This paper presents a set of daylighting programs that can be run on a TI-59 hand calculator. The paper gives the program listings, the step-by-step procedures for using the programs, worksheets, and a worked sample problem.

The programs calculate interior horizontal illumination levels or daylight factors from a window. The user can specify the location of the calculation point, or, if a printer is available, the locations of a grid of points. Calculations can be performed for both CIE clear and overcast sky conditions.

The direct sky component calculation uses Riveros approximation for window transmission. The interreflected component calculation uses a split-flux approximation.

1 aBryan, Harvey, J.1 aClear, Robert, D.1 aRosen, James1 aSelkowitz, Stephen, E. uhttps://buildings.lbl.gov/publications/quicklite-1-daylighting-program-ti-5901095nas a2200169 4500008004100000024001600041245006200057210005800119260002600177300001200203520054700215100002200762700002000784700002300804700001700827856008100844 1981 eng d aEEB-W-81-1900aThe Use of Physical Scale Models for Daylighting Analysis0 aUse of Physical Scale Models for Daylighting Analysis aPortland, ORc09/1981 a865-8693 aA process is described for determining the quantitative and qualitative features of a proposed daylighting design using physical scale models. The paper presents and discusses in detail several issues (i.e., modeling techniques, testing, measurement, visual analysis and photography) that must be resolved before physical scale modeling can be undertaken. Finally, a physical scale modeling case study is presented which illustrates many of the issues outlined as well as a photographic sequence of the physical scale modeling process.

1 aBryan, Harvey, J.1 aLohr, Alexander1 aMathis, Christophe1 aRosen, James uhttps://buildings.lbl.gov/publications/use-physical-scale-models-daylighting01223nas a2200145 4500008004100000050001400041245008300055210006900138300001200207490001200219520072900231100002200960700002200982856007301004 1980 eng d aLBL-1168700aCalculating Interior Daylight Illumination with a Programmable Hand Calculator0 aCalculating Interior Daylight Illumination with a Programmable H a219-2270 v07/19813 aA 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 lEclairage) 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.

1 aBryan, Harvey, J.1 aClear, Robert, D. uhttps://buildings.lbl.gov/publications/calculating-interior-daylight01184nas a2200133 4500008004100000050001400041245006200055210006000117260002500177520073000202100002200932700002200954856007400976 1980 eng d aLBL-1118600aA Procedure for Calculating Interior Daylight Ilumination0 aProcedure for Calculating Interior Daylight Ilumination aAmherst, MAc10/19803 aA 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 l'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.

1 aBryan, Harvey, J.1 aClear, Robert, D. uhttps://buildings.lbl.gov/publications/procedure-calculating-interior01243nas a2200121 4500008004100000050001300041245008400054210006900138260003100207520078500238100002201023856007601045 1979 eng d aLBL-904800aA Simplified Procedure for Calculating the Effects of Daylight from Clear Skies0 aSimplified Procedure for Calculating the Effects of Daylight fro aAtlantic City, NJc09/19793 aA simplified procedure is described for calculating daylight illumination at any point within a room under clear sky conditions, which is consistent with the CIE recommended daylight factor method. The calculation procedure used here separates the light reaching the point being considered into three components; (1) light directly from the sky, (2) light after reflection from external, and (3) internal surfaces. Graphs and tables are developed for these components in order to evolve a calculation procedure which is simple to apply rather than lengthy direct computation from first principles. Finally, a validation case study is presented in order to demonstrate the accuracy of the proposed calculation procedure and to give readers a direct reference for future use.

1 aBryan, Harvey, J. uhttps://buildings.lbl.gov/publications/simplified-procedure-calculating