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Takeda, Tetsuaki
Nihon Kikai Gakkai Dai-8-Kai Doryoku, Enerugi Gijutsu Shimpojiumu Koen Rombunshu, p.199 - 202, 2002/00
There are several methods for enhancement of heat transfer such as attaching various type fins on a channel surface of a heat exchanger tube and a steam reforming tube. The objective of this study is to clarify characteristics of heat transfer and pressure drop in the channel inserted metallic wire with high porosity. A heat transfer experiment was performed using a horizontal circular tube to obtain the heat transfer characteristics of the channel inserted copper wire. From the results obtained in this experiment, it seems to be probable that an enhancement of heat transfer method using metallic wire inserts is further improved under the high temperature conditions in efficiency as compared with the other methods.
; Kano, Shigeki
PNC TN9410 98-049, 55 Pages, 1998/03
Low speed tribological properties of stainless steel, ceramics and hard metals were investigated in air at room temperature and in nitrogen atmosphere at high temperature for the consideration of sliding type support structure in intermediate heat exchanger of fast reactor. The following results are obtained. (1)In low speed friction measurements in air at room temperature, friction coefficients of ceramics and hard metals were smaller than that of stainless steel. Surface roughness of the specimens increased the friction force and silicon carbide showed the smallest friction coefficient among the specimens with mirror polished surface. (2)From the results of friction measurements at various sliding speeds in air at room temperature, friction coefficients of ceramics and hard metals were always stable and lower than that of stainless steel. Among ceramics, PSZ showed the smallest friction and silicon carbide showed the most stable friction at any sliding speeds. (3)Friction coefficients of silicon carbide and silicon nitride in nitrogen atmosphere at high temperature showed low values as measured at room temperature. On the contrary, friction coefficient of stainless steel measured in nitrogen atmosphere at high temperature were higher than that measured at room temperature, over 1. (4)In the reciprocal sliding tests in nitrogen atmosphere at high temperature, friction coefficient of stainless steel were over 1. On the contrary, the friction coefficients of ceramics were less than 1 instead of chipping during the slidings.
Takase, Kazuyuki
Nuclear Technology, 118(2), p.175 - 185, 1997/05
Times Cited Count：5 Percentile：42.75(Nuclear Science & Technology)no abstracts in English
Takase, Kazuyuki
Experimental Thermal and Fluid Science, 13(2), p.142 - 151, 1996/08
Times Cited Count：8 Percentile：49.83(Thermodynamics)no abstracts in English
Takase, Kazuyuki; Akino, Norio
JAERI-Research 96-031, 24 Pages, 1996/06
JAERI-Research-96-031.pdf:0.94MB
no abstracts in English
Tsuji, Yoshiyuki*; *; *; Nakamura, Hideo; Kukita, Yutaka
Gas Liquid Flows 1995 (FED-225), 0, p.39 - 45, 1995/00
no abstracts in English
Takase, Kazuyuki; Akino, Norio
Proc. of the 30th Intersociety Energy Conversion Engineering Conf., 0, P. 95_169, 1995/00
no abstracts in English
M.E.Kab*; Hayafune, Hiroki
PNC TN9410 92-018, 58 Pages, 1992/01
This report describes the result of the analysis of unprotected Loss of Flow (LOF) ansient experiment conducted at the PLANt Dynamics Test Loop (PLANDTL) experimentalfility by Super System Code (SSC) and SubAssembly Boiling EvolutioN Analysis (SABENA)ode. This report also describes the effect of the modification we made in SSC with t recent void fraction and two-phase friction multiplier models during the analysis othe experiment. After the analysis, it was found that the two-fluid two-phase flow mel of SABENA 1-D is better than the homogeneous model of SSC in predictiong the therhydraulic behavior within the simulated fuel bundle test section of thePLANDTL facily in case of high quality sodium boiling experiment. Moreover, it wasalso revealed tt the two-fluid one dimensional model is not accurate enough in predicting the onsetf boiling and axial evolution of boiling region inside the heatedchannel.
Ogawa, Masuro
JAERI 1318, 44 Pages, 1989/07
no abstracts in English
; ;
Nihon Genshiryoku Gakkai-Shi, 29(4), p.310 - 318, 1987/04
Times Cited Count：0 Percentile：0.02(Nuclear Science & Technology)no abstracts in English
Ogawa, Masuro; Akino, Norio; ; ; ; Emori, Kouichi; Ouchi, Mitsuo; ;
Journal of Nuclear Science and Technology, 24(1), p.75 - 83, 1987/01
Times Cited Count：1 Percentile：19.33(Nuclear Science & Technology)no abstracts in English
;
Nihon Kikai Gakkai Rombunshu, B, 53(490), p.1685 - 1690, 1987/00
no abstracts in English
), I; Test results of a single-channel mock-up fuel rod with uniform power distribution in the axial direction; ; ; ; ;
Nihon Genshiryoku Gakkai-Shi, 28(5), p.428 - 435, 1986/00
Times Cited Count：4 Percentile：48.02(Nuclear Science & Technology)no abstracts in English
Ogawa, Masuro;
Nihon Kikai Gakkai Rombunshu, B, 52(477), p.2164 - 2169, 1986/00
no abstracts in English
):(1st Report,Test Results of a Fuel Rod with Uniform Power Distribution in the Axial Direction.); ; ; ; ; ;
JAERI-M 85-084, 41 Pages, 1985/06
no abstracts in English
; ; Sanokawa, Konomo; *; *; *
Nuclear Technology, 66, p.491 - 502, 1984/00
Times Cited Count：4 Percentile：45.51(Nuclear Science & Technology)no abstracts in English
;
JAERI-M 7059, 57 Pages, 1977/04
no abstracts in English
JAERI-M 6598, 28 Pages, 1976/06
no abstracts in English
Nakamura, Misaki*; Yukawa, Masaki*; Hirayama, Tomoyuki*; Miyagawa, Takayuki*; Yamamoto, Tomohiko; Miyazaki, Masashi; Fukasawa, Tsuyoshi*
no journal, ,
no abstracts in English
Nakamura, Misaki*; Yukawa, Masaki*; Hirayama, Tomoyuki*; Uchita, Masato*; Yamamoto, Tomohiko; Miyazaki, Masashi; Watakabe, Tomoyoshi; Fukasawa, Tsuyoshi*
no journal, ,
no abstracts in English
