Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

Process Equipment and Plant Design
Tube wall thickness depends on the cor-rosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than __________ mm outside diameter is generally not recommended for fouling fluids.

38

16

19

28

38

16

19

28

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Process Equipment and Plant Design
An underdesigned steam trap will

Back up condensate and cause water hammer in steam line

Waste steam

None of these

Destroy itself of acceleration wear due to rapid recycling

Back up condensate and cause water hammer in steam line

Waste steam

None of these

Destroy itself of acceleration wear due to rapid recycling

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Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

About 0.33 times

Less

Same

About 3 times

About 0.33 times

Less

Same

About 3 times

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Process Equipment and Plant Design
In perforated plate towers, the

Pressure drop is less compared is similar bubble cap towers

Hole sizes may be around 1/8" or 3/16"

All of these

Total hole area may be around 6 to 15% of tower cross-sectional area

Pressure drop is less compared is similar bubble cap towers

Hole sizes may be around 1/8" or 3/16"

All of these

Total hole area may be around 6 to 15% of tower cross-sectional area

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Process Equipment and Plant Design
In a vertical short tube evaporator (Calendria type), the

Area of central downtake is equal to 40 to 100% of total cross-sectional area of the surrounding tube

Tube dia of 2.5-7.5 cms, tube length of 75-200 cms and cylinderical drum dia of 1-6 metres are normally used

Liquor is inside the tube while the steam is outside the tube

All of these

Area of central downtake is equal to 40 to 100% of total cross-sectional area of the surrounding tube

Tube dia of 2.5-7.5 cms, tube length of 75-200 cms and cylinderical drum dia of 1-6 metres are normally used

Liquor is inside the tube while the steam is outside the tube

All of these

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Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

(ph - dh . dt/2)/ph

(ph - dt)/ph

(ph - dh)/dh

(ph - dh)/ph

(ph - dh . dt/2)/ph

(ph - dt)/ph

(ph - dh)/dh

(ph - dh)/ph

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Process Equipment and Plant Design

Process Equipment and Plant Design An underdesigned steam trap will

Process Equipment and Plant Design Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Process Equipment and Plant Design In perforated plate towers, the

Process Equipment and Plant Design In a vertical short tube evaporator (Calendria type), the

Process Equipment and Plant Design A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by

Process Equipment and Plant Design
An underdesigned steam trap will

Process Equipment and Plant Design
Heat transfer co-efficient for a horizontal condenser as compared to a vertical condenser operating under similar conditions is

Process Equipment and Plant Design
In perforated plate towers, the

Process Equipment and Plant Design
In a vertical short tube evaporator (Calendria type), the

Process Equipment and Plant Design
A perforated plate has holes of diameter dh arranged in a pitch ph. Each hole has a tube of I.D. dt passing through it. The ligament efficiency is given by