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Process Equipment and Plant Design

Process Equipment and Plant Design
Cooling water fouling factors vary in the range of 0.001 to 0.003

(BTU/hr.ft² . °F)⁻¹
(kcal/hr. m. °C)⁻¹
(kcal/hr.m² .°C)⁻¹
(W/m².°K)⁻¹

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Process Equipment and Plant Design
It is not desirable to design a heat exchanger for LMTD correction factor, FT, of less than

0.55
0.99
0.8
0.95

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Process Equipment and Plant Design
Safety valves are provided in chemical equipments to guard against excessive

Turbulence
Temperature
Pressure/pressure fluctuation
Noise

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Process Equipment and Plant Design
A minimum clearance of about __________ mm is maintained between the distillation column wall and the bubble cap.

38
19
76
95

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Process Equipment and Plant Design
An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

An increase in relatived volatility for rectification columns
Decrease in gas solubility for absorbers
All of these
An increase in liquid viscosity

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Process Equipment and Plant Design
__________ of water makes it a widely used coolant in heat exchangers.

High specific heat
Low corrosiveness
Low viscosity
Low dirt factor

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