ANALYSIS OF SELF-SUSTAINABLE MINI GAS TURBINE ENGINE FOR DOMESTIC PURPOSE

Abstract

The power density of hydrocarbon fuels is 100 times as compared to other modes power producing devices at micro level. The battery system is very inefficient when it comes to provide enough power to most portable devices like humanoid robot, mobile machines and mechanism to aid humanoid motion such as future armor to soldiers (exoskeleton), these mini gas turbines can be very handy replacement power source. It can also be used as aided power in various industrial and research applications. Improved combustion efficiency may broaden our area to experiment even with bio fuels. A Tata indica vista turbocharger model k35 has been used in fabrication for gas turbine engine having impeller diameter of 25.6 mm. a reverse flow combustion chamber made to stall between the turbo compressor and turbo turbine. With help of Rota meter fuel is varied from 0.00018625kg/sec to 0.000415kg/sec and different set of pressures and temperatures data were recorded at locations of compressor outlet, combustor outlet and turbine outlet. It has been observed that the engine was well sustained within the limits of fuel above mentioned, and we have been able to achieve improved pressure ratios on increasing the fuel supply. The results showed us that the combustion intensity of burner was settled between 1030 KW/m³-atm. to1948 KW/m³atm ηcycle ,energy conversion efficiency Obtained from 4.75% to 9%. Power efficiency has come out as ~90 % which is very exciting for further improvement of current set up. For further improvement we can reduce the volume of combustion chamber to increase combustion intensity and hence improving equivalence ratio and better sustainability even at very low-level supply of fuel.