Q 4) (15 marks) The pipe carrying feed-water to a boiler in a thermal power plant...
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Q 4) (15 marks) The pipe carrying feed-water to a boiler in a thermal power plant has been found to vibrate violently at a pump speed of 800 rpm. In order to reduce this high vibration level, an absorber consisting of a spring of stiffness k, and a trial mass of I kg is attached to the pipe. This arrangement is found to give natural frequencies of the system at 750 rpm and 1000 rpm. Design the absorber to be attached to the pipe, i.e. calculating the values of the mass m,and stiffness k,, to keep the natural frequencies of the system outside the operating range of the pump; which is 700 rpm to 1040 rpm. For practical motivations, don't use the frequency ratio Q 4) (15 marks) The pipe carrying feed-water to a boiler in a thermal power plant has been found to vibrate violently at a pump speed of 800 rpm. In order to reduce this high vibration level, an absorber consisting of a spring of stiffness k, and a trial mass of I kg is attached to the pipe. This arrangement is found to give natural frequencies of the system at 750 rpm and 1000 rpm. Design the absorber to be attached to the pipe, i.e. calculating the values of the mass m,and stiffness k,, to keep the natural frequencies of the system outside the operating range of the pump; which is 700 rpm to 1040 rpm. For practical motivations, don't use the frequency ratio
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salution briven pump speed 8oospm NI Steyners K4 het mals mi 1 Kg 27N 6 0 3D ... View the full answer
Related Book For
Fundamentals of Thermodynamics
ISBN: 978-0471152323
6th edition
Authors: Richard E. Sonntag, Claus Borgnakke, Gordon J. Van Wylen
Posted Date:
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