Affiliation:
1. Moscow State University of Civil Engineering
2. the Moscow State University of Civil Engineering
Abstract
The main source of daylight is the Sun. The EarthТs atmosphere scatters its light due to the air, water vapour, ice particles (at high altitudes), dust, various gases, and other contaminants that appear in the air as a result of human activities. This forms a daylight diffuse (scattered) component, which is a data basis for calculation of daylight in buildings. This basis has its own features for a given region.
This article shows a calculation of sun-lighting efficiency in Vietnam. We obtained a variation of horizontal daylight illuminance in Hanoi (21.03∞N). Comparing it with the variation of horizontal daylight illuminance in Moscow (55.70∞N), we can see a high level and a distribution uniformity of outdoor illuminance in Vietnam. The maximum levels of diffuse illuminance and total illuminance in Hanoi are 45.2 and 58.52 klx; the maximum levels of diffuse illuminance and total illuminance in Moscow are 28.3 and 53.1 klx. Besides, illuminance levels in winter months are much higher for Hanoi than for Moscow. This can be explained by different latitudes of these cities and by the Sun motion.
Publisher
Redakcia Zhurnala Svetotekhnika LLC
Reference9 articles.
1. Kittler R., Kocifaj M., Darula S. Daylight Science and Daylight Technology //: Springer, New York, 2012, 358 p.
2. Navvab M., Karayel M., NeТeman E., Selkowitz S. Analysis of luminous efficacy for daylight calculations // Proc. Int. daylighting conf., 4-7.11.1986, Long Beach, California, USA, ASHRAE Publications Sales.
3. Fabian H., Uetani Y., Darula S. Monthly luminous efficacy models and illuminance prediction using ground measured and satellite data // Solar Energy, 2018, Vol. 162, pp. 95-108.
4. Perez R., Ineichen P, Seals R., Michalsky J., Stewart R. Modelling daylight availability and irradiance components from direct and global irradiance // Solar Energy, 1990, Vol. 44, # 5, pp. 271-289.
5. Zan N.S., Muon N.V., Dang, P. N., Nguyen P.D. Reference Book for Light Climate Area in Vietnam // Hanoi: Scientific and Technical Publishing House, 1991 (Vietnamese).
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献