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SHADOW FEATURES

  • Calculates Shaded Area of Any Glass Scenario
  • Plots Shading Patterns on Glass
  • Computes Shaded and Unshaded Glass Solar Loads
  • Allows Input of Any Shape or Size Windows
  • Allows for Simple and Complex Shading Devices
  • Provides Plots and Reports on Screen or Printer
  • Produces Optional Auto-Cad Drawing Files
  • Allows for both English and Metric Units
  • Full Screen Input and Editing Features
  • On-Line Window Help Screens
  • Instantaneous Input Error Checking
  • Disk Storage And Retrieval of All Input Data

 

Glass Shading Analysis
The Elite Software SHADOW DOS based program calculates shaded glass areas and solar loads for any window and shading device configuration conceivable. SHADOW is a very graphically oriented program as many high resolution plots are always available on screen allowing you to review the input and output data. SHADOW is ideal for evaluating the effect of using standard shading devices like overhangs, fins, louvers, and awnings. Besides standard devices, SHADOW can also evaluate highly irregular shaped devices like a tree or adjacent building for example. SHADOW not only calculates the amount of shaded glass at any hour, but it also calculates the solar heat gain at each hour with and with out shading so that energy savings can be calculated from using the shading devices. This feature allows the designer to decide whether the energy savings from the extra glass shading are worth the cost of shading devices.

PROGRAM OUTPUT

The SHADOW Program provides five basic types of reports that can be printed either to the screen or the printer. The first report lists client data, file information, and general project data. The second report is a glass input data report that reflects all input data entered for each glass section. The third report is a shading device input data report that reflects all data specified for each shading device. The fourth report is a detailed shading report that gives a plot of the shading pattern on the glass at a specific hour along with all other information concerning shaded and unshaded areas, angles, and solar loads. The final report is a shading analysis summary report that includes the same information as a detailed report except summarized over a specified time period. The many high resolution plots displayed on screen can be printed or written to disk in an AutoCad drawing file.

CALCULATION METHOD

SHADOW uses both simple trigonometry and complex finite analysis techniques to calculate shaded glass areas. For any given glass scenario SHADOW first grids the window into thousands of tiny rectangles. Next, each shading device is gridded into similarly small rectangles, but additionally the coordinates to the center point of each rectangle are also computed. SHADOW then projects lines with the same angles as the sun from each point on every shading device towards the window. If a projected line is found to intersect the window, then the tiny rectangle where the intersection occurs is said to be shaded. SHADOW continues this process until lines from all points on all shading devices have been projected. If a projected line intersects a rectangle that is already shaded, SHADOW detects this and therefore does not compute additional erroneous shaded areas.

PROGRAM INPUT

The SHADOW Program uses full screen editing features that provide a simple fill in the blank input procedure. All input data is checked at the time of entry so that no improper data can be entered. Four types of data are requested: general project data, glass material data, glass shape and position data, and shading device data. The general project data includes the project name and number, the project location with degrees latitude and longitude, ground reflectance, client information, and any general remarks. The glass material data includes specific information on the glass type, U-Factor, shading coefficient, and number of panes. The glass shape and position data includes the physical dimensions of each glass section (which can be any shape desired including rectangles, circles, arches, and ellipses), the direction the glass faces, and the time span desired for the shading analysis. The shading device input data not only allows you to define standard overhangs, fins, louvers, and awnings, but also devices of any conceivable shape and size. In fact, an adjacent building or even a tree can be defined as a shading device. Each glass section can have up to 10 different shading devices defined for it.

SYSTEM REQUIREMENTS

Elite's DOS software application SHADOW is compatible with all Windows Operating Systems.(Windows 95, 98, ME, NT 4.0, 2000, and XP)  The minimum hardware requirements to run our application are the same as the minimum hardware requirements to run the operating system which the application is installed on click here for details. Additionally, 1 MB of hard disk space is required to install and run SHADOW.


SAMPLE REPORT 1




                                                                         PAGE 1
SHADOW     SHADOW     SHADOW                     PROJECT:  SIMPLE SHADING STUDY
ELITE  SOFTWARE  DEVELOPMENT                     CLIENT:     MR. AND MRS. JONES
BRYAN,                 TEXAS                     DATE:            FEB. 15, 1988
ELITE SOFTWARE SHADING PROGRAM                   DESIGNER:            YOUR NAME


GENERAL PROJECT INFORMATION:
PROJECT NAME:             SIMPLE SHADING STUDY                
PROJECT NUMBER:           1                                   
PROJECT DATE:             FEB. 15, 1988                       
PROJECT DESIGNER:         YOUR NAME                           
CLIENT:                   MR. AND MRS. JONES                  
                          1234 1ST STREET                     
                          HOUSTON, TEXAS                      

PROJECT FILE INFORMATION:
PROJECT FILE NAME:        SAMPLE.SHA                          
AUTOCAD FILE NAME:        SAMPLE.DXF                          


PROJECT REMARKS:
REMARKS ABOUT PROJECT
SPECIFICATIONS ABOUT THE GLASS SECTIONS.
SPECIFICATIONS ABOUT THE SHADING DEVICES.



