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Title: Design Aids for Supplementary Lighting Design in India
Authors: Lala S.
Jain K.
Kumar A.
Kumar A.
Rajasekar, Elangovan
Kulkarni K.
Published in: Journal of The Institution of Engineers (India): Series A
Abstract: This paper presents a design aid which will help to integrate daylight in indoor lighting and optimize the use of artificial lighting in buildings for different climate zones in India. An index, average daylight factor is utilized for calculating the incident useful daylight in an indoor space. These calculations are further used in deriving nomographs which can help to determine the optimum percentage of fenestration/floor area for a typical small office. The use of these nomographs will be advantageous in the initial stages of planning an energy-efficient building by optimizing on the measure of fenestration area. The results obtained from the nomographs are compared with the simulation results from the VELUX daylight visualizer tool and are found to be within acceptable limits of error (< 10%).
Citation: Journal of The Institution of Engineers (India): Series A(2020), 101(4): 643-656
Issue Date: 2020
Publisher: Springer
Keywords: Average daylight factor (ADF)
Daylight integration
Design aids
Energy efficiency
ISSN: 22502149
Author Scopus IDs: 56665325800
Author Affiliations: Lala, S., CSIR-Central Building Research Institute (CBRI), Roorkee, Uttarakhand, India
Jain, K., CSIR-Central Building Research Institute (CBRI), Roorkee, Uttarakhand, India
Kumar, A., CSIR-Central Building Research Institute (CBRI), Roorkee, Uttarakhand, India
Funding Details: Indo-US Science and Technology Forum, IUSSTF. The work presented in this paper is part of the research objectives defined in Indo-US collaboration project (GAP-0806) titled ?Improving Building Energy Efficiency? as a part of the task for updating the existing guidelines of daylight design in India. T
Corresponding Author: Lala, S.;CSIR-Central Building Research Institute (CBRI)India; email:
Appears in Collections:Journal Publications [AR]

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