Towards Global Certification of Solar Collectors

Nanofluid optical property characterization: towards efficient direct absorption solar collectors

Suspensions of nanoparticles (i.e., particles with diameters < 100 nm) in liquids, termed nanofluids, show remarkable thermal and optical property changes from the base liquid at low particle loadings. Recent studies also indicate that selected nanofluids may improve the efficiency of direct absorption solar thermal collectors. To determine the effectiveness of nanofluids in solar applications,...

Low Temperature Solar Collectors

Exergy Analysis of Flat Plate Solar Collectors

This study proposes the concept of the local heat loss coefficient and examines the calculation method for the average heat loss coefficient and the average absorber plate temperature. It also presents an exergy analysis model of flat plate collectors, considering non-uniformity in temperature distribution along the absorber plate. The computation results agree well with experimental data. The ...

Evaluation of solar-chimney power plants with multiple-angle collectors

Solar chimney power plants are plants based on solar thermal power including three parts of collector, chimney and turbine, which is able to produce electrical energy. One of the effective parameters in increasing the power production is the collector angles versus horizon. In the present study, a numerical analysis of a solar chimney power plant for different angles of the collector (divergent...

Photon Collection Efficiency of Fluorescent Solar Collectors

Photon collection efficiency of fluorescent collectors is examined experimentally and by modelling, with a view to assess the potential of this attractive solar energy technology. The edge fluorescence of single dye collectors based on Rhodamine 6G and Coumarin 540A, manufactured by a simple fabrication technique, is investigated in detail. A novel technique for determination of the collection ...