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Process Equipment and Plant Design

In a bag filter, the pressure drop increases directly as the___________________?

Process Equipment and Plant Design /
In a bag filter, the pressure drop increases directly as the___________________?

A. Density of the gas, but is independent of the viscosity of the gas
B. Density of the gas and inversely as viscosity of the gas
C. Viscosity of the gas and inversely as density of the gas
D. None of these

In a bag filter, the pressure drop increases directly as the___________________? Read More »

Process Equipment and Plant Design

In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones; because the smaller diameter tubes ______________?

Process Equipment and Plant Design /
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones; because the smaller diameter tubes ______________?

A. Are easier to clean
B. Are less prone to fouling
C. Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D. None of these

In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones; because the smaller diameter tubes ______________? Read More »

Process Equipment and Plant Design

In a vertical short tube evaporator (Calandria type), the ______________________?

Process Equipment and Plant Design /
In a vertical short tube evaporator (Calandria type), the ______________________?

A. Tube dia of 2.5-7.5 cms, tube length of 75-200 cms and cylindrical drum dia of 1-6 metres are
normally used
B. Area of central downtake is equal to 40 to 100% of total cross-sectional area of the
surrounding tube
C. Liquor is inside the tube while the steam is outside the tube
D. All A., B. & C.

In a vertical short tube evaporator (Calandria type), the ______________________? Read More »

Process Equipment and Plant Design

Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of ____________________?

Process Equipment and Plant Design /
Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of ____________________?

A. Preventing the local overstressing of the shell around the opening
B. Reduction of discontinuity in shape at the junction
C. Making the joint leak proof
D. None of these

Any shell opening greater than 5 cms for a storage tank must be reinforced for reason of ____________________? Read More »

Process Equipment and Plant Design

The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles ?

Process Equipment and Plant Design /
The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles ?

A. To increase the residence time of shell side fluid
B. To provide support to the tube bundle
C. To reduce the induced vibration in the tubes
D. To increase the tube side heat transfer co-efficient by inducing turbulence

The centre to centre distance between two consecutive baffles in a shell and tube heat exchanger is called the baffle pitch or baffle spacing, which is more than 1/5th the I.D. of the shell. Which of the following is not a function of the baffles ? Read More »

Process Equipment and Plant Design

Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is____________________?

Process Equipment and Plant Design /
Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is____________________?

A. pD/2T
B. pD/4T
C. pD/3T
D. pD/6T

Hoop (circumferential) stress induced in a thin walled ‘Horton Sphere’ used for the storage of liquid ammonia under pressure is____________________? Read More »

Process Equipment and Plant Design