Shading: A design tool for analyzing mutual shading between buildings

Yezioro, Abraham; Shaviv, Edna

doi:10.1016/0038-092x(94)90078-g

Cited by 61 publications

(23 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Further applications include estimating the thermal comfort of buildings [215,228], and the determination of solar envelopes [229,230]. In the energy domain, Lange and Hehl-Lange [231] study shadow casting from a proposed wind turbine towards the existing surrounding residential buildings.…”

Section: Estimation Of Shadows Cast By Urban Featuresmentioning

confidence: 99%

Applications of 3D City Models: State of the Art Review

Biljecki

Stoter

Ledoux

et al. 2015

IJGI

610

380

View full text Add to dashboard Cite

In the last decades, 3D city models appear to have been predominantly used for visualisation; however, today they are being increasingly employed in a number of domains and for a large range of tasks beyond visualisation. In this paper, we seek to understand and document the state of the art regarding the utilisation of 3D city models across multiple domains based on a comprehensive literature study including hundreds of research papers, technical reports and online resources. A challenge in a study such as ours is that the ways in which 3D city models are used cannot be readily listed due to fuzziness, terminological ambiguity, unclear added-value of 3D geoinformation in some instances, and absence of technical information. To address this challenge, we delineate a hierarchical terminology (spatial operations, use cases, applications), and develop a theoretical reasoning to segment and categorise the diverse uses of 3D city models. Following this framework, we provide a list of identified use cases of 3D city models (with a description of each), and their applications. Our study demonstrates that 3D city models are employed in at least 29 use cases that are a part of more than 100 applications. The classified inventory could be useful for scientists as well as stakeholders in the geospatial industry, such as companies and national mapping agencies, as it may serve as a reference document to better position their operations, design product portfolios, and to better understand the market.

show abstract

Section: Estimation Of Shadows Cast By Urban Featuresmentioning

confidence: 99%

Applications of 3D City Models: State of the Art Review

Biljecki

Stoter

Ledoux

et al. 2015

IJGI

610

380

View full text Add to dashboard Cite

show abstract

“…Such interactions among geometries are known as external shading effects or mutual shading effects (Littlefair 1998;McPherson and Simpson 2003;Ok 1992;Quan et al 2014;Ratti et al 2005;Rode et al 2013;Yezioro and Shaviv 1994;Yi and Malkawi 2009). The effects generally increase building energy use during winter and reduce it during summer because of less solar gain.…”

Section: The Influence Of Urban Context On Building Energy Usementioning

confidence: 98%

Urban Data and Building Energy Modeling: A GIS-Based Urban Building Energy Modeling System Using the Urban-EPC Engine

Quan

Augenbroe

et al. 2015

Lecture Notes in Geoinformation and Cartography

View full text Add to dashboard Cite

There is a lack of building energy modeling in current planning support systems (PSS) while building energy efficiency is getting greater attention. This is due to the current limitations of energy modeling at the urban scale and the inconsistency between the available urban data and that required for modeling. The chapter seeks to fill this gap by developing a GIS-based urban building energy modeling system, using the Urban-EPC simulation engine, a modified Energy Performance Calculator engine. This modeling system is compatible with other planning tools, enhanced by the combination of physical and statistical modeling, and adjustable in its resolution, speed and accuracy. Through processing the Data Preparation, Pre-Simulation, Main Simulation and Visualization and Analysis models in this energy modeling system, the urban data related to the basic building information, mutual shading, microclimate and occupant behavior are collected, modified, and synthesized in the GIS platform and then used as the input of the Urban-EPC engine to get energy use of every building in a city, which could be further visualized and analyzed. The method is applied in Manhattan to show its potential as an important component in PSS to inform urban energy policy making.

show abstract

“…In general, fixed shading devices use vertical or horizontal shading elements. Studies on fixed shading devices mostly concern comparisons of the required energy amount between cases that use a shading device and cases that do not, or comparisons of performance for environmental factors for different orientations of the building envelope [3][4][5][6][7][8]. Through a numerical analysis, Palmero-Marrero et al [3] compared the energy requirements according to the slat angles of fixed louvers, the altitude of the sun, the azimuth, and the height of the windows.…”

Section: Introductionmentioning

confidence: 99%

Method of Deriving Shaded Fraction According to Shading Movements of Kinetic Façade

Choi

Lee

2017

Sustainability

View full text Add to dashboard Cite

Exterior dynamic shading devices, installed on "kinetic façades", generate shaded areas of various shapes on windows according to the shape of the shading elements and the direction of their movement. The calculation of the shaded area is vitally important because it is directly related to the solar heat gain calculation process in building energy assessments. This paper dis-cusses a dynamic calculation method for deriving shaded fractions in consideration of the irregular shapes and unique movements of the shading elements in kinetic façades. The planar-polygon method was adopted for calculating accurate shaded areas on a window generated by irregularly shaped shade elements. To account for movements of the shading elements, the range of movement directions (i.e., rotating, sliding, etc.) was divided into β steps of equivalent intervals. Applying these two methods, a shaded area calculation tool for the kinetic façade was developed. Three movement directions of shading devices were chosen for calculating shaded area, and the values of shaded fractions for six kinetic façade types were derived for different façade orientations during the summer and winter solstices. Lastly, to simplify the detailed calculation method, estimation equations for two types of kinetic façade were derived from a trend analysis of the shaded fraction values. This study deals with both detailed and simplified methods (estimation equation) for deriving the shaded fraction. The detailed method can be a more accurate solution in deriving the shaded fractions generated by complex exterior movable shading devices. However, the simplified method can be adopted in the early design stages to review various shading devices within a brief duration of time.

show abstract

Shading: A design tool for analyzing mutual shading between buildings

Cited by 61 publications

References 4 publications

Applications of 3D City Models: State of the Art Review

Applications of 3D City Models: State of the Art Review

Urban Data and Building Energy Modeling: A GIS-Based Urban Building Energy Modeling System Using the Urban-EPC Engine

Method of Deriving Shaded Fraction According to Shading Movements of Kinetic Façade

Contact Info

Product

Resources

About