Concentrated solar energy is a promising source of energy which is currently attracting many efforts to enhance its exploitation. In particular, parabolic trough collectors for low enthalpy processes is an emerging technology. Lately, many work is done focused on the improvement of these devices. One technique to achieve this is by augmenting the heat transfer in the receiver tube by inserting ...

Three alternatives for integrating a solar field with the bottoming cycle of a combined cycle plant are modeled: parabolic troughs with oil at intermediate and low cycle pressures and Fresnel linear collectors at low cycle pressure. It is assumed that the plant will always operate at nominal conditions, using post-combustion during the hours of no solar resource. A thermoeconomic study of the o...

An evacuated tube solar collector using therminol D-12 as heat transfer fluid coupled with parabolic trough is studied in this paper. An experimental set-up was constructed to study the performance of evacuated tube collector with therminol D-12 as heat transfer fluid. The parabolic trough is coupled with evacuated tube collector for better performance. In the traditional solar collectors water...

Due to their enhanced thermophysical properties, nanofluids have great potential for improving heat-transfer efficiency. Nanofluids are employed in various thermal applications the automotive industry, heat exchangers, solar power generation and more. Among of this technology, its use enhance transfer collectors appears promising. It is therefore not a surprise that has become popular research ...

The low efficiency of Collectors that absorb energy can be mentioned as one the drawbacks in solar cogeneration cycles. In present study, systems have been improved by adding porous media and Nanofluid to collectors. One advantage using nanomaterials is more while surface area reduced. this first, collectors are enhanced 90% porosity copper combined cooling, heating power (SCCHP). Second, diffe...