Unformatted text preview: outlet of the pump are 100 kPa and 300 kPa absolute, respectively, determine the mechanical efficiency of the pump and the temperature rise of the water due to this mechanical inefficiency. 3. Stephen Dedalus is an artist, not an engineer. He offers you $5 (or five of whatever they used in Ireland on June 16, 1904) to help him with the following pipe problem. He has a large supply of rusty 2 inch Schedule 40 steel pipe, which he wants to use for a pipeline. Because rusty metal is rougher than clean metal, he wants to know the effective roughness before laying the pipeline. To do this, he pumps water at a rate of 100 GPM through a 100 ft long section fo pipe and finds that the pressure drop is 15 psi. What is the effective pipe roughness in inches? HINT: Consider using an expression relating the roughness factor to the friction factor for fully developed turbulent flow....
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This homework help was uploaded on 04/17/2008 for the course CHE 353 taught by Professor Poehl during the Fall '07 term at University of Texas.
- Fall '07