RT Journal Article ID 1fd52978789b84e5 A1 Asnaghi, Abolfazl A1 Ladjevardi, S. M. A1 Izadkhast, P. S. A1 Kashani, A. H. T1 INVESTIGATION OF NANOFLUID APPLICATIONS IN DIRECT SOLAR ENERGY ABSORPTION JF Nanoscience and Technology: An International Journal JO NST YR 2012 FD 2013-10-10 VO 3 IS 4 SP 311 OP 332 K1 nanofluids K1 solar direct absorption K1 solar collectors K1 optical properties AB In the current study, applications of nanofluids in direct absorption and direct conversion of solar radiation into heat in volumetric solar receivers have been investigated. A numerical code is developed to simulate irradiation propagation, energy derivation, irradiation energy level, and temperature distribution in nanofluids. By considering different nanoparticles, efficiency of solar receivers in absorption of solar energy have been studied. Candidate nanoparticles are presented and their impacts on harvested solar energy, irradiation spectrum distributions, and irradiation energy level versus the depth of the flow in comparison with other nanofluids are investigated. Increased efficiency of collectors using nanoparticles, as well as increase in costs are evaluated. The results of this study show that pure water over the depth of one meter could absorb only 66% of incident irradiation energy, while by using nanoparticles it would be possible to absorb more than 90% of the incident irradiation energy over the depth of 10 cm. PB Begell House LK https://www.dl.begellhouse.com/journals/11e12455066dab5d,43dc555c3ae2d76e,1fd52978789b84e5.html