Steam generation in a nanoparticle-based solar receiver
By Haichuan Jin, Gui-ping Lin, L. Bai, A. Zeiny, Dongsheng Wen. 2016
267 citations recorded by the source corpus.
Abstract Steam production is essential for a wide range of applications, and currently there is still strong debate if steam could be generated on top of heated nanoparticles in a solar receiver. We performed steam generation experiments for different concentrations of gold nanoparticles dispersions in a cylindrical receiver under focused natural sunlight of 220 Suns. Combined with mathematical modelling, it is found that the initial stage of steam generation is mainly caused by localized boiling and vaporization in the superheated region due to highly non-uniform temperature and radiation energy distribution, albeit the bulk fluid is still subcooled. Such a phenomenon can be well explained by the classical heat transfer theory, and the hypothesized ‘nanobubble’, i.e., steam produced around the heated nanoparticles, is unlikely to occur under normal solar concentrations. For future solar receiver design, attention should be paid to focus and trap more solar energy at the superheated region while minimizing the temperature rise of the bulk fluid.
Subfields: Biomedical Engineering, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/8b5ffbcc87e00941936be56387ea06998c8c0f60
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In Biomedical Engineering
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In Renewable Energy, Sustainability and the Environment
Citations in the corpus
- Solar-thermal conversion and steam generation: a review (2020, background): “Typically, a single solar absorption material follows one of the photo-thermal mechanisms [45].”
- New hydrogel materials for improving solar water evaporation, desalination and wastewater treatment: A review (2020, background): “Some additives such as graphene oxide, gold, and silver nanoparticles or black Titania have been added to hydrogelforming effective composites in water purification systems [70,71].”
- Nanofluids effects on the evaporation rate in a solar still equipped with a heat exchanger (2017, background): “Despite some limitations such as relatively high preparation cost and stability issues, extensive attempts have been made to develop the applications of nanofluids in energy systems such as solar energy based devices [7-13], cooling and thermal management of electronic equipment [14,15], grinding an”