earticle

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The purpose of this study is to develop a computerized shading simulation program considering solar radiation and to verify
its numerical and graphical effectiveness in fenestration system design. Even though the thermal effect of the transmitted solar
radiation through fenestration is understood as one of critical factors in building design, it is hardly considered in early design
stage because of difficulty in its concept and calculation process. To be widely used by architectural designers in their
architectural projects, the program should provide user-friendly graphical interface which can clearly represent the thermal effect
of their design as well as proper guideline that can provide accurate simulation results without big burden of user input.
The Shaded Fenestration Design(SFD) program has been developed as an energy-effective shading device and window system
design program considering effects of shaded solar radiation. For the validation of the program, a physical test box was specially
designed and tested to show the accuracy of the program. The comparative tests with widely used computer simulation
program(DOE-2) showed that the SFD program with the HDKR model provided more reliable results than DOE-2 program.