Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 03 Apr 2018 My Price 7.00

heat capacities

In a refinery 100,000 lb/h of fuel oil is to be cooled from 200°F to 100°F by heat exchange with 70,000 lb/h of cooling water that is available at 60◦F. A shell-and-tube exchanger will be used. The heat capacities are 0.6 Btu/lbm · °F for the oil and 1.0 Btu/lbm · °F for the water.

(a) Use stream energy balances to calculate the duty for the exchanger and the outlet temperature of the cooling water.

(b) Determine whether or not a 1-2 exchanger can be used for this service. If not, how many shell passes will be needed?

(c) Refer to Table 3.5 and obtain an approximate value for the overall heat-transfer coefficient. Use this value to calculate the heat-transfer surface area for the exchanger.

(d) If 3/4-in., 16 BWG tubes with a length of 20 ft are used in the heat exchanger, how many tubes will be required to supply the surface area calculated in part (c)?

Answers

Maurice Tutor
(5)
Status NEW Posted 03 Apr 2018 08:04 PM My Price 7.00

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