In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) ?

Byadmin March 3, 2019August 24, 2021

In a shell and tube heat exchanger, the height of 25 percent cut baffles is equal to (where, D = inside diameter of shell) ?

A. 0.25 D
B. 0.50 D
C. 0.75 D
D. None of these

Chemical Heat Transfer

Grashoff number, which is defined as g . β (Ts – T∞) ρ2. L3/μ2, is proportional to the ratio of buoyancy force to ____________ force?

Grashoff number, which is defined as g . β (Ts – T∞) ρ2. L3/μ2, is proportional to the ratio of buoyancy force to ____________ force?

A. Viscous
B. Elastic
C. Inertial
D. None of these

Read More Grashoff number, which is defined as g . β (Ts – T∞) ρ2. L3/μ2, is proportional to the ratio of buoyancy force to ____________ force?
Chemical Heat Transfer

A BTU/hr.ft.2 °F is equal to_________________?

A BTU/hr.ft.2 °F is equal to_________________?

A. 1 kcal/hr. m2°C
B. 4.88 kcal/hr. m.2°C
C. 1 kcal/hr. m2.°K
D. None of these

Read More A BTU/hr.ft.2 °F is equal to_________________?
Chemical Heat Transfer

Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively) ?

Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively) ?

A. C/E
B. E/C
C. CE
D. 1/CE

Read More Steam consumption in kg/hr in case of an evaporator is given by (where, C & E are capacity the economy of the evaporator respectively) ?
Chemical Heat Transfer

Evaporation by thermo compression results in the _________________________?

Evaporation by thermo compression results in the _________________________?

A. Saving of steam
B. Realisation of multiple effect economy in a single effect
C. Both A. and B.
D. None of these

Read More Evaporation by thermo compression results in the _________________________?
Chemical Heat Transfer

A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?

A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?

A. 6000
B. 24000
C. 60000
D. 48000

Read More A multiple effect evaporator has a capacity to process 4000 kg of solid caustic soda per day, when it is concentrating from 10% to 25% solids. The water evaporated in kg per day is__________________?
Chemical Heat Transfer

At constant temperature, the thermal conductivities of gases _____________ with rise in pressure?

At constant temperature, the thermal conductivities of gases _____________ with rise in pressure?

A. Decrease
B. Increase
C. Remain unchanged
D. May increase or decrease; depends on the pressure

Read More At constant temperature, the thermal conductivities of gases _____________ with rise in pressure?

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