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Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
S. Morita, H. Yamada, R. Akiyama, A. Ando, H. Arimoto, K. Ida, H. Idei, H. Iguchi, O. Kaneko, S. Kubo, R. Kumazawa, K. Matsuoka, T. Minami, T. Morisaki, S. Muto, K. Narihara, K. Nishimura, S. Okamura, T. Ozaki, S. Sakakibara, C. Takahashi, K. Tanaka, J. Xu, I. Yamada
Fusion Science and Technology | Volume 27 | Number 3 | April 1995 | Pages 239-243
Helical Systems | doi.org/10.13182/FST95-A11947078
Articles are hosted by Taylor and Francis Online.
Particle confinement time τp has been obtained from measurements of poloidal and toroidal distributions of Ha and Lyman a emissions in CHS. These particle confinement times range between 1.5 and 4ms at a constant line-averaged density of 3×1013cm–3 for both cases of limiter- and divertor-dominated NBI plasmas with Ti-gettering. In these cases the energy confinement time τE were between 2 and 3ms. The density decay characteristic time τp* and global recycling coefficient R have been also measured for Ti-gettered plasmas and large τp* values were observed. As a result high recycling rates (R>0.92) are obtained for a wide density range. For a limiter-dominated case of boronized plasmas (Rax=92.1cm) values of τp were correlated with τE and a linear correlation between them was found for normalized τE to P-0.58 which is a power degradation term in LHD empirical scaling.