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Process Equipment and Plant Design

Process Equipment and Plant Design
Joint efficiency (J) for a seamless pipe is

1.2
1
0.85
< 0.5

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Process Equipment and Plant Design
The absorption factor is defined as (where, S₁ = slope of the equilibrium curve, S₂ = slope of the operating line)

S₁.S₂
S₁/S₂
1/S₁.S₂
S₂/S₁

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Process Equipment and Plant Design
The circumferential (hoop) stress in a thin walled cylinderical vessel under internal pressure is

pd/4t
pd/3t
pd/t
pd/2t

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Process Equipment and Plant Design
The ratio for the rate of washing to the final rate of filtration in a washing type of plate and frame filter is

0.25
1.25
0.75
0.5

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Process Equipment and Plant Design
Le/D for a Tee (used as elbow, entering branch) would be

Less than that for Tee (used as elbow, entering run)
More than that for Tee (used as elbow, entering run)
Both B and C
Around 90

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Process Equipment and Plant Design
In a rotary drier, the average retention time of solid is(where Z = length of the drier, metres ρ = apparent solid density, kg/m³ L = flow rate of dry solids, kg/see. m² drier cross-section H = hold up of solid.)

Z.H/L.ρ
L/Z.H.ρ
H.ρ/L
Z.H.ρ/L

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