A. Increases
B. Decreases
C. Is not affected
D. May increase or decrease; depends on the feed
A. Increases the heating area required
B. Reduces the economy
C. Both A. and B.
D. Decreases the heating area required
A. Baffle spacing & shell diameter
B. Tube diameter & pitch
C. Viscosity, density & mass velocity of shell side fluid
D. None of these
A. Coated
B. Oily
C. Glazed & polished
D. Smooth
A. 0.35
B. 0.45
C. 0.55
D. 0.85
A. K/h0
B. 2K/h0
C. h0/K
D. h0/2K
A. Same velocity profile or equal eddy diffusivities
B. Thermal or pressure mass diffusion
C. Viscous heating or chemical reaction
D. Both B. and C.
A. 4000
B. 9000
C. 4600
D. 3000
A. There is no internal heat generation
B. Boundary surfaces are isothermal
C. Material is anisotropic
D. Constant temperature gradient exists
A. Increasing temperature
B. Decreasing temperature
C. Decreasing Reynolds number
D. None of these