11. 'Fouling factor' used in the design of a multipass shell and tube heat exchanger is a
12. In a gas-liquid shell and tube heat exchanger, the
13. In SI units, thermal conductivity is expressed in
14. With increase in temperature, the thermal conductivity of most liquids
15. Which of the following has the lowest overall heat transfer co-efficient?
16. Pick out the correct statement.
17. Value of Prandtl number for water ranges from
18. 1 BTU/hr.ft.°F is equal to __________ kcal/hr. m.°C.
19. A process stream of dilute aqueous solution flowing at the rate of 10 Kg.s-1 is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s-1. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is
20. Low thermal conductivity of heat insulating materials is due to its
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