Design and Simulation of Performance of a Gas Turbine Compressor Running on Coal Syngas

  • Liz Wangui Jomo Kenyatta University of Agriculture and Technology
  • Hiram N. Ndiritu Jomo Kenyatta University of Agriculture and Technology
  • Benson Gathitu

Abstract

There is an increase in demand for electricity. Kenya relies heavily on hydropower as the main source of electricity. The cost of electricity in Kenya is high, it is 15 US cents per kWh as compared to South Africa which is 4 US cents per kWh. The frequency of power outages in Kenya is 33% compared to China which is 1%. Kenya imported 158 million kWh of electricity from Uganda and Tanzania in 2014. With the unveiling of laptop project for primary schools that is currently going on in Kenya, rural areas that did not have access to electricity will be connected to the national grid. This will increase the demand for electricity. In order to achieve vision 2030, more power has to be generated and at a lower cost. The electricity has to be from clean energy or renewable energy sources to reduce carbon emissions to the environment.The government has invested in geot hermal energy for power generation and this has reduced the use of gas turbines that run on fossil fuels. As of 2014, 558 M W of geothermal power had been installed. Renewable energy such as micro wind turbines, solar PV and solar water heaters are being used domestically to reduce the cost of electricity. The installation costs for these sources of renewable energy are costly and there are no proper ways of disposing them once they breakdown or they reach their life limit. In this research a compressor will  be designed and its performance simulated so as to study its effectiveness in generation of power from a syngas turbine. Syngas is obtained when organic wastes or coal is burnt in limited supply of oxygen. The design will entail blade sizing and profile development for the purpose of optimizing pressure ratio and efficiency. The performance will be simulated and optimized in ANSYS Fluent based on flow and geometric conditions. Simulation will involve solving the transport equations of flow and energy based on suitable modelling techniques to study what happens within the designed compressor.It is expected that an optimized gas turbine compressor will be developed, and inlet conditions of pressure and flowrate will influence compressor efficiency and performance. The simulation results are expected to give an insight to designers of gas turbine devices used for power generation.
Keywords   ANSYS  (American Computer-aided Engineering Software)  Fluent, Syngas , TPM (Tiny Particulate Matter), PM (Particulate  Matter)
Published
Sep 25, 2017
How to Cite
WANGUI, Liz; NDIRITU, Hiram N.; GATHITU, Benson. Design and Simulation of Performance of a Gas Turbine Compressor Running on Coal Syngas. Proceedings of Sustainable Research and Innovation Conference, [S.l.], p. 93-97, sep. 2017. ISSN 2079-6226. Available at: <http://sri.jkuat.ac.ke/ojs/index.php/proceedings/article/view/582>. Date accessed: 18 aug. 2018.