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Experimental evaluation of a wind turbine's energy dependence on air density

Fundamentally, all the major sources of renewable energy, such as solar, biomass, hydropower, and wind depend on the sun's radiation. An experimental evaluation of a changing air density impact on a small wind turbine's output power was investigated. The focus was first on deriving the theoretical wind power, followed by the actual extractable power in line with “Betz law.” Second, the laboratory-based experiment utilizing the “leXsolar” wind equipment was set up according to the manual. Results showed that by using some “base values,” including an air density of 1.195 kg/m3 at standard atmospheric pressure, a wind speed calibrated at 4.85 m/s, and an ambient temperature of 22C, the output voltage and current were 1.74 V and 45.2 mA, respectively. A Spreadsheet software was then utilized to fill in the missing values starting from zero to “base values,” and beyond. Finally, counter-intuitive results were observed as both theoretical and actual powers yielded a positive slope while the air density decreased with increasing temperature.