A box-type solar heater was designed, constructed, and used to determine the effect of solar heating on quality of domestic roof-harvested rainwater (DRHRW). During testing, naturally contaminated DRHRW was harvested in Ibadan, Nigeria, and released into the system at 93.96 Lh(-1) (2.61 × 10(-5) m(3) s(-1)) in a continuous flow process. Water temperatures at inlet, within the heating chamber, a...

I this Viewpoint, we show that it is sufficiently easy and cheap to fabricate a perovskite solar cell that this can be done as an undergraduate laboratory experiment. Solar cells, which have been around since the 1950s, are considered as a prominent source of renewable energy in the future. Conventional solar cells, which are used in rooftop applications, are based on single-crystal silicon and...

This paper inspects possible influence of solar cycles on earthquakes through of statistical analyses. We also discussed the mechanism that would drive the occurrence of increasing of earthquakes during solar maxima. The study was based on worldwide earthquakes events during approximately four hundred years (16002010).The increase of earthquakes events followed the Maxima of Solar cycle, and al...

Unglazed transpired collectors or UTC (also known as perforated collectors) are a relatively new development in solar collector technology, introduced in the early nineties for ventilation air heating. These collectors are used in several large buildings in Canada, USA and Europe, effecting considerable savings in energy and heating costs. Transpired collectors are a potential replacement for g...

A solar dryer hybrid photovoltaic thermal (PV/T) system has been designed, built and its performance studied. This research aims to develop a stand-alone dyer system, portable less maintenance. consists of three main parts; PV/T with configuration-Z absorber plate, multi-direction collector cross plate drying chamber. Solar which was designed in the is called because radiation does not get heat...

Solar air heaters (SAHs) are used in a wide variety of household and industrial applications. Smooth absorber plate traditional solar duct has low value convective heat transfer coefficient. Enhancing the thermal efficiency SAHs can be achieved by using artificial roughness ribs placed on plate. However, this use results increasing pressure loss due to friction between airflow roughened surface...

The global trends for the rapid growth of distributed solar heat and power in the last decade will likely continue as the levelized cost of production for these technologies continues to decline. To be able to compare the economic potential of solar technologies one must first quantify the types and amount of solar resource that each technology can utilize; second, estimate the technological pe...