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GTHTR300 cost reduction through design upgrade and cogeneration

設計改良及び熱電併給によるGTHTR300の経済性向上

Yan, X.; 佐藤 博之; 上地 優; 今井 良行; 寺田 敦彦; 橘 幸男; 國富 一彦

Yan, X.; Sato, Hiroyuki; Kamiji, Yu; Imai, Yoshiyuki; Terada, Atsuhiko; Tachibana, Yukio; Kunitomi, Kazuhiko

最新の技術知見に基づき改良を行いつつ、排熱を淡水化設備に供給した場合の高温ガス炉システムGTHTR300の経済性評価をおこなった。設計改良による5%の発電効率向上に加えて、多段フラッシュ淡水化設備により製造される水を売ることで得られる収入を考慮することで発電コストを1キロワット当たり2.7セントに低減できることを明らかにした。

The latest design upgrade has incorporated several major technological advances made in the past ten years to both reactor and balance of plant in GTHTR300. As described in this paper, these advances have enabled raising the design basis reactor core outlet temperature to 950$$^{circ}$$C and increasing power generating efficiency by nearly 5% point. Further implementation of seawater desalination cogeneration is made through employing a newly-proposed multi-stage flash process. Through efficient waste heat recovery of the reactor gas turbine power conversion cycle, a large cost credit is obtained against the conventionally produced water prices. Together, the design upgrade and the cogeneration are shown to reduce the GTHTR300 cost of electricity to under 2.7 cent/kW h.

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パーセンタイル:66.18

分野:Nuclear Science & Technology

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