SAMPLE REPORT 2



****** SHADING CALCULATIONS PROGRAM  BY  ELITE SOFTWARE DEVELOPMENT INC. ******
SHADOW SHADOW SHADOW                                               BRYAN, TEXAS
SIMPLE SHADING STUDY             FEB. 15, 1988                           PAGE 2
*************************** GLASS INPUT DATA REPORT ***************************
GLASS GENERAL INFORMATION:
GLASS NAME:                        TYPICAL WINDOW
TIME:                                  SOLAR TIME
DAYLIGHT SAVINGS TIME:                 CONSIDERED
DEGREES LATITUDE:                           40.00
DEGREES LONGITUDE:                          83.00
GLASS NORTH AZIMUTH:                       180.00
GLASS ORIENTATION:                          SOUTH
TIME ZONE:                                      6
SKY CLEARNESS COEFFICIENT:                   1.00
GROUND REFLECTANCE:                          0.20
EXTINCTION COEF.(k) x THICKNESS(l):          0.05
NUMBER OF GLASS PANELS:                         1
GLASS U-FACTOR:                             1.000
GLASS SHADING COEFFICIENT:                  0.900
PRECISION LEVEL (X DIRECTION):                 20
PRECISION LEVEL (Y DIRECTION):                 20
GLASS SHADING DEVICES STATUS AND DESCRIPTION:
-------------------------------------------------------------------------------
DEVICE           DEVICE               DEVICE
NUMBER           STATUS               DESCRIPTION
-------------------------------------------------------------------------------
  1              1 - ACTIVE           RECTANGULAR HORIZONTAL FIN               
  2              1 - ACTIVE           RECTANGULAR VERTICAL FIN                 
  3              1 - ACTIVE           RECTANGULAR VERTICAL FIN                 
  4              0 - NOT ACTIVE                                                
  5              0 - NOT ACTIVE                                                
  6              0 - NOT ACTIVE                                                
  7              0 - NOT ACTIVE                                                
  8              0 - NOT ACTIVE                                                
  9              0 - NOT ACTIVE                                                
 10              0 - NOT ACTIVE                                                
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ANALYSIS STUDY PERIODS AND AVERAGE TEMPERATURES:
-------------------------------------------------------------------------------
START  START  START       END    END    END     INCREMENTS     AVG TEMPERATURES
MONTH    DAY   HOUR     MONTH    DAY   HOUR     DAYS  MINS     OUTDRS (F) INDRS
-------------------------------------------------------------------------------
    8     21     12         8     21     12       1     60      90.00     75.00
    1      1      0         1      1      0       0      0       0.00      0.00
    1      1      0         1      1      0       0      0       0.00      0.00
    1      1      0         1      1      0       0      0       0.00      0.00
    1      1      0         1      1      0       0      0       0.00      0.00
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SAMPLE REPORT 3



****** SHADING CALCULATIONS PROGRAM  BY  ELITE SOFTWARE DEVELOPMENT INC. ******
SHADOW SHADOW SHADOW                                               BRYAN, TEXAS
SIMPLE SHADING STUDY             FEB. 15, 1988                           PAGE 7
************************* SUMMARY OF SHADING ANALYSIS *************************
PROJECT NAME:  SIMPLE SHADING STUDY              GLASS NAME:     TYPICAL WINDOW
-------------------------------------------------------------------------------
GLASS ORIENT.    AZIMUTH  TOTAL  AREA   T out.(F)  SOLAR W  SHAD  TOTAL W  SHAD
SUN ORIENT.     ALTITUDE  SHADED AREA   T in. (F)  SOLAR WO SHAD  TOTAL WO SHAD
DATE & TIME         SHGF     % SHADED  CONDUCTIVE    % REDUCTION    % REDUCTION
               (1)(2)(3)    (4)(5)(6)   (7)(8)(9)   (10)(11)(12)   (13)(14)(15)
-------------------------------------------------------------------------------
SOUTH               0.00       864.00       90.00         456.03         546.03
SOUTH              62.27       540.00       75.00         804.67         894.67
Aug 21 12:35 PM    76.01        62.5%       90.00          43.33          38.97
 
