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Volume 96, Issue 9
Displaying 1-5 of 5 articles from this issue
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Yoshiki NakamuraArticle type: Article
2012 Volume 96 Issue 9 Pages 624-630
Published: September 01, 2012
Released on J-STAGE: March 13, 2020
DOIhttps://tzjy-jsjc-gov-cn-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.96.624JOURNAL FREE ACCESSIt is apparent that Office lighting installation from now would be graded by electric power saving performance of the installation. The author proposes the performance accomplished by the design should be separated from electric efficacy of the installation but should be indicated by Electric Luminous Flux (lm/m^2) or Electric Luminous Flux Consumption (lmh/m^2). To obtain better saving performance, the designer would deal not with illuminance of the working plane but with luminance. The author introduces luminance image, brightness image, brightness examination image, glare image, and real-appearance image as the basis of lighting design, and shows an office lighting design example by using TAL which reaches to 33 % ELFC of the general lighting.View full abstractDownload PDF (3253K) -
Energy Saving Control Technology for Office Lighting(<Special Issue>Next Generation Office Lighting)Shigeo GotohArticle type: Article
2012 Volume 96 Issue 9 Pages 631-635
Published: September 01, 2012
Released on J-STAGE: March 13, 2020
DOIhttps://tzjy-jsjc-gov-cn-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.96.631JOURNAL FREE ACCESSGlobal demand for energy saving drives luminaire development aiming at reducing power consumption whilst maintaining a comfortable lighting environment. Solid state devices like LEDs are rapidly replacing fluorescent lamps as a main lighting sources. Also, new sensing technology has been developed in addition to the conventional human presence sensors and illumination sensors. It is important to combine these sensors and lighting control technology, not just for energy savings but also to provide a comfortable office environment.View full abstractDownload PDF (1413K) -
Toshie IwataArticle type: Article
2012 Volume 96 Issue 9 Pages 636-641
Published: September 01, 2012
Released on J-STAGE: March 13, 2020
DOIhttps://tzjy-jsjc-gov-cn-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.96.636JOURNAL FREE ACCESSDaylighting is expected to contribute to reducing electric consumption and cooling load and increasing psychological and physiological comfort of occupants and productivity. This paper describes technology and technique for controlling daylight. The luminous efficacy of solar radiation which is used for evaluating energy saving is indicated. What should be controlled for adequate daylighting and how to evaluate daylighting in CASBEE system are summarized. Automated controlling blind, both passive and active daylighting systems are introduced and future subjects are discussed.View full abstractDownload PDF (1077K) -
Mitsunori MikiArticle type: Article
2012 Volume 96 Issue 9 Pages 642-649
Published: September 01, 2012
Released on J-STAGE: March 13, 2020
DOIhttps://tzjy-jsjc-gov-cn-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.96.642JOURNAL FREE ACCESSRecently, lightings in offices have been changing from fluorescent lamps to LEDs where LEDs are in theory fully dimmable and their color temperature can also be changed easily by using two types of LEDs with different color temperatures. A newly developed intelligent lighting system can provides individual illuminance and color temperature with ceiling LED light fixtures with distributed computer-controlled luminance and color temperatures. The system increases comfortable work environment and remarkable energy savings.View full abstractDownload PDF (1923K) -
Hiroki MizuiArticle type: Article
2012 Volume 96 Issue 9 Pages 650-654
Published: September 01, 2012
Released on J-STAGE: March 13, 2020
DOIhttps://tzjy-jsjc-gov-cn-1416.res.gxlib.org.cn:443/rwt/1416/https/MSYXTLUQPJUB/10.2150/jieij.96.650JOURNAL FREE ACCESSIn the Obayashi Technical Research Institute, visualization systems are introduced to operate effectively various energy conservation systems. We categorized the purposes of the visualization into two, "visualization for improvement in the consciousness to environment" and "visualization for the building energy management". Visualization systems are built along with these concepts. In this paper, energy conservation technologies installed in this building and effect of the visualization systems are reported.View full abstractDownload PDF (29617K)
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