Typical Annual Weather Data (Twd9302/L) in Tokyo Area and Its Application to the Daylighting Simulation

Yoshizawa, Nozomu; Kobayashi, Koichi; Inanuma, Minoru; Takeda, Hitoshi

doi:10.3130/aije.70.23_7

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…Igawa proposed the All Sky Model-R as a sky-model that expresses a time-oriented luminance distribution in the sky (Igawa, Matsuzawa, & Koga, 2004). This study used the All Sky Model-R to obtain the sky radiance distribution, and reflected the result into Radiance (Yoshizawa, Kobayashi, Inanuma, & Takeda, 2005). To set climate conditions for the All Sky Model-R, the Expanded AMeDAS Meteorological Data in standard years (from 1981 to 2000) was used.…”

Section: Application Of All Sky Model-rmentioning

confidence: 99%

Simulation study on energy conservation performance for integrated external louver facades

Misawa¹,

Azuma

Cho

et al. 2016

FDE

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The authors previously proposed integrated-facade-systems comprising different types of external louvers integrated with buckling restraint braces. The systems can be applied to both new and existing buildings, paying attention to the building's appearance, upgraded structural performance and indoor environment. The authors have studied indoor daylight conditions with louver facades and a research paper was published in this journal (Misawa, Hikone, Nakamura, Iwamoto, Iwata, 2014). This research study reports on the energy conservation performance of louver facades and proposes an External Shading Coefficient (ESC) for external louver systems. Situations with five external louver facades and no louvers, facing three facade orientations (East, South and West) are examined. The year-round ESC is simulated every hour using Radiance software for transient solar radiation calculations. Furthermore, by using the proposed ESC, case studies for typical Japanese offices are carried out to verify reduction effects on the annual thermal load and electrical energy consumption of an air source heat pump for each louver setup. Simulation results are calculated in hourly increments using TRNSYS software; the results show that both thermal loads and electrical energy consumption are reduced regardless of louver types and facade orientations when integrated external louver facades are installed.

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Section: Application Of All Sky Model-rmentioning

confidence: 99%

Simulation study on energy conservation performance for integrated external louver facades

Misawa¹,

Azuma

Cho

et al. 2016

FDE

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show abstract

“…Indeed, varying seasons had little influence on the illuminance distribution at the inner side. [6], [7] Ground Reflectance= 30% 1) Room A 2) Room B The illuminance distributions by the window, on the other hand, differed greatly by season. Since the solar altitude is higher in summer, the distribution in summer was more skewed toward the window side than in spring and fall.…”

Section: Illuminance Distribution In Summer and Wintermentioning

confidence: 99%

Characteristics of Indoor Lighting Environment Using Daylight with a Light Shelf

Kido¹,

Shiraishi²

2013

IJESD

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Abstract-We carried out measurements and lighting simulations of an existing office building in order to clarify the characteristics of indoor lighting environments using daylight with a light shelf. Paired comparison measurements were performed to elucidate the difference between using only a light shelf and using a light shelf with a blind in terms of horizontal illuminance and window luminance. Next, the effect of the light shelf's presence or absence on indoor lighting environments was verified through lighting simulations.Measurements and simulations revealed that when a light shelf was available, the luminance of the upper part of the window was higher than that of the lower part, suggesting that glare does not result from the lower part of the window. We also found that using a light shelf increased horizontal illuminance by about 10% over the case of no light shelf. The illuminance distribution of the ceiling indicated that illuminance was high at the window and that reflected diffuse light reached the back of the room, so that it was obvious effect on the horizontal illuminance distribution.

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Study on Energy Conservation Performance for Integrated External Louver Facades

Misawa¹

2016

Journal of Facade Design and Engineering

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Typical Annual Weather Data (Twd9302/L) in Tokyo Area and Its Application to the Daylighting Simulation

Cited by 3 publications

References 2 publications

Simulation study on energy conservation performance for integrated external louver facades

Simulation study on energy conservation performance for integrated external louver facades

Characteristics of Indoor Lighting Environment Using Daylight with a Light Shelf

Study on Energy Conservation Performance for Integrated External Louver Facades

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