All issues
Successor
Volume 59, Issue 11
Displaying 1-9 of 9 articles from this issue
- |<
- <
- 1
- >
- >|
-
[in Japanese]1980 Volume 59 Issue 11 Pages 875
Published: November 20, 1980
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (223K) -
Osamu NAGASAKI1980 Volume 59 Issue 11 Pages 876-884
Published: November 20, 1980
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSRecently the electric power sources are getting father and more omni-present away from demand regions and the power corporations are having difficulty in the construction of power transmission facilities. These circumstances become serious problems in ensuring sufficient power supply to the urban areas.
To cope with the difficulty in acquiring land for facilities and the limited number of roads for the underground transmission routes, 275 KV underground transmission lines are being directly introduced into the urban areas, and transformed down to 22 KV or 66 KV without intermediate steps.
In the future, problems in acquiring land for facilities and restraints of road condition for underground transmission will become so severe that it will be disired to exploit power plants in/near the urban areas.
From such viewpoint, fuel-cell is being watched with keen interest, and the research Sz development in various fields are under way.
Along with the above, UHV transmission technology is being developed to realize the unprecedented long distance bulk power transmission, and 500 KV underground transmission into the urban areas is being plannea to ensure the reliable and stable power supply.
Besides ensuring stable power supply by expanding facilities, some demand management policies should also be established and strongly implemented from the viewpoint of efficient utilization of electric power and prevention of wasting precious energy.View full abstractDownload PDF (1223K) -
Kenshiro KOTO, Shigero KUSANO1980 Volume 59 Issue 11 Pages 885-895
Published: November 20, 1980
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSIt is the basic duty of the city gas industries as a utility industry to supply high-quality city gases stably and safely in answer to the permanent demand of their customers. At the same time, the industries are required to contribute to Japan's energy policy as one of the energy industries. It is an important goal of the energy policy to increase the portion of LNG-based energy as well as nuclear energy to Japan's total energy consump-tion. In this regard, the industries have been making a major contribution by using LNG as a key raw material, and on the other hand playing a significant role in the promotion of ene-rgy conservation in that thermal efficiency of city gas is extremely high.
The demand for gas has been growing in the residential and commercial markets and is expected to grow in the industrial sector. As to the future, industries play a major role to encourage the large-scale industrial usage of LNG-city gas.
Concentrated technical development work is being carried out in producing combined heat and power (electricity), which raises the overall system efficiency, lowers costs and makes city gas a more valued fuel, by using an on-site fuel cell and combined gas turbine-steam turbine system.View full abstractDownload PDF (1642K) -
Shinichi NARITA1980 Volume 59 Issue 11 Pages 896-909
Published: November 20, 1980
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSSince 1965, district heating and cooling systems have been installed at many places in Japan.
The Heat Service Law was enforced in 1972 and the systems are installed at 30 places in 1980. The systems, which form a part of urban and residential policies, are installed to utilize heat energy efficiently, to prevent air pollution and to keep the safety and the fine view of cities.
Recently, people are most concerned about the conservation of energy and resources. From this point of view, the district heating and cooling systems will be installed at more places from now on, utilizing the waste heat of factories and the new energy effectively.View full abstractDownload PDF (2182K) -
Mamoru YAMADA1980 Volume 59 Issue 11 Pages 910-924
Published: November 20, 1980
Released on J-STAGE: October 21, 2011
JOURNAL FREE ACCESSWe are now facing to the era of difficulty in recuring a necessary amount of petroleum in Japan and we must proceed the save-energy programs before the development of the alterrative energy.Concerning to the municipal refuse processing, it is possible to obtain the higher thermal efficiency by the improvement of operating conditions in the con-ventional power plant alone or the applications of the system with another heat utilization in addition to the power plant or the system combined with another energy using process.In this paper, several save-energy programs are studied through calculating thermal efficiency of these systems for various LHV (Lower Heat Values) of ref use.View full abstractDownload PDF (2255K) -
Shunroku TANAKA1980 Volume 59 Issue 11 Pages 925-936
Published: November 20, 1980
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSAlthough there in not fundamental difference about the method or possibility between cities and contries, the climatic conditions and limited space conditions for putting solar collectors should be examined, when applying solar systems in big cities like Tokyo or saka.
At present, only the solar DHW supply systems using the solar water heaters are eco-nomically feasible.In the near future, the demand of city gas or off-peak electricity can be reduced in some new residential districts.
The solar heated houses are not so many.Insulation is more important in Japan.
The solar cooling systems are expected to cut peak load of electricity in summer, but they are too expensive and inefficient.And there is no expectancy that they could affect the demand and supply of electricity in the cities in the near future.View full abstractDownload PDF (1872K) -
Akira ISHIFUKU1980 Volume 59 Issue 11 Pages 937-945
Published: November 20, 1980
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThis report gives an outline of the tendency and the future of air-con-ditioning systems for buildings in Japan.
Concerning the central air-conditioning systems, this report referres to induction unit systems, fan-coil unit systems, dual duct systems and VAV systems.These systems influenced each other and have occupied present positions.
Concerning the unitary systems, this report referres to the appearance of the packaged air-conditioners on markets and to the development of the unitary systems.
Systems of heating and cooling source for air-conditioning have changed depending on their economy and influence to enviromental pollution.This report summarizes history of the systems of heating and cooling source.View full abstractDownload PDF (1596K) -
Yasuhiro MASUDA1980 Volume 59 Issue 11 Pages 946-956
Published: November 20, 1980
Released on J-STAGE: February 23, 2011
JOURNAL FREE ACCESSThis report is about all Japan residential energy consumption in the methods of analysis statistical data and questionnaire research.
The average quantity of annual residential energy consumption per household in 1975, is 7.5×106 kcal.It is about 1.3 times as much as that in 1965.And it differs with region, for example, the quantity of annual residential energy consumption per household in Sapporo, city is about 3 times as much as that in Naha city.
Heating energy use in residence of Japan isn't enough now, except Hokkaido district.So, the average quantity of annual residential energy consumption per household in 1985 will be about 1.5 times as much as that in 1975.View full abstractDownload PDF (1709K) -
Moriyoshi SAKAMOTO1980 Volume 59 Issue 11 Pages 957-963
Published: November 20, 1980
Released on J-STAGE: October 21, 2011
JOURNAL FREE ACCESSThis paper describes principles and performances of promising appliances for home hot water supply and climate control, activated by electric power and gases.
1) Air Source electric heat pumps and their applications would provide the most promising way for energy conservation purposes.Especially gas-assisted electric heat pumps and gas-activated heat pumps are expected to improve the performance at low ambient tem-perature.
2) Direct contact heat exchanger and fluidized bed heat exchanger would be useful for in-.creasing thermal efficiency and minimizing sizes of gas water heaters.View full abstractDownload PDF (999K)
- |<
- <
- 1
- >
- >|