All issues
Successor
Volume 61, Issue 3
Displaying 1-8 of 8 articles from this issue
- |<
- <
- 1
- >
- >|
-
[in Japanese]1982 Volume 61 Issue 3 Pages 157
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (218K) -
Teijiro YONEZAWA1982 Volume 61 Issue 3 Pages 158-168
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThe rapid depletion of fossil fuels makes consideration of various alternative sources, such as nuclear energy, solar energy, hydrogen energy and so on, a matter of great importance. In this review, the significance of hydrogen as a future energy alternative is stressed.
The thermochemical, electrolytic and some innovative methods of hydrogen production including biological solar energy conversion are briefly summarized. In this connection, several molecular orbital results which are necessary to study physico-chemical properties of a water molecule and its behavior in chemical reactions are presented.
Finally, some comments on hydrogen storage like metal hydrides and alloy-condensed aromatic hydrocarbon systems which is expected to be an innovative chemical storage are made. A theoretical attempt to study the bonding nature of a hydrogen atom and hydro-gen anion in several magnesium clusters is introduced.View full abstractDownload PDF (1359K) -
Yoshiaki MIURA, Toshiaki OKUHARA1982 Volume 61 Issue 3 Pages 169-178
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSMembers of the Japanese iron and steel industry organised the Committee for Research and Development on the Formed Coke Process within the Japan Iron and Steel Federation in order to establish the manufacturing technology for continuously produc-ing formed coke as a countermeasure against future anticipated depletion of coking coal resources. The Committee began its activities in August, 1978, upon receiving a research grant from the Government. At present, Kawasaki Steel Corp., Kobe Steel Ltd., Nippon Steel Corp., and Nippon Kokan K.K., are members of the Committee.
This report describes the following aspects of the Committee's joint research: the objectives and progress of the research, an outline of the manufacturing process and a feasibility study therefore, the research project for pilot plant tests, some experiments for de-signing the pilot plant and improving the process, and the future schedule of research.View full abstractDownload PDF (1403K) -
Tadashi YAMAMOTO, Yoshio TANAKA, Masaharu SASAKI, Hisao HATTORI1982 Volume 61 Issue 3 Pages 179-187
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIn this paper, a study of useful temperature range of heat pipes em-ploying ThermS 300, mercury, sulphur and sodium as the working fluid are presented.
A ThermS 300 heat pipe is made from a SUS 304 stainless steel tube with 25mm diameter and 1.5mm thickness and is wickless type. The total length of the heat pipe is 1000mm, the length of heating zone is 180mm, adiabatic zone is 320mm and the remaing part is the condenser.
Mercury heat pipe is manufactured from SUS 304 stainless steel tube with 12.7mm diameter and 1. 5mrn thickness. The capillary structure is two layers of 50 mesh stainless steel. The total length of heat pipe is 300mm, the length of heating zone is 60mm, adiabatic zone is 60mm and the remaining part is condenser. Sulphur heat pipe is made from STPA steel tube for boiler with 27.2mm diameter and 4. Omm thickness and is wickless type. The total length is 500mm. The length of heating zone is 100mm, adiabatic zone is 100mm and condenser zone is 300mm.
Sodium heat pipe is manufactured from SUS 316 L stainless steel tube with 25mm diameter and 1. 5mm thickness and the capillary structure is two layers of 50 mesh stainless steel. The total length is 1000mm, in which heating zone is 265mm, adiabatic zone is 235 mm and condenser zone is 500mm.
The experiment is carried out mainly by means of bottom heating, in which surface temperature fluctuation at evaporator and condenser zone and pressure fluctuation in heat pipe are measured at low pressures.
