Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies

Shuyang LI; Danny H W LI; Wenqiang CHEN

doi:10.26868/25222708.2019.210943

Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies

Department of Architecture and Civil Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

Abstract

Estimation of the daylight level for any point within an interior space is essential to daylighting designs and assessments. In 2003, the CIE adopted a range of 15 skies as international standard models that represent the actual skies of many places and cover the whole probable spectrum of skies. In many urban cities, the external obstructions may significantly reduce the amount of daylight entering to the indoor space. Previously, we developed a number of calculation tools to predict daylight illuminance for rooms facing different orientations under various CIE Standard Skies. This paper presents the work on the calculation of the PDF, ADF and VDF under various overcast and non-overcast obstructed skies. Calculation procedures are demonstrated. Characteristics of the findings and design implications are discussed.

Original language	English
Title of host publication	Proceedings of Building Simulation 2019
Subtitle of host publication	16th Conference of IBPSA
Editors	V. Corrado, E. Fabrizio, A. Gasparella
Publisher	International Building Performance Association (IBPSA)
Pages	1177-1182
ISBN (Print)	978-1-7750520-1-2
DOIs	https://doi.org/10.26868/25222708.2019.210943
Publication status	Published - Sept 2019
Event	Building Simulation 2019 - 16th Conference of IBPSA (BS 2019) - Angelicum Congress Centre, Rome, Italy Duration: 2 Sept 2019 → 4 Sept 2019 http://buildingsimulation2019.org/

Publication series

Name	Proceedings of the International Building Performance Simulation Association
Volume	16
ISSN (Print)	2522-2708

Conference

Conference	Building Simulation 2019 - 16th Conference of IBPSA (BS 2019)
Place	Italy
City	Rome
Period	2/09/19 → 4/09/19
Internet address	http://buildingsimulation2019.org/

Research Keywords

CIE Standard Skies
Point Daylight Factor
Average Daylight Factor
Vertical Daylight Factor

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10.26868/25222708.2019.210943

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LI, S., LI, D. H. W., & CHEN, W. (2019). Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies. In V. Corrado, E. Fabrizio, & A. Gasparella (Eds.), Proceedings of Building Simulation 2019: 16th Conference of IBPSA (pp. 1177-1182). (Proceedings of the International Building Performance Simulation Association; Vol. 16). International Building Performance Association (IBPSA). https://doi.org/10.26868/25222708.2019.210943

LI, Shuyang ; LI, Danny H W ; CHEN, Wenqiang. / Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies. Proceedings of Building Simulation 2019: 16th Conference of IBPSA. editor / V. Corrado ; E. Fabrizio ; A. Gasparella. International Building Performance Association (IBPSA), 2019. pp. 1177-1182 (Proceedings of the International Building Performance Simulation Association).

@inproceedings{a740f291e11f4a3d82d79f97faa809eb,

title = "Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies",

abstract = "Estimation of the daylight level for any point within an interior space is essential to daylighting designs and assessments. In 2003, the CIE adopted a range of 15 skies as international standard models that represent the actual skies of many places and cover the whole probable spectrum of skies. In many urban cities, the external obstructions may significantly reduce the amount of daylight entering to the indoor space. Previously, we developed a number of calculation tools to predict daylight illuminance for rooms facing different orientations under various CIE Standard Skies. This paper presents the work on the calculation of the PDF, ADF and VDF under various overcast and non-overcast obstructed skies. Calculation procedures are demonstrated. Characteristics of the findings and design implications are discussed.",

keywords = "CIE Standard Skies, Point Daylight Factor, Average Daylight Factor, Vertical Daylight Factor",

author = "Shuyang LI and LI, \{Danny H W\} and Wenqiang CHEN",

year = "2019",

month = sep,

doi = "10.26868/25222708.2019.210943",

language = "English",

isbn = "978-1-7750520-1-2",

series = "Proceedings of the International Building Performance Simulation Association",

publisher = "International Building Performance Association (IBPSA)",

pages = "1177--1182",

editor = "V. Corrado and E. Fabrizio and A. Gasparella",

booktitle = "Proceedings of Building Simulation 2019",

note = "Building Simulation 2019 - 16th Conference of IBPSA (BS 2019) ; Conference date: 02-09-2019 Through 04-09-2019",

