ILLUMINANCE, SKY FACTOR AND RELATIVE SOLAR ENERGY AROUND LOW AND MEDIUM RISE BUILDINGS : Design control method considering the quality of daylight in urban open space (2)

In this paper, we focus on composite shadows between skyscrapers and other buildings and quantitatively evaluate the multiple effects on the sunshine environment of city-blocks. We consider not only the increase of the shadow time but also the additional superpositions of shadow to analyze sunshine environments in detail. Since these two factors have complementary relationships, so they enable us to divide the effects of composite shadow. Main results of this paper are as follows: (i) the superposition of shadows have a stronger impact to congested building area than the increase of shadow time does; (ii) the effect of shadow superpositions is almost as same as that of shadow-increasing in throughout the day.

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Multiple Effects of Skyscraper-shadows on the Sunshine Environment of City-blocks

Watanabe

Honma

et al. 2019

Toshi keikaku rombunshu

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ILLUMINANCE, SKY FACTOR AND RELATIVE SOLAR ENERGY AROUND A BUILDING : Design control method considering the quality of daylight in urban open space (1)

篠崎

桑田

斉藤

2000

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This study aims at making basic investigation 正 br the f μ ture standard and regulation of building shape considering the qua 璽 ity of daylight arQund the buiIding ． F 孟 rstly ， we s玉 mu 生 ated sky factor and relative muminance i ' n cLoudy conditiQn ． Comparing their levelS ， it was 葦 bund that sky factor could be representative index of the brightness in urban open space ， Secondly ， the relative solar energy in sunny condition and sunsh 孟 ne duration were calcu 正 ated ． A 且 though the distribution of sunshine duration ha5 wider spread toward east and wes 転 these impacts spread to north intensively in the distribution of relative solar energy ・

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CHARACTERISTICS OF OUTDOOR SPACES IN THE NATIONAL UNIVERSITY CAMPUSES BY USING SKY FACTOR AND VERTICAL DIRECT DAYLIGHT FACTOR : Characteristics of outdoor spaces in the national university campuses Part 1

山口¹,

谷口

2003

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The purpose ofthis study is tograspthe characteristics ofoutdoor spaces inthe national unive 【 sity campuses by using the sky bctorand the ． verdca 】 directday］ightf 自 ctor ． The sky factorshows an openness of the outdoor space ， and the vertica ］directdaylight factor shows a lighting condition ， We computed both indexes abOut IOO campuses and cornpared itWith the rate ofbUilding to site and therate offloor to site 、 As for 12campuses ， itwas examined about the infiuence which a change inし he building arTangement exerted on both indexes and the building density indexes ． The results areas 血 )Uows； 1)Average ofsky factoris closely related to the rate ofbUilding tQ siteand the rate offioorto site． 2)Average ofsky factorand venical direc しdaylight factor are useful indexes which can show characteristics ofarTangement ofbuildings ， Keyvvord ' university camPUS ， sky factor ， verticat direct daylightfactor ， outdoor sPace ， environmental evatuation

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ILLUMINANCE, SKY FACTOR AND RELATIVE SOLAR ENERGY AROUND LOW AND MEDIUM RISE BUILDINGS : Design control method considering the quality of daylight in urban open space (2)

Cited by 10 publications

References 2 publications

Multiple Effects of Skyscraper-shadows on the Sunshine Environment of City-blocks

Multiple Effects of Skyscraper-shadows on the Sunshine Environment of City-blocks

ILLUMINANCE, SKY FACTOR AND RELATIVE SOLAR ENERGY AROUND A BUILDING : Design control method considering the quality of daylight in urban open space (1)

CHARACTERISTICS OF OUTDOOR SPACES IN THE NATIONAL UNIVERSITY CAMPUSES BY USING SKY FACTOR AND VERTICAL DIRECT DAYLIGHT FACTOR : Characteristics of outdoor spaces in the national university campuses Part 1

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