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; *; Iida, Hiromasa;
Genshiryoku Kogyo, 38(4), p.55 - 60, 1992/04
no abstracts in English
; Haga, Kazuo
PNC TN9410 91-305, 20 Pages, 1991/09
Additional calculation was performed concerning "Study of Weight of Fast Reactor Power System for Deep Sea Research" (PNC ZN9410 91-176) published in 1991. In the above report, weight was calculated of power systems of 10kWe for an unmanned base located at the depth of water of 8,020m and of 20kWe for a research submersible diving to that of 10km. The power systems consisted of fast reactor systems and pressure hulls. The main points of the additional calculation were as follows. (1)The depth of water was not fixed, but treated as a parameter. (2)When the power systems will be used in future, some buoyancy material will be attached to the systems in order to make the weight of the systems zero in the sea water. The weight of the buoyancy material was also calculated in this report. (3)In the case of 10kWe power source, electric power was generated by eight sets of closed Brayton cycles of 1.3kWe, but two sets of 5kWe were used in this report. The additional calculation lead to the result that the total weight of the power systems at the depth of water containing the buoyancy material were 13.6t and 13.9t for 10kWe and 20kWe respectively.
; Haga, Kazuo
PNC TN9410 91-176, 51 Pages, 1991/05
Fast reactor power systems for deep sea research were studied to some types of usage. Two concepts were figured out to power sources for an uninhibited base (water level 8,020 m, 10kWe) and for a 10 km class research submersible (20 kWe), which are expected to be required in near future. Whereas the power conversion system of the uninhibited base adopted thermoelectric cells and a closed Brayton cycle, that of the submersible used a closed Brayton cycle. It is favorable that the power system for deep sea research is as light as possible. The calculated weight of these power sources showed that the total value including a a pressure shell container will be less than an objected value of 10 tons even in the 10 km class research submersible.