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SAMPLE REPORT 4



****** SHADING CALCULATIONS PROGRAM  BY  ELITE SOFTWARE DEVELOPMENT INC. ******
SHADOW SHADOW SHADOW                                               BRYAN, TEXAS
SIMPLE SHADING STUDY             FEB. 15, 1988                           PAGE 7
*************************** DETAILED SHADING REPORT ***************************
SHADING PATTERN:          TYPICAL WINDOW   TIME:             Aug 21  12 : 00 PM
 S H A D E D S H A D E D S H A D E D S H   Reference  View:             Outside
 A D E D S H A D E D S H A D E D S H A D   Glass Orientation:                 S
 E D S H A D E D S H A D E D S H A D E D   
                                           AREAS (square inches)
 S H A D E D S H A D E D S H A D E D S H   Glass area:                   864.00
 A D E D S H A D E D S H A D E D S H A D   Shaded area:                  540.00
 E D S H A D E D S H A D E D S H A D E D   % Shaded:                      62.50
 S H A D E D S H A D E D S H A D E D S H   
                                           ANGLES (degrees)
 A D E D S H A D E D S H A D E D S H A D   Glass True Azimuth:             0.00
 E D S H A D E D S H A D E D S H A D E D   Sun Altitude:                  62.27
 S H A D E D S H A D E D S H A D E D S H   
 A D E D S H A D E D S H A D E D S H A D   SOLAR LOADS (Btu per hour)
                                           Diffuse Load:                 274.28
 E D S H A D E D S H A D E D S H A D E D   Direct  Load:                 232.42
 S H A D E D S H A D E D S H A D E D S H   Solar Heat Gain Factor:        76.01
 . . . . . . . . . . . . . . . . . . . .   Total Solar Load w  shad:     456.03
 . . . . . . . . . . . . . . . . . . . .   Total Solar Load w/o shad:    804.67
                                           Percent Reduction:             43.33
 . . . . . . . . . . . . . . . . . . . .   
 . . . . . . . . . . . . . . . . . . . .   TOTAL LOADS (Btu per hour)
 . . . . . . . . . . . . . . . . . . . .   Conductive Load:               90.00
 . . . . . . . . . . . . . . . . . . . .   Total Load w shad.:           546.03
                                           Total Load w/o shad.:         894.67
 . . . . . . . . . . . . . . . . . . . .   Percent Reduction:             38.97

                          REPORT HEADING EXPLANATIONS                          
-------------------------------------------------------------------------------
(1)  TRUE GLASS NORTH AZIMUTH OR SUN AZIMUTH - GLASS AZIMUTH ........ (DEGREES)
(2)  ALTITUDE ANGLE OF THE SUN ...................................... (DEGREES)
(3)  SOLAR HEAT GAIN FACTOR ...................................... (BTU/HR FT2)
(4)  TOTAL AREA OF GLASS ......................................... (SQUARE IN.)
(5)  SHADED AREA OF GLASS ........................................ (SQUARE IN.)
(6)  PERCENT OF GLASS AREA COVERED BY SHADOW .............................. (%)
(7)  AVERAGE DRY BULB OUTDOORS TEMPERATURE ............... (DEGREES FAHRENHEIT)
(8)  AVERAGE DRY BULB INDOORS TEMPERATURE ................ (DEGREES FAHRENHEIT)
(9)  CONDUCTIVE LOAD DUE TO TEMPERATURE DIFFERENTIAL ................. (BTU/HR)
(10) TOTAL SOLAR LOAD CONSIDERING  THE EFFECT OF SHADING DEVICES ..... (BTU/HR)
(11) TOTAL SOLAR LOAD DISREGARDING THE EFFECT OF SHADING DEVICES ..... (BTU/HR)
(12) PERCENT REDUCTION OF SOLAR LOAD DUE TO PRESENCE OF SHADING DEVICES ... (%)
(13) CONDUCTIVE+SOLAR LOADS CONSIDERING  THE EFFECT OF SHADING DEVICES (BTU/HR)
(14) CONDUCTIVE+SOLAR LOADS DISREGARDING THE EFFECT OF SHADING DEVICES (BTU/HR)
(15) REDUCTION OF CONDUCTIVE+SOLAR LOADS DUE TO PRESENCE OF SHADING DEVICES (%)
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