Abstract
INVESTIGATION FOR VARIATION OF PERFORMANCE OF A HEXAGONAL CENTRIFUGAL GOVERNOR CONTROL SYSTEM WITH ITS TREFOILS
Debarupam Gogoi*, Angshumala Kashyap, Manasi Saikia, Monti Rajkhowa and Sevika Sarmah
ABSTRACT
A mechanical centrifugal governor has application in maintaining constant speed of a turbine shaft in power plant or in automobile by fuel control. A set of experimental case studies has been carried out by plotting characteristics curve for performance analysis of a hexagonal fuel control system with its three categories namely Porter, Proell and Hartnell governor at various load conditions to find the efficient one. The reference universal governor was set as Porter, Proell and Hartnell and interpretation were studied at three different randomly selected sleeve loads 2.765 kg, 3.265 kg and 3.765 kg to affect the controlling force. At each different stage of sleeve load, the governor was run at a set of different speeds and corresponding sleeve displacements were recorded. Then from empirical formulas for governor, other parameters such as radius of rotation, height, controlling force, effort, power, and sensitivity were calculated and characteristics curves were plotted for sleeve displacement versus governor speed and controlling force, controlling force versus radius of rotation, speed versus height to check the variations. Performances were observed from controlling force curve, effort, power, and sensitivity plot. It had been observed that at lower sleeve load Porter governor is suitable and at higher sleeve load Hartnell governor is suitable as its sensitivity is more than the other two types subjected to same set of sleeve loads.
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