Abstract
A modular high-temperature gas-cooled reactor (HTGR) coupled with a closed cycle helium gas turbine is expected as one of the promising power generation plants due to inherent safety and economics. Effects of main design parameters, particularly gas pressure, on cycle thermal efficiency and power generation cost were examined for the block-type HTGR power plant. A previous design of 600 MWt reactor with inlet and outlet temperatures of 460 and 850°C and a gas pressure of 6 MPa was assumed as a reference design. A computer analysis program combining a core thermal design and a gas turbine cycle was developed. From the results of parametric analyses regarding both the pressure and the fuel channel diameter based on this program, the reactor pressure vessel (RPV) cooling flow ratio of 1% was clarified to be sufficient. With increasing pressure, pressure drop decreased, and consequently, a higher cycle thermal efficiency and a lower power generation cost were achieved. Namely, it was clarified that an optimal pressure exists at around 8 MPa, which is different from the existing generally employed pressure of 6 or 7 MPa. In addition, the effects of fuel cost escalation were examined.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Transactions of the Atomic Energy Society of Japan
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
