TY - CONF
T1 - DESIGN AND MANUFACTURING CHALLENGES OF A MICROTURBINE WHEEL
AU - Hosseini, Seyed Vahid
AU - Gamil, Abdelaziz
AU - Soodani, Sara
AU - Nikolaidis, Theoklis
AU - Madani, Seyed Hossein
AU - Chen, Yong
AU - Chizari, Mahmoud
N1 - Funding Information:
This project has been supported by the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 801604 and the UK Department of Business, Energy, and Industrial Strategy (BEIS) under the scheme of Energy Entrepreneurs Fund phase 3. The authors would like to acknowledge the support and express their appreciation to all partners of these projects.
Publisher Copyright:
Copyright © by the Author.
PY - 2023
Y1 - 2023
N2 - Micro gas turbine (MGT) is a core technology in many hybrid and integrated power systems to address the low-emission future aviation and decentralisation of energy generation. To achieve a high power-to-weight ratio as well as lowering the required maintenance, a new compact configuration with an air-bearing compartment was developed to build a 2 kW micro gas turbine. Designing a turbine wheel faced a multidisciplinary problem with many inputs and constraints in aerodynamic, heat transfer, strength, and manifesting aspects. To meet all requirements of these aspects, a design procedure is proposed in this paper. Since the manufacturing process affects the performance and life of the system, several processes, including casting, additive manufacturing (AM) and machining of the turbine wheel with different materials, were carried out, and the structural strength and performance of the components were investigated in this study. The prototype was tested experimentally to prove its performance and validate the concept. The cast wheel demonstrated both the required performance of 2 kW power output of the MGT in turbine inlet temperature of 1200 K and rotational speed of 170 krpm. However, the machined and additive manufactured samples for low-temperature/low-speed off-design conditions did not withstand structurally and called for a redesign or change in conditions.
AB - Micro gas turbine (MGT) is a core technology in many hybrid and integrated power systems to address the low-emission future aviation and decentralisation of energy generation. To achieve a high power-to-weight ratio as well as lowering the required maintenance, a new compact configuration with an air-bearing compartment was developed to build a 2 kW micro gas turbine. Designing a turbine wheel faced a multidisciplinary problem with many inputs and constraints in aerodynamic, heat transfer, strength, and manifesting aspects. To meet all requirements of these aspects, a design procedure is proposed in this paper. Since the manufacturing process affects the performance and life of the system, several processes, including casting, additive manufacturing (AM) and machining of the turbine wheel with different materials, were carried out, and the structural strength and performance of the components were investigated in this study. The prototype was tested experimentally to prove its performance and validate the concept. The cast wheel demonstrated both the required performance of 2 kW power output of the MGT in turbine inlet temperature of 1200 K and rotational speed of 170 krpm. However, the machined and additive manufactured samples for low-temperature/low-speed off-design conditions did not withstand structurally and called for a redesign or change in conditions.
KW - ADDITIVE MANUFACTURING
KW - CASTING
KW - MACHINING
KW - MICRO GAS TURBINE
KW - PROTOTYPE
KW - TURBINE WHEEL
UR - http://www.scopus.com/inward/record.url?scp=85163284389&partnerID=8YFLogxK
M3 - Paper
AN - SCOPUS:85163284389
T2 - 15th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2023, ETC 2023
Y2 - 24 April 2023 through 28 April 2023
ER -