A hybrid direct-absorption parabolic-trough solar collector combining both volumetric and surface absorption
Sign Up to like & getrecommendations! Published in 2020 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2020.116333
Abstract: Abstract By making the nanofluids separately flowing into two concentric segmentations in a direct-absorption parabolic-trough solar collector (DAPTSC), we recently showed that the dual-nanofluid DAPTSC with a semi-cylindrical reflective coating could reduce the heat loss… read more here.
Keywords: absorption; direct absorption; volumetric surface; surface absorption ... See more keywords
Ultrastable plasmonic nanofluids in optimized direct absorption solar collectors
Sign Up to like & getrecommendations! Published in 2019 at "Energy Conversion and Management"
DOI: 10.1016/j.enconman.2019.112010
Abstract: Abstract Nanofluids used in low-flux direct absorption solar collectors (DASCs) typically encounter critical stability issues due to long-term storage, elevated temperatures, high particle concentrations, and fouling from free surfactants. Here, we developed ultrastable nanofluids, and… read more here.
Keywords: absorption; solar collectors; absorption solar; direct absorption ... See more keywords
Experimental investigation on the thermal behavior of nanofluid direct absorption in a trough collector
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Cleaner Production"
DOI: 10.1016/j.jclepro.2017.04.131
Abstract: Abstract In the present work, a solar direct absorption parabolic trough collector is prepared for studying the efficiency enhancement methods. The trough collector was manufactured with a width of 0.7 m and the height of 2 m… read more here.
Keywords: trough collector; direct absorption; experimental investigation; collector ... See more keywords
A hybrid approach of surface and direct absorption of solar radiation on parabolic solar collector.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Cleaner Production"
DOI: 10.1016/j.jclepro.2021.129111
Abstract: Abstract This paper presents a novel approach of utilizing a spectrally selective coating inside the absorber tube of a solar parabolic collector for enhanced photothermal conversion. The photothermal performance of a hybrid system that incorporates… read more here.
Keywords: direct absorption; coating; internal coating; solar collector ... See more keywords
Modelling of a direct absorption solar receiver using carbon based nanofluids under concentrated solar radiation
Sign Up to like & getrecommendations! Published in 2018 at "Renewable Energy"
DOI: 10.1016/j.renene.2017.06.029
Abstract: Abstract The addition of nanoparticles in a base fluid can enhance its optical properties, in particular its absorption properties. Thus, nanofluids can be successfully used in solar collectors to absorb the solar radiation in their… read more here.
Keywords: absorption; absorption solar; direct absorption; solar radiation ... See more keywords
Economic analysis and experimental investigation of a direct absorption solar humidification-dehumidification system for decentralized water production
Sign Up to like & getrecommendations! Published in 2021 at "Sustainable Energy Technologies and Assessments"
DOI: 10.1016/j.seta.2021.101306
Abstract: Abstract In the present work, a direct absorption solar humidifier (SH) based closed-air loop open-water loop humidification-dehumidification (HDH) desalination system is investigated experimentally. The selection of air-to-water mass flow ratios for this configuration is unknown.… read more here.
Keywords: system; water; humidification dehumidification; direct absorption ... See more keywords
Plasmonic nanofluids for high photothermal conversion efficiency in direct absorption solar collectors: Fundamentals and applications
Sign Up to like & getrecommendations! Published in 2019 at "Solar Energy Materials and Solar Cells"
DOI: 10.1016/j.solmat.2019.110084
Abstract: Abstract With growing interest in the use of solar thermal applications to produce renewable and sustainable energy, coupled with the remarkable progress being made in nanotechnology, many innovative solutions have been proposed to improve the… read more here.
Keywords: conversion efficiency; plasmonic nanofluids; direct absorption; solar collectors ... See more keywords
Radiation stability and photothermal performance of surface-functionalized plasmonic nanofluids for direct-absorption solar applications
Sign Up to like & getrecommendations! Published in 2021 at "Solar Energy Materials and Solar Cells"
DOI: 10.1016/j.solmat.2021.111115
Abstract: Abstract In this work, the photostability of gold nanoparticles (AuNPs) with different functional molecular coatings was investigated. Gold/water nanofluids were prepared using citrate (CIT) reduction, then coated with polyethylene glycol (PEG), polyvinylpyrrolidone (PVP), or bovine… read more here.
Keywords: surface; radiation; stability; direct absorption ... See more keywords
Precise measurements of 12CH2D2 by tunable infrared laser direct absorption spectroscopy.
Sign Up to like & getrecommendations! Published in 2019 at "Analytical chemistry"
DOI: 10.1021/acs.analchem.9b03412
Abstract: We present precise measurements of doubly-deuterated methane (12CH2D2) in natural methane samples using tunable infrared laser direct absorption spectroscopy (TILDAS). Using a 413 m optical path length astigmatic Herriott cell and two quantum cascade lasers… read more here.
Keywords: infrared laser; tunable infrared; direct absorption; precise measurements ... See more keywords
Demonstrating an absolute quantum advantage in direct absorption measurement
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-06545-w
Abstract: Engineering apparatus that harness quantum theory promises to offer practical advantages over current technology. A fundamentally more powerful prospect is that such quantum technologies could out-perform any future iteration of their classical counterparts, no matter… read more here.
Keywords: absorption; quantum; direct absorption; advantage ... See more keywords
Performance Evaluation of a Direct Absorption Collector for Solar Thermal Energy Conversion
Sign Up to like & getrecommendations! Published in 2020 at "Energies"
DOI: 10.3390/en13184956
Abstract: The solar absorption efficiency of water as a base-fluid can be significantly improved by suspending nanoparticles of various materials in it. This experimental work presents the photo thermal performance of water-based nano-fluids of graphene oxide… read more here.
Keywords: energy conversion; performance; thermal energy; direct absorption ... See more keywords