Comprehensive ventilation and energy performance analysis of vertical shading devices in cooling-dominant climates

Xiaoyue Yi; Siegfried Yeboah

doi:10.7771/3067-4883.1753

Comprehensive ventilation and energy performance analysis of vertical shading devices in cooling-dominant climates

Xiaoyue Yi, Siegfried Yeboah

Civil and Building Services Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Consideration for reducing energy consumption is crucial in sustainable building designs. Vertical Shading Devices (VSDs), as components of sustainable building design, are widely applied in buildings in tropical environments to minimize internal heat gains towards reducing cooling energy consumption. However, their influence on building performance is based on optimal designs of orientation and depths which are not comprehensively included in recent studies. In this study, the effects of different VSD configurations on building ventilation and energy performance in five cooling-dominated cities have been investigated using models in Building Energy Simulation Test (BESTEST) in EnergyPlus and jEPlus. The relationship between VSD orientation and depth and shading performance parameters such as solar gains, mean radiant temperature, total ventilation loss, and cooling energy were evaluated. The results show that building solar gains and ventilation flowrates increased with the increasing VSD tilt angles. Also, the VSDs’ internal temperature decreasing capacity increased as the depths increased. The changes in VSD configurations were found to reduce solar gains by 84.7%, indoor temperature by 1.47°C, and ventilation loss by 60%. This study can help building designers to comprehend energy and ventilation performance of VSD configurations and provide insights and references for sustainable shading design.

Original language	English
Title of host publication	Proceedings of the 23rd CIB World Building Congress
Publisher	Purdue University
Volume	1
DOIs	https://doi.org/10.7771/3067-4883.1753
Publication status	Published - 19 Jun 2025
Event	CIB World Building Congress 2025 - Purdue University, West Lafayette , United States Duration: 19 May 2025 → 23 May 2025 https://wbc2025.cibworld.org/

Publication series

Name	CIB Conferences
Publisher	Purdue University
ISSN (Print)	3067-4883
ISSN (Electronic)	3067-4883

Conference

Conference	CIB World Building Congress 2025
Abbreviated title	WBC2025
Country/Territory	United States
City	West Lafayette
Period	19/05/25 → 23/05/25
Other	The CIB World Building Congress is held every three years, with the purpose for building and construction experts across the world, both in and outside the CIB community, to come together to discuss, learn and exchange their expertise in the built environment. In 2025 Purdue University will host the 23rd CIB World Building Congress 2025 at its campus in West Lafayette, Indiana, USA, from 19-23 May 2025. The theme of the conference is Sustainable built environment – the role of the construction community in meeting the UN SDGs. We look forward to welcoming all CIB members, industry representatives, early career researchers and student chapters, and other delegates to THE event in the global construction calendar.
Internet address	https://wbc2025.cibworld.org/

Keywords

Vertical Shading Devices
Passive cooling
Ventilation

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.7771/3067-4883.1753

manuscript_Camera-readyAccepted author manuscript, 2.63 MBLicence: CC BY 4.0

Cite this

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title = "Comprehensive ventilation and energy performance analysis of vertical shading devices in cooling-dominant climates",

abstract = "Consideration for reducing energy consumption is crucial in sustainable building designs. Vertical Shading Devices (VSDs), as components of sustainable building design, are widely applied in buildings in tropical environments to minimize internal heat gains towards reducing cooling energy consumption. However, their influence on building performance is based on optimal designs of orientation and depths which are not comprehensively included in recent studies. In this study, the effects of different VSD configurations on building ventilation and energy performance in five cooling-dominated cities have been investigated using models in Building Energy Simulation Test (BESTEST) in EnergyPlus and jEPlus. The relationship between VSD orientation and depth and shading performance parameters such as solar gains, mean radiant temperature, total ventilation loss, and cooling energy were evaluated. The results show that building solar gains and ventilation flowrates increased with the increasing VSD tilt angles. Also, the VSDs{\textquoteright} internal temperature decreasing capacity increased as the depths increased. The changes in VSD configurations were found to reduce solar gains by 84.7\%, indoor temperature by 1.47°C, and ventilation loss by 60\%. This study can help building designers to comprehend energy and ventilation performance of VSD configurations and provide insights and references for sustainable shading design.",

keywords = "Vertical Shading Devices, Passive cooling, Ventilation",

author = "Xiaoyue Yi and Siegfried Yeboah",

year = "2025",

month = jun,

day = "19",

doi = "10.7771/3067-4883.1753",

language = "English",

volume = "1",

series = "CIB Conferences",

publisher = "Purdue University",

booktitle = "Proceedings of the 23rd CIB World Building Congress",

note = "CIB World Building Congress 2025, WBC2025 ; Conference date: 19-05-2025 Through 23-05-2025",

url = "https://wbc2025.cibworld.org/",

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TY - GEN

T1 - Comprehensive ventilation and energy performance analysis of vertical shading devices in cooling-dominant climates

AU - Yi, Xiaoyue

AU - Yeboah, Siegfried

PY - 2025/6/19

Y1 - 2025/6/19

N2 - Consideration for reducing energy consumption is crucial in sustainable building designs. Vertical Shading Devices (VSDs), as components of sustainable building design, are widely applied in buildings in tropical environments to minimize internal heat gains towards reducing cooling energy consumption. However, their influence on building performance is based on optimal designs of orientation and depths which are not comprehensively included in recent studies. In this study, the effects of different VSD configurations on building ventilation and energy performance in five cooling-dominated cities have been investigated using models in Building Energy Simulation Test (BESTEST) in EnergyPlus and jEPlus. The relationship between VSD orientation and depth and shading performance parameters such as solar gains, mean radiant temperature, total ventilation loss, and cooling energy were evaluated. The results show that building solar gains and ventilation flowrates increased with the increasing VSD tilt angles. Also, the VSDs’ internal temperature decreasing capacity increased as the depths increased. The changes in VSD configurations were found to reduce solar gains by 84.7%, indoor temperature by 1.47°C, and ventilation loss by 60%. This study can help building designers to comprehend energy and ventilation performance of VSD configurations and provide insights and references for sustainable shading design.

AB - Consideration for reducing energy consumption is crucial in sustainable building designs. Vertical Shading Devices (VSDs), as components of sustainable building design, are widely applied in buildings in tropical environments to minimize internal heat gains towards reducing cooling energy consumption. However, their influence on building performance is based on optimal designs of orientation and depths which are not comprehensively included in recent studies. In this study, the effects of different VSD configurations on building ventilation and energy performance in five cooling-dominated cities have been investigated using models in Building Energy Simulation Test (BESTEST) in EnergyPlus and jEPlus. The relationship between VSD orientation and depth and shading performance parameters such as solar gains, mean radiant temperature, total ventilation loss, and cooling energy were evaluated. The results show that building solar gains and ventilation flowrates increased with the increasing VSD tilt angles. Also, the VSDs’ internal temperature decreasing capacity increased as the depths increased. The changes in VSD configurations were found to reduce solar gains by 84.7%, indoor temperature by 1.47°C, and ventilation loss by 60%. This study can help building designers to comprehend energy and ventilation performance of VSD configurations and provide insights and references for sustainable shading design.

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KW - Passive cooling

KW - Ventilation

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M3 - Conference contribution

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