url = "http://buildingsimulation2019.org/",

}

LI, S , LI, DHW & CHEN, W 2019, Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies. in V Corrado, E Fabrizio & A Gasparella (eds), Proceedings of Building Simulation 2019: 16th Conference of IBPSA. Proceedings of the International Building Performance Simulation Association, vol. 16, International Building Performance Association (IBPSA), pp. 1177-1182, Building Simulation 2019 - 16th Conference of IBPSA (BS 2019), Rome, Italy, 2/09/19. https://doi.org/10.26868/25222708.2019.210943

Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies. / LI, Shuyang ; LI, Danny H W ; CHEN, Wenqiang.
Proceedings of Building Simulation 2019: 16th Conference of IBPSA. ed. / V. Corrado; E. Fabrizio; A. Gasparella. International Building Performance Association (IBPSA), 2019. p. 1177-1182 (Proceedings of the International Building Performance Simulation Association; Vol. 16).

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

T1 - Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies

AU - LI, Shuyang

AU - LI, Danny H W

AU - CHEN, Wenqiang

PY - 2019/9

Y1 - 2019/9

N2 - Estimation of the daylight level for any point within an interior space is essential to daylighting designs and assessments. In 2003, the CIE adopted a range of 15 skies as international standard models that represent the actual skies of many places and cover the whole probable spectrum of skies. In many urban cities, the external obstructions may significantly reduce the amount of daylight entering to the indoor space. Previously, we developed a number of calculation tools to predict daylight illuminance for rooms facing different orientations under various CIE Standard Skies. This paper presents the work on the calculation of the PDF, ADF and VDF under various overcast and non-overcast obstructed skies. Calculation procedures are demonstrated. Characteristics of the findings and design implications are discussed.

AB - Estimation of the daylight level for any point within an interior space is essential to daylighting designs and assessments. In 2003, the CIE adopted a range of 15 skies as international standard models that represent the actual skies of many places and cover the whole probable spectrum of skies. In many urban cities, the external obstructions may significantly reduce the amount of daylight entering to the indoor space. Previously, we developed a number of calculation tools to predict daylight illuminance for rooms facing different orientations under various CIE Standard Skies. This paper presents the work on the calculation of the PDF, ADF and VDF under various overcast and non-overcast obstructed skies. Calculation procedures are demonstrated. Characteristics of the findings and design implications are discussed.

KW - CIE Standard Skies

KW - Point Daylight Factor

KW - Average Daylight Factor

KW - Vertical Daylight Factor

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85107491269&origin=recordpage

U2 - 10.26868/25222708.2019.210943

DO - 10.26868/25222708.2019.210943

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 978-1-7750520-1-2

T3 - Proceedings of the International Building Performance Simulation Association

SP - 1177

EP - 1182

BT - Proceedings of Building Simulation 2019

A2 - Corrado, V.

A2 - Fabrizio, E.

A2 - Gasparella, A.

PB - International Building Performance Association (IBPSA)

T2 - Building Simulation 2019 - 16th Conference of IBPSA (BS 2019)

Y2 - 2 September 2019 through 4 September 2019

ER -

LI S , LI DHW , CHEN W. Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies. In Corrado V, Fabrizio E, Gasparella A, editors, Proceedings of Building Simulation 2019: 16th Conference of IBPSA. International Building Performance Association (IBPSA). 2019. p. 1177-1182. (Proceedings of the International Building Performance Simulation Association). doi: 10.26868/25222708.2019.210943

Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies

Abstract

Publication series

Conference

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Formulation of Daylight Factor Based Metrics Under All Sky Conditions for Building Daylighting Design

Cite this

Estimation of Point Daylight Factor (PDF) Average Daylight Factor (ADF) and Vertical Daylight Factor (VDF) under various obstructed CIE Standard Skies

Abstract

Publication series

Conference

Research Keywords

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Student theses

Formulation of Daylight Factor Based Metrics Under All Sky Conditions for Building Daylighting Design

Cite this