Energies | Free Full-Text | Recent Developments in …
Solar energy is the most promising green energy resource, as there is an enormous supply of solar power. It is considered a good potential solution for energy crises in both domestic and industrial …
Performance of direct absorption solar collector with nanofluid …
A direct absorption solar collector absorbing the solar radiation through a water/aluminum nanofluid. The nanofluids motion is only due to the angle of inclination θ . The nanoparticles are allowed to be uniformly distributed within the fluid having a constant particle volume fraction φ, in the interval [0, 0.006] for the current analysis.
Nanofluid-based direct absorption solar collector | Journal of ...
Here we report on the experimental results on solar collectors based on nanofluids made from a variety of nanoparticles (carbon nanotubes, graphite, and silver). …
Thermo-optical performance of bare laser-synthesized TiN nanofluids for direct absorption solar collector …
Direct absorption solar collectors (DASC) employing liquid absorbing media present one of the simplest geometries for solar energy exploitation [6]. Since most widely-available DASC working fluids (water, ethylene glycol, and oil) have relatively weak absorption, ...
Eulerian CFD model of direct absorption solar collector with …
Direct absorption solar collectors (DASC) have been proved to be effective for a variety of applications. In this article, a numerical study of a nanofluid direct absorption solar collector was performed using computational fluid dynamics (CFD).
Broadband absorbing mono, blended and hybrid nanofluids for direct absorption solar collector…
Broadband absorbing mono, blended and hybrid nanofluids for direct absorption solar collector: a comprehensive review, Sreehari Sreekumar, Nihilkumar Shah, Jayanta Deb Mondol, Neil Hewitt, Supriya Chakrabarti Increasing population density and rising energy ...
Recent progress on concentrating direct absorption solar collector ...
One of the methods to harvest the solar energy is through the solar thermal collector, which utilizes heat transfer fluid to capture the solar radiation. In this paper, a …
Solar absorption characteristics of SiO2@Au core-shell composite nanorods for the direct absorption solar collector …
In order to overcome the limitations of traditional solar collectors, direct absorption solar collectors (DASC) [[10], [11], [12]] have been proposed to improve the solar absorption efficiency. DASC has the advantages of simple manufacturing, uniform working fluid temperature distribution, low cost, and low heat loss.
Numerical investigation on radiative heat loss of a direct absorption solar collector …
Direct-absorption solar collectors have the potential to be highly efficient and exhibit a uniform temperature distribution. However, the standard numerical model simplifies radiation and heat loss, which require further consideration at high temperatures. Thus, a novel ...
Direct absorption solar collector: Use of nanofluids and …
However, the focus in those papers was on stationary fluids and their optical properties, and not on their use in direct absorption solar collectors. Therefore, we address this issue in the present paper. Finally, biodegradable colloids …
Optimization of a direct absorption solar collector with blended plasmonic nanofluids …
Theoretical model of the direct absorption solar collector A two-dimensional (2-D) simulation model of a DASC with plasmonic nanofluids is built with COMSOL Multiphysics. The schematic of the computational domain is illustrated in Fig. 1. Solar radiation is ...
Direct absorption solar collector: Use of nanofluids and …
In this study, three types of fluids were experimentally and numerically tested in a direct absorption solar collector (DASC) experimental set-up: water, …
Absorption characteristics and solar thermal conversion of Fe3O4@Au core/shell nanoparticles for a direct-absorption solar collector …
The most direct and simple solar thermal system is the direct absorption solar collector (DASC) [7], which was firstly developed by Minardi and Chuang [8]. The DASC employs base fluids, such as water and ethanol, as the working medium, these fluids flow in transparent tubing for directly harvesting solar energy and converting it to thermal …
Comparative assessment of direct absorption solar collector …
Scientific Reports - Comparative assessment of direct absorption solar collector performance in different climates Skip to main content Thank you for visiting nature .
Efficient direct absorption solar collector based on hollow TiN …
In this work, we propose a direct absorption solar collector (DASC) based on hollow TiN NPs for efficient solar harvesting. The optical properties of the hollow NPs are investigated using the finite element method. Numerical results show …
A combined numerical and experimental study on graphene/ionic liquid nanofluid based direct absorption solar collector …
Since their discovery in the early 1970s, direct absorption solar collectors (DACs) [1], where heat transfer fluid (HTF) directly and volumetrically absorb solar incident radiation, have been demonstrated to be efficient than …
Performance investigation of the direct absorption solar collector based …
In order to improve the energy efficiency of solar collector, a new type of solar collector-direct absorption solar collector (DASC) is proposed [4], [5], [6].The schematic illustration of the DASC is shown in Fig. 1 (b) can be seen that there is no coating layer on the ...
Energy, exergy and corrosion analysis of direct absorption solar collector …
The direct absorption or volumetric absorption solar collectors use optical nanofluids having high solar radiation absorbance, which also act as the working fluid to transfer the heat to the thermal systems (for …
Nanofluids for Direct-Absorption Solar Collectors—DASCs: A …
The idea of direct-absorption solar collectors (DASCs), Figure 1 C, was put forth to completely remove the solid absorber and directly expose the working fluid to solar radiation for it to be absorbed and converted into heat in a volumetric STC process, overcoming,, ...
Numerical investigation of direct absorption solar collectors (DASC), based on carbon-nanohorn nanofluids, for low temperature applications
The Direct-Absorption Solar Collectors (DASCs) were firstly investigated by Minardi and Chuang (1975), who carried out experimental tests on a highly-absorbing "black" fluid (water and 3.0 g/l of India ink) flowing in a transparent irradiated tube.
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