Modular helium reactor

Several reactors are candidates for use as a high temperature heat source for the S-I cycle. Candidates include the modular helium reactor (MHR) and pebble bed modular reactor (PBMR). One of the most thoroughly investigated candidates is the PBMR. Recent work has been performed in benchmarking the THERMIX code to the PBMR-268 design (Reitsma, 2004 Seker, 2005). 

G-3 Estimated costs for conversion of natural gas to hydrogen in plants of three sizes, current and possible future cases, with and without sequestration of C02, 202 G-4 Estimated effects of the price of natural gas on the cost of hydrogen at plants of three sizes using steam methane reforming, 204 G-5 Power cycle net efficiency (qel) and thermal-to-hydrogen efficiency (qH) for the gas turbine modular helium reactor (He) high-temperature electrolysis of steam (HIES) and the supercritical C02 (S-C02) advanced gas-cooled reactor HTES technologies, 212... 

G-6 The energy needs for hydrogen production by the gas turbine modular helium reactor (He cycle) high-temperature electrolysis of steam (HIES) and the supercritical C02 (S-C02 cycle) advanced gas-cooled reactor HIES technologies, 213... 

LaBar, M.P. 2002. The Gas-Turbine Modular Helium Reactor A Promising Option for Near-Term Deployment. In Proceedings of International Congress on Advanced Nuclear Power Plants, June, Hollywood, Fla. La Grange Park, 111. American Nuclear Society. 

Estimating the cost of electricity and hydrogen from a Modular Helium Reactor... 

Rothwell, G.S. (2005), Can the Modular Helium Reactor Compete in the Hydrogen Economy Stanford Institute for Economic Policy Research, Stanford University, siepr. Stanford. edu/home. html... 

M. Richards, et al., Tlicrmal Hydraulic Design of a Modular Helium Reactor core operating at 1000 Coolant Outlet Temperature , Proceedings of NUTHOS-6 (2004). 

Recent evaluations have shown hydrogen can be produced with high efficiency, safely, economically, and without the emission of greenhouse gases using the modular helium reactor (MHR) coupled to the SI thermochemical water splitting process and HTE [2]. These concepts are referred to as the Sl-based H2-MHR and the HTE-based H2-MHR, respectively, and are described in this paper. 

M. Richards et al., The H2-MHR Nuclear Hydrogen Production Hsing the Modular Helium Reactor, Proceedings of ICAPP 05, Seoul, Korea, May 15-19, 2005, Paper 5355. 

M. Richards, A. Shenoy, Y. Kiso, N. Tsuji, N. Kodochigov, and S. Shepelev Thermal Hydraulic Design of a Modular Helium Reactor Core Operating at 1 000°C Coolant Outlet Temperature, Proceedings of the 6 International Conference on Nuclear Thermal Hydraulics, Operations and Safety (NUTHOS-6), October 4-8, 2004, Nara, Japan, Atomic Energy Society of Japan, Tokyo, Japan (2004). 

E. Harvego et al., Hydrogen Production Using the Modular Helium Reactor," Proceedings of... 

A follow-up design is given in the GT-MHR (Modular Helium Reactor) (see also section 4.7.2.) with a higher power output of 600 MW(th). A standard plant is planned consisting of four of those units. Helium inlet/outlet temperatures are 485 and 850 °C, respectively. The cycle efficiency is predicted to be 47 % [51]. Follow-on evaluations which need to be done include the study of transient response of plant components to normal and off-normal events, impact of turbine contamination, and confirmation of plant efficiency [47]. 

SHENOY, A., Hydrogen Production Using Modular Helium Reactor, (30th Inter-society Energy Conversion Eng. Conf., Orlando, 1995). 

SHENOY, A., Modular Helium Reactor for Non-Electric Applications, Non-Electric Applications of Nuclear Energy, (Advisory Group Meeting, Jakarta, Indonesia,... 

Modular Helium Reactor (GT-MHR)", 4th Technical Conference of the Nuclear Novgorod, Russia. 

Dunn, T. D., L. J, Lommers and V. E. Tangirala, Preliminary Safety Evaluation of the Gas Turbine-Modular Helium Reactor (GT-MHR), GA-A21633, Presented at the International Topical Meeting on Advanced Reactor Safety, April 17-21,1994, Pittsburgh, PA, USA. 

Utility Industry Review of Design Progress on the Gas Turbine-Modular Helium Reactor, EPRI Report, September 1995. 

Evaluation of the Gas Turbine Modular Helium Reactor", DOE-HTGR-90380, December... 

F.A. Siiady, A.J. Neylan and W.A. Simon, "Design Status of the Gas Turbine Modular Helium Reactor (GT-MHR)", GA-A21768, GA Project 9866, June 1994. 

General Atomics, 1996, Gas Turbine-Modular Helium Reactor (GT-MHR) Conceptual Design Description Report, General Atomics Report 910720, San Diego, California, Rev. 1, July. 

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