Future Façades with a chamber of 12mm filled with air and rear glass of 4+4mm float glass with LowE coating. The total power installed is 27.35kWp
Fig. 2: Comparison between the Solar Photovoltaic glass and conventional glass (Source: Onyxsolar)
Fig. 1 shows a photovoltaic power potential map. We need to focus on capturing the solar to harvest energy. Building façades with conventional curtain glazing can be replaced with Solar Photovoltaic Glass to harvest energy. Fig. 2 shows the comparison between solar photovoltaic glass and conventional glass. Solar photovoltaic glasses are of two types: Amorphous silicon glass and Crystalline silicon glass, both are available as opaque and with various levels of transparency. The peak power generated by each type also varies, hence while selecting the type of glass, due care needs to be provided. The below image shows the look and feel of the Amorphous and Crystalline silicon PV glass. Whereas Amorphous glass can be proposed for the area where we require more aesthetics - like the façade area, crystalline can be proposed where it doesn’t require more aesthetics - like the skylight area. Fig. 5 shows the proposed office building with the solar photovoltaic facade, total integration area considered is 972 Sq m with amorphous silicon technology having a 30% transparency degree. Glass configuration is 6+3+6mm
Below details - FIg.3 & 4 - is the outcome of the feasibility study: l Electricity generated in 35 years: 511,193 kWh l Enough energy to feed 1004 light points working 4 hours per day for 35 years l Enough energy to prevent the emission of 438 tons of carbon dioxide
Fig. 3: Solar photovoltaic glasses are of two types: Amorphous silicon glass and Crystalline silicon glass, both are available as opaque and with various levels of transparency
WFM | JAN - FEB 2022
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