-Even though most variations of solar concentrators have been studied or built at some time or other, an important class of concentrators has been overlooked until very recently. These novel concentrators have been called ideal because of their optical properties, and an example, the compound parabolic concentrator, is being tested at Argonne National Laboratory. Ideal concentrators differ radi...

Concentrating solar systems use reflective surfaces to concentrate sunlight onto a small area, where it is absorbed and converted heat. Many classes of concentrating collectors such as Compound Parabolic Concentrators (CPCs), parabolic dish trough are available, each with different ratio maximum absorber temperature, depending on the type applications. A simplified 3D Concentrator (CPC) 2 rings...

Water samples of 0, 50, and 100 nephelometric turbidity units (NTU) spiked with fecal coliforms (107 CFU/ml) were exposed to natural sunshine in 1l quartz glass tubes fitted with rectors’ compound parabolic concentrators CPCS at two forms CPC1 (whit nanoparticle zinc oxide) and CPC2(without nanoparticle zinc oxide). The samples were characterized using the X-ray...

Abstract: In the present article, six symmetric compound parabolic solar concentrators (CPCs) with all-glass evacuated solar tubes (EST) as the receiver are designed, and a comparative study on their optical performance is performed based on theoretical analysis and ray-tracing simulations. In terms of optical loss through gaps of CPCs and optical efficiency averaged for radiation over the acce...

This paper explores the benefits and drawbacks of using carbon dioxide in solar thermal systems at medium and high operating temperatures. For medium temperatures, application of CO2 in non-imaging-optics based compound parabolic concentrators (CPC) combined with evacuated-tube collectors is studied. These collectors have been shown to obtain efficiencies higher than 40% operating at around 200...

The scarcity of freshwater especially in remote areas led the researcher to find alternative techniques produce suitable water for human everyday life; one technique is using solar energy. Water desalination systems depend on traditional energy resulting from use fossil fuels, which results their many environmental and health hazards. Solar important promising solutions crisis, as well develope...

The desire for inexpensive, high-speed wireless links has motivated recent interest in infrared free-space communication systems.15 As a medium for short-range wireless communication, infrared offers significant advantages over radio. The infrared spectrum represents an immense, unregulated bandwidth. Moreover, infrared radiation does not pass through walls, allowing the operation of at least o...

Electric vehicles (EVs) and photovoltaics (PVs) are new technologies that will play an important role in the transportation industry over next decade. Using solar panels on roofs of cars is one simplest ways to reduce fuel costs increase mobility electric vehicles. Solar can be charged anywhere under Sun without additional infrastructure, but problem size panel limited roof electricity conversi...