 Experimental investigation of transparent parabolic trough collector based on gas-phase nanofluidMarco Potenza, Marco Milanese, Gianpiero Colangelo and Arturo de Risi Applied Energy, 2017, vol. 203, issue C, 560-570 Abstract: An experimental study on new high temperature parabolic trough collector (PTC), with transparent receiver tube, based on gas-phase nanofluid, has been carried out for the first time in this work. Two-axes solar tracking PTC, with 4m2 reflecting surface has been realized. Besides, two coaxial quartz tubes, with vacuum in the inner space were used as receiver pipe, with air-dispersed CuO nano-powders as working fluid. The aim of this work was to investigate the technological issues related to the use of gas-based nanofluid coupled with transparent quartz receiver and to evaluate the performance of the first prototype, comparing numerical and experimental results. The experimental campaign highlighted a critical issue related to nanopowder deposition within the receiver pipe, due to humidity. Moreover, in a day of measurement, the fluid temperature higher than 145°C has been maintained for about 10h, reaching a maximum value of 180°C, with a mean efficiency of about 65%. Keywords: Parabolic trough collector; Nanoparticles; Gas-phase nanofluids; Transparent receiver tube (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:appene:v:203:y:2017:i:c:p:560-570 Ordering information: This journal article can be ordered from DOI: 10.1016/j.apenergy.2017.06.075 Access Statistics for this article Applied Energy is currently edited by J. Yan More articles in Applied Energy from Elsevier |
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