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2. A circular hydrostatic pad thrust bearing of a turbine generator is designed for a thrust load of 10kN. The outside diameter is 100mm and the diameter of recess is 40mm. A pump with constant feed rate of 10mm³/s is available.

2. A circular hydrostatic pad thrust bearing of a turbine generator is designed for a thrust load of 10kN. The outside diameter is 100mm and the diameter of recess is 40mm. A pump with constant feed rate of 10mm³/s is available.

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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2. A circular hydrostatic pad thrust bearing of a turbine generator is designed for a thrust load of 10kN. The outside diameter is 100mm and the diameter of recess is 40mm. A pump with constant feed rate of 10mm /s is available. a) Select the absolute viscosity of mineral oil such that film thickness does not drop below 100 um. b) Calculate the oil pressure in recess. c) Calculate the film stiffness. d) Assuming that the generator running at 750 rpm, calculate the frictional torque absorbed by the bearing. e) Calculate the power loss due to viscous friction and also due to pumping.
Transcribed Image Text:2. A circular hydrostatic pad thrust bearing of a turbine generator is designed for a thrust load of 10kN. The outside diameter is 100mm and the diameter of recess is 40mm. A pump with constant feed rate of 10mm /s is available. a) Select the absolute viscosity of mineral oil such that film thickness does not drop below 100 um. b) Calculate the oil pressure in recess. c) Calculate the film stiffness. d) Assuming that the generator running at 750 rpm, calculate the frictional torque absorbed by the bearing. e) Calculate the power loss due to viscous friction and also due to pumping.
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