As a result of the tests, the useful temperature range of these heat pipes is discussed.View full abstractDownload PDF (1395K) -
Tadashi YAMAMOTO, Yoshio TANAKA, Masaharu SASAKI, Hisao HATTORI1982 Volume 61 Issue 3 Pages 188-196
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIn this paper, the results of the performance tests of the air to air heat exchanger and the heat pipe used in the unit are presented. The heat exchanger is consisted of 28water-copper grooved type heat pipes with 9.74mm diameter. The number of rows of heat pipes is 8 rows with plate Al fins. Face area is 0.01852m2.
As the results of the tests, it can be concluded that
(1) the experimental values of the over-all heat transfer coefficients are nearly equal to the values calculated by equation being based on over-all thermal resistance of the heat pipe.
(2) the experimental values of outside heat transfer film coefficient including fin effi-ciency and contact resistance between fin and heat pipe are lower than the values obtained by using Vampola's equation by 10 percent.
(3) the heat transfer rate of the heat pipe exchanger can be obtained diagrammatical on the curve of the evaporator zone surface temperature vs condenser zone surface temperature under a constant heat input.
(4) the pressure drop across a heat pipe bunk is higher than the calculated values, but there is not a big difference between the experimental values and the calculated values.View full abstractDownload PDF (1057K) -
Masami HIROSE, Kunio KAWAWADA, Hiroyuki AOKI, Hiroshi YANAI1982 Volume 61 Issue 3 Pages 197-202
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSStudies were made on the industrial manufacturing process of granular activated carbon from the palm kernel shell charcoal by rotary kiln, and the following re-sults were obtained.
(1) The steam activation test of 5 to 32 mesh palm kernel shell charcoal was performed by an inside fired rotary kiln (0.7m O.D.x 12m L) equipped with a side burner and scraper boards. It gives only the decoloring power of approx. 120ml/g for methylene blue solution.
(2) The steam activation test of palm charcoal grains screened into both 5 to 12 mesh and 12 to 32 mesh, using the rotary kiln with a combustion chamber (1m O.D.x 12m L) is indicated the following conditions for producing granular activated carbon with methylene blue decoloring power of 150 to 180ml/g.
Retention time: 10hrs. Kiln inlet temperature: 1, 000°C
Steam rate: 100kg/hr Charcoal charging rate: 35kg/hr
Air/Fuel ratio: 11
Based on above results, we industrialized the manufacturing process of palm kernel shell activated carbon by rotary kiln with a combustion chamber (1.8m O.D.x 26m L) and are now supplying the activated carbon for triple cigarette filter with the following features; grain size 16-32 mesh, bulk density 540g/l, and adsorption capacity of acetone 23%.View full abstractDownload PDF (657K) -
Masami HIROSE, Kunio KAWAWADA, Hiroyuki AOKI, Hiroshi YANAI1982 Volume 61 Issue 3 Pages 203-207
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSStudies were made on the manufacturing conditions of activated carbon pellets by externally heated rotary kiln using charcoal powder generated in the crushing and screening processes of rubber wood charcoal and palm kernel shell charcoal, and the fol-lowing results were obtained.
(1) The generated activated carbon pellets has higher methylene blue decoloring power and lower activation yield and hardness with decreasing rate of palm kernel shell char-coal fraction. In the case of rubber wood charcoal used solely, in particular, the hardness of activated carbon pellets is lower than JIS standard hardness (90%).
(2) In these studies, it appeared clear that the activated carbon pellets having methylene blue decoloring power of 150 to 200ml/g and hardness of 90% or more are able to be manufactured in following conditions:
Raw material charcoal grain: 200 mesh or smaller
Mixing ratio rubber wood/palm=1/1
Ratio of refined coal tar to charcoal: 40wt%
Drying temperature of charcoal pellets: 150°C
Carbonization temperature: 500°C
Activation temperature: 1, 000°C
Charging rate ratio: steam/charcoal=3/1View full abstractDownload PDF (543K) -
[in Japanese]1982 Volume 61 Issue 3 Pages 208-213
Published: March 20, 1982
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (792K)
- |<
- <
- 1
- >
- >|