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Farzaneh, Hamed, Behzadmehr, Amin, Samimi, Abdolreza. (1400). Stability of Nanofluid-Surfactants as Volumetric Receivers in Parabolic Trough Solar Collectors; a Molecular Dynamic Approach. نشریه علمی دانشگاه سیستان و بلوچستان, 9(2), 109-116. doi: 10.22111/cnmst.2022.39120.1215
Hamed Farzaneh; Amin Behzadmehr; Abdolreza Samimi. "Stability of Nanofluid-Surfactants as Volumetric Receivers in Parabolic Trough Solar Collectors; a Molecular Dynamic Approach". نشریه علمی دانشگاه سیستان و بلوچستان, 9, 2, 1400, 109-116. doi: 10.22111/cnmst.2022.39120.1215
Farzaneh, Hamed, Behzadmehr, Amin, Samimi, Abdolreza. (1400). 'Stability of Nanofluid-Surfactants as Volumetric Receivers in Parabolic Trough Solar Collectors; a Molecular Dynamic Approach', نشریه علمی دانشگاه سیستان و بلوچستان, 9(2), pp. 109-116. doi: 10.22111/cnmst.2022.39120.1215
Farzaneh, Hamed, Behzadmehr, Amin, Samimi, Abdolreza. Stability of Nanofluid-Surfactants as Volumetric Receivers in Parabolic Trough Solar Collectors; a Molecular Dynamic Approach. نشریه علمی دانشگاه سیستان و بلوچستان, 1400; 9(2): 109-116. doi: 10.22111/cnmst.2022.39120.1215

Stability of Nanofluid-Surfactants as Volumetric Receivers in Parabolic Trough Solar Collectors; a Molecular Dynamic Approach

Challenges in Nano and Micro Scale Science and Technology
دوره 9، شماره 2، بهمن 2021، صفحه 109-116  XML اصل مقاله (782.44 K)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.22111/cnmst.2022.39120.1215
نویسندگان
Hamed Farzaneh email orcid 1؛ Amin Behzadmehr2؛ Abdolreza Samimiorcid 3
1Department of mechanical Engineering, University of Sistan and Baluchestan
2Department of Mechanical Engineering, University of Sistan and Baluchestan
3Department of Chemical Engineering, University of Sistan and Baluchestan
چکیده
Recently, using volumetric receivers as a novel idea to collect solar energy was considered. Solar radiation volumetrically absorbers with a heat transfer fluid which flows through a transparent tube. Nanofluids as working fluids were proposed by different researchers because of their interesting absorption coefficient as well as an important heat transfer coefficient. However, conditions such as the severe temperature gradient in absorber tubes and high temperature of working heat transfer fluid, deteriorate stability of the nanofluids.
Considering the kinetic energy of nanoparticles, DLVO potential energy and steric repulsion between nanoparticles, a molecular approach is adopted to investigate the nanofluid stability for different nanofluids with polymeric surfactants and different operational conditions. Two types of polymeric surfactants were considered and stability diagrams introduced to show the conditions for which a nanofluid would be stable.
In the case of using PAA for a given temperature gradient, increasing the working fluid temperature required smaller nanoparticle diameters to result in a stable nanofluid (nanoparticles up to 13.2 nm diameter) and for PMAA, a stable nanofluid can be achieved with larger nanoparticle diameters (about 80nm) while increasing the working fluid temperature.
کلیدواژه‌ها
nanofluid؛ dispersion stability؛ volumetric receiver؛ DLVO؛ polymeric surfactant
آمار
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