建筑采光和遮陽-許鵬-資料下載頁
2025-08-23 13:28本頁面
【正文】 orporate shading elements with windows ? Use horizontal window shapes ? Place view windows wisely. ? Locate windows near room surfaces (beams, walls) for good distribution—these surfaces help reflect and redistribute daylight. ? Windows on every orientation North: High quality consistent daylight with minimal heat gains, but thermal loss during heating conditions and associated fort problems. South: Good access to strong illumination (the original source), although varies through the day. Shading is “easy”. East and West: Shading is difficult. Shading is critical for fort on both sides and heat gain too, especially on the west. Windows facing generally north and south create the fewest problems. ? Don’t waste glazing area where it can’t be seen Blinds matters! 90% of buildings have operable fenestration controls, blinds, shades, louvers, curtains Daylighting simulation examples Blinds day lighting simulation Automated blinds control for hours when there is no direct sun, lowered for hours when there is direct sun are at 45 deg angle to block direct sun of a fully automated system Blinds control is an energy saving gold mine Blinds retrofits are easy to improve of design and product improvement ? Daylighting optimized blinds ? Blinds manufacturers don’t know the potential of their product for daylighting savings ? Everyone is focus on HVAC savings ? Just like glass/windows fet they are making a daylighting products cost retrofit item Split blinds, no cost ideas Separate the window functions with different operation schedules Daylight windows provide: Seasonal adjustment for solar redirection View windows provide: Occupant daily or hourly control for glare Reflective louvers acts as light shelf Automated blinds retrofit options Successful examples Genzyme Building reflective blinds facades operated to produce uniform daylighting persistent savings Time 9:30 12% 10:30 17% 11:30 26% 12:47 38% 14:20 32% 15:30 24% 16:30 16% 17:45 13% 18:15 7% % savings 方位：東 Real picture of daylighting control
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