Calculating interior daylight illumination with a programmable hand calculator

Harvey J. Bryan; Robert D. Clear

doi:10.1080/00994480.1980.10748615

Calculating interior daylight illumination with a programmable hand calculator

Harvey J. Bryan, Robert D. Clear

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

A procedure is described for calculating interior daylight illumination using an inexpensive programmable hand calculator. The proposed procedure calculates illumination at any point within a room utilizing sky luminance distribution functions that are consistent with the CIE (Commission Internationale de I’Eclairage) Overcast and Clear Sky functions. This procedure separates the light reaching the point being considered into three components, these being (a) light directly from the sky, (b) light after being reflected from external, and (c) internal surfaces. Finally, two examples are presented in order to demonstrate the proposed procedure and indicate the speed with which the calculations may be performed.

Original language	English (US)
Pages (from-to)	219-227
Number of pages	9
Journal	Journal of the Illuminating Engineering Society
Volume	10
Issue number	4
DOIs	https://doi.org/10.1080/00994480.1980.10748615
State	Published - Jul 1981
Externally published	Yes

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1080/00994480.1980.10748615

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title = "Calculating interior daylight illumination with a programmable hand calculator",

abstract = "A procedure is described for calculating interior daylight illumination using an inexpensive programmable hand calculator. The proposed procedure calculates illumination at any point within a room utilizing sky luminance distribution functions that are consistent with the CIE (Commission Internationale de I{\textquoteright}Eclairage) Overcast and Clear Sky functions. This procedure separates the light reaching the point being considered into three components, these being (a) light directly from the sky, (b) light after being reflected from external, and (c) internal surfaces. Finally, two examples are presented in order to demonstrate the proposed procedure and indicate the speed with which the calculations may be performed.",

author = "Bryan, {Harvey J.} and Clear, {Robert D.}",

note = "Funding Information: The work described in this report was funded by the Office of Buildings and Community Systems, Assistant Secretary for Conservation and Solar Applications of the U.S. Department of Energy under Contract No. W-7405-ENG-48.",

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AU - Clear, Robert D.

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N2 - A procedure is described for calculating interior daylight illumination using an inexpensive programmable hand calculator. The proposed procedure calculates illumination at any point within a room utilizing sky luminance distribution functions that are consistent with the CIE (Commission Internationale de I’Eclairage) Overcast and Clear Sky functions. This procedure separates the light reaching the point being considered into three components, these being (a) light directly from the sky, (b) light after being reflected from external, and (c) internal surfaces. Finally, two examples are presented in order to demonstrate the proposed procedure and indicate the speed with which the calculations may be performed.

AB - A procedure is described for calculating interior daylight illumination using an inexpensive programmable hand calculator. The proposed procedure calculates illumination at any point within a room utilizing sky luminance distribution functions that are consistent with the CIE (Commission Internationale de I’Eclairage) Overcast and Clear Sky functions. This procedure separates the light reaching the point being considered into three components, these being (a) light directly from the sky, (b) light after being reflected from external, and (c) internal surfaces. Finally, two examples are presented in order to demonstrate the proposed procedure and indicate the speed with which the calculations may be performed.

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Calculating interior daylight illumination with a programmable hand calculator

Abstract

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