HTGR hydrogen electricity cogeneration system can employ helium gas turbine. The helium gas turbine system of HTGR can achieve approximately 1.5 times (approximately 50%) of power generation efficiency compared with steam turbine system of LWR.
We have been conducting R&Ds for compressor and maintenance technology. As for the compressor development, we have established an aerodynamic design method with a Japanese gas turbine vendor. We also achieved successful operation of axial compressor with 1/3 scale facility. Regarding the maintenance technology development, we are investigating diffusion behavior of silver in turbine alloys by experiment and simulation with the aim of developing heat resistant alloy which can reduce deposition of fission product on the turbine blade.
R&D on compressor for helium gas turbine
Diffusion test of silver to turbine blade alloy
Present study includes the result of the Development of Nuclear Heat Utilization System in FY 2005 entrusted to JAEA by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
- Reference
- S. Takada et al., Program for aerodynamic Performance Tests of Helium Gas Compressor Model of the Gas Turbine High Temperature Reactor (GTHTR300), Trans. At. Energy Soc. Japan, VOl.2, No.3, pp.291-300 (2003). (in Japanese).
- Y. Imai et al., Design Database of Helium Gas Turbine for High Temperature Gas-cooled Reactor, JAEA-Data/Code 2016-007 (2016). (in Japanese).