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'Climate connectivity' in the daylight factor basis of building standards

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journal contribution
posted on 23.08.2016, 10:15 by John MardaljevicJohn Mardaljevic, J. Christoffersen
This paper describes a proposal for a daylight standard for CEN countries. It is now widely accepted in the research community, and increasingly so amongst practitioners, that the standards/guidelines for daylight in buildings are in need of upgrading. The essence of the proposal is that the `target' for daylight provision should be founded on the availability of daylight as determined from climate files. The proposal is in fact a refinement of an approach originally described in a CIE document from 1970, and which appears to have been largely overlooked since then. The proposal states that a design should achieve a target daylight factor at workplane height across a specified percentage of the relevant floor area for half of the daylight hours in the year, where the target daylight factor is based on the provision of 300 lux. A key feature of the refinements are the formulation of the methodology such that the likelihood for misinterpretation and `game-playing' is greatly reduced, if not eliminated altogether. The method, founded on cumulative diffuse illuminance curves, could be introduced relatively swiftly since it requires only modest enhancement of existing daylight prediction tools. In addition, the proposal will provide a sound `footing' for eventual progression to evaluations founded on full-blown climate-based daylight modelling.

History

School

  • Architecture, Building and Civil Engineering

Published in

Building and Environment

Citation

MARDALJEVIC, J. and CHRISTOFFERSEN, J., 2017. 'Climate connectivity' in the daylight factor basis of building standards. Building and Environment, 113, pp. 200-209.

Publisher

© Elsevier

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

06/08/2016

Publication date

2017

Notes

This paper was accepted for publication in the journal Building and Environment and the definitive published version is available at http://dx.doi.org/10.1016/j.buildenv.2016.08.009

ISSN

0360-1323

eISSN

1873-684X

Language

en

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