Transfer

A. St = f/2
B. St = f/4
C. St = 4f
D. St = f1/2

A. Total condenser
B. Vacuum evaporator
C. Partial condenser
D. Double pipe heat exchanger

A. The heat transfer rate is low in view of the large temperature drop
B. It is difficult to maintain
C. It is not economic
D. None of these

A. Heat sensitive material can be handled
B. There is no additional cost of pumping
C. Most concentrated liquid is at highest temperature
D. Equal heat transfer co-efficients exist in various effects

A. Increases
B. Decreases
C. Does not affect
D. May increase or decrease, depends on the type of baffle

A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depending on temperature

A. 3 × 105
B. 3 × 108
C. 3 × 1010
D. 3 × 1012

A. Facilitate cleaning of the exchanger
B. Increase the heat transfer area
C. Relieve stresses caused by thermal expansion
D. Increase log mean temperature gradient

A. Bleed point
B. Vent
C. Catchall
D. Baffle

A. Smaller than
B. Greater than
C. Equal to
D. Not related with