Adaptive Window Shade System to Maximize Solar Heat Gain

摘要: There is a need to access inexpensive renewable resources such as solar energy maintain constant desired indoor temperature. An automation system comprising two thermistor probes, LN272 8-pin integrated circuit operational amplifier, three single pole dual throw (SPDT) relays, and an electric motor was developed open close standard window shade. The necessary temperature difference switch the device in either direction recorded for multiple settings. fitted model shade system. Temperatures on both sides of were resulting heat flux calculated. It shown that automatic successful maintaining passive residence used testing with minimal energy. If this combined existing motorized shades buildings large surface area, it could significantly reduce costs associated heating cooling. Automatic Window Shades 2 Printed by Mathematica Students Introduction According United States Energy Information Administration, space air conditioning account 49 percent total consumption any given household seen Figure 1. A growing problem causing homeowners builders consider potential implementing new technologies amount required Windows serve major source unwanted loss during cold winter months well gain hot summer months. Although often overlooked merely privacy device, shade, when correctly, provides insulation keep within needed. Also, reflecting radiation months, prevents from entering through windows (Kotey, Wright, Collins, & Barnaby, 2009). Residence percent. These pie charts depict different demands usage their relative sizes area shaded blue represents heating, red (“U.s. information,” 2011). 3