Heat Transfer
Steam trap is used to

Condense the steam flowing in the pipeline
None of these
Stop the supply of steam
Remove water resulting from partial condensation of steam

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Heat Transfer
1000 Kg of liquid at 30°C in a well stirred vessel has to be heated to 120°C, using immersed coils carrying condensing steam at 150°C. The area of the steam coils is 1.2 m² and the overall heat transfer co-efficient to the liquid is 1500 W/m².°C. Assuming negligible heat loss to the surrounding and specific heat capacity of the liquid to be 4 kJ/kg.°C, the time taken for the liquid to reach desired temperature will be

44 min
15 min
51 min
22 min

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Heat Transfer
In a gas-liquid shell and tube heat exchanger, the

Presence of a non-condensible gas decreases the condensing film co-efficient
Gases to be heated/cooled is normally routed through the shell side, because the corrosion caused by the cooling water or steam condensate remain localised to the tubes
All of these
Gases under high pressure are routed through the tube side, because high pressure gases are corrosive in nature

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