PS3_2.006S08 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY 2.006...

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v2 2.006F08 1 MASSACHUSETTS INSTITUTE OF TECHNOLOGY 2.006 Thermal Fluids II Problem Set 3 Issued: Friday, February 21, 2008 Due: Thursday, February 28, 2008 Problem 0 Please read the White Chapter 7, review course notes Chapter 9. Problem 1 The water head, H, delivered by a given pump is related to the volumetric flow rate, ˙ ± , by the relation H = 30 ± 750 ˙ ² 2 where the head is measured in meters and the volumetric flow rate is measured in m 3 /s. A valve is placed across the input and output of the pump to control the flow as shown in the figure above. The total length of the 10 cm ID smooth pipe (an internal rms roughness of 10 microns) connecting to the control valve to the suction and discharge ports of the pump is 1.5 m. The elbows and the entrance loss into the bypass line have loss coefficients of 0.2. (Are there other minor losses that need be considered?) The useful control range of the valve results in a K-value that can be varied from 1 to 20 based on the flow in the bypass pipe. The valve can also be closed. We strongly recommend the use of a spreadsheet or a numerical package of your choice to solve this problem.
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This note was uploaded on 10/06/2011 for the course MECHANICAL 2.006 taught by Professor Blah during the Spring '08 term at MIT.

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PS3_2.006S08 - MASSACHUSETTS INSTITUTE OF TECHNOLOGY 2.006...

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