7-5 A pump is to raise 1.9 m/min against a static head of 25 m through a pipe 365 m long. Determine the most economical pipe size, (that which gives minimum annual cost). Power costs 4 cents per kWh, the pump operates 13 hours per day, interest is 8 percent, annual depreciation is 2.5 percent, the cost of installed pipe is $30 for 150 mm, $36 for 200 mm, $48 for 250 mm, $54 for 300 mm, and $60 for 350 mm per mcter of length. Assume overall pumping efficiency of 60 percent.

7-5 A pump is to raise 1.9 m/min against a static head of 25 m through a pipe 365 m long. Determine the most economical pipe size, (that which gives minimum annual cost). Power costs 4 cents per kWh, the pump operates 13 hours per day, interest is 8 percent, annual depreciation is 2.5 percent, the cost of installed pipe is $30 for 150 mm, $36 for 200 mm, $48 for 250 mm, $54 for 300 mm, and $60 for 350 mm per mcter of length. Assume overall pumping efficiency of 60 percent.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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