Solar photovoltaic (PV) technology has a lower adoption rate than expected because of different weather conditions (sunny, cloudy, windy, rainy, and stormy) high material manufacturing costs. To overcome the barriers to adoption, many researchers are developing methods increase its performance. A photovoltaic–thermal absorber hybrid system may shift performance, but become more efficient, could...

A heat-recovery ventilator (HRV) effectively conducts ventilation by recovering waste heat from indoors to outdoors during heating periods. However, dew condensation associated with the HRV system may arise due to the difference between the indoor temperature and the very low outdoor temperature in winter, and this can decrease the heat exchange efficiency. These problems can be solved by the p...

introduction electrical performance of solar cells decreases with increasing cell temperature, basically because of growth of the internal charge carrier recombination rates, caused by increased carrier concentrations. hybrid photovoltaic/thermal (pvt) systems produce electrical and thermal energy simultaneously. pvt solar collectors convert the heat generated in the solar cells to low temperat...

The effect of the volume flow rate of the heat transfer fluid (air) on the thermal parameters of the solar air collector with a single air pass without using fins under the absorbing plate have been investigated experimentally and theoretically. We use a new design of solar air collector which aims to optimize these parameters in the region cited above. Our solar air collector was realized at t...

Within the context of pilot and air traffic controller selection tests the Psychomotor Vigilance Test (PVT, Dinges & Powell, 1985) was evaluated for its underlying sources of variance. The PVT is a simple visual reaction time task, which is well established as a measure of alertness during sustained operations. It provides scores for mean reaction times and number of lapses. While the PVT has p...