1 BTU/hr.ft.°F is equal to _____________ kcal/hr. m.°C?
1 BTU/hr.ft.°F is equal to _____________ kcal/hr. m.°C?
A. 1.49
B. 1
C. 4.88
D. None of these
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Which type of heat exchanger is preferred for heavy heat loads ?
Which type of heat exchanger is preferred for heavy heat loads ?A. Double pipe
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C. Series and parallel set of shell and tube
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Which of the following has the lowest Prandtl number ?A. Molten sodium (a coolant used in fast breeder reactor)
B. Water
C. Transformer oil
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The equation, Nst = f/2, is the _____________ analogy?A. Colburn
B. Reynolds
C. Prandtl
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For shell and tube heat exchanger, with increasing heat transfer area, the purchased cost per unit heat transfer area___________________?A. Increases
B. Decreases
C. Remain constant
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D. d-1.8Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?
Fresh orange juice contains 12% (by weight) solids and the rest water 90% of the fresh juice is sent to an evaporator to remove water and subsequently mixed with the remaining 10% of fresh juice. The resultant product contains 40% solids. The kg of water removed from 1 kg fresh juice is__________________?A. 0.4
B. 0.5
C. 0.6
D. 0.7