Looks Fam

Question 1

Pump draws a solution of sg 1.84 from a storage tank through a 3” schedule 40 steel pipe

Answer 1

6905 lbf/ft2 (pressure must be developed)

Theo HP = 1.95 hp

Question 2

Hydrogen is pumped from a reservoir at 2 MN/m2 through a clean horizontal mild steel pipe 50 mm diameter, 500 mm long

Answer 2

Flow rate - 0.213 kg/s

Effective rate - 113 kW

Question 3

600 L/s of water at 320 K is pumped in a 40 mm ID pipe through a length of 150 m in a horizontal direction

Answer 3

Power to be delivered - 128 kW

Question 4

A centrifugal fan is used to take flue gas at rest and at a pressure of 29.0 in Hg

Answer 4

Power need to more 10000 STD ft3/min - 63.482 hp

Question 5

An orifice meter with the flange taps is to be installed in a 100 mm line to measure the flow of water.

Answer 5

Diameter that should be specified if the max Mano reading is 1.25 m - 41 mm
Power to operate the meter at full load - 1.80 hp

Question 6

A liquid with no appreciable elevation of boiling point is concentrated in a triple effect evaporator.

Answer 6

T1 = 381.45
T2 = 363.19
T3 = 325

Question 7

A sginle effect evaporator is used to concentrate 7kg/s of a solution from 10 to 50% solids.

Answer 7

A = 68.6 m2
S= 6.47 kg/s

Question 8

Saturated steam leaving an EVAP at ATM pressure is compressed by means of saturated steam at 1135 KN/m2

Answer 8

n= 0.55

Question 9

A single effect evap operates at 13 Kn/m2. What will be the heating surface necessary to concentrate 1.25 kg/s of 10 % caustic soda to 41%

Answer 9

A= 106.6 m2

Question 10

A double effect forward feed evap is required to give a product of consisting 30% crystals and mother liquor containg 40% by mass of dissolved solids

Answer 10

A = 5 m2
P= 1 atm

Question 11

Single effect evap is to concentrate 20000 lbf/h of a 20 percent solution of sodium hydroxide to 50% solides

Answer 11

Steam consumed = 15330.29
Economy = 0.78
A= 948 ft2