Figure 3. Efficiency collector as a function of ∆T/I the day 20/07/12, and flow velocity 1.5 m/sec

From

Experimental Development of Solar Collector of Unconventional Air

J. O. Almirón, M. A. Lara

Sustainable Energy. 2016, 4(1), 17-27 doi:10.12691/rse-4-1-3