A. Low cost
B. High latent heat
C. Non-corrosive condensate
D. High film co-efficient
A. (ph – dh)/ph
B. (ph – dh . dt/2)/ph
C. (ph – dt)/ph
D. (ph – dh)/dh
A. 1-5
B. 20-40
C. 100-150
D. 1000-1500
A. Size, shape, orientation and surface of the packing particles
B. Density and viscosity of fluids
C. Fluid flow rates
D. All A., B. and C.
A. Lower limit of vapour velocity
B. Upper limit of the vapour velocity
C. Hole diameter of the sieve tray
D. Height of the plate spacing
A. 30°
B. 45°
C. 60°
D. 75°
A. From rolled strips formed into cylinders and seam-welded
B. By extrusion & casting into static and centrifugal molds
C. By forging a solid round, piercing it by simultaneously rotating & forcing it over a piercer
point and further reducing it by rolling gas drawing
D. Both B. and C.