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Transport Properties and Freeze-Thaw Characteristics of Nanofluids. Measurements of Properties and Computational Modeling of Freeze-Thaw
В наличии
Местонахождение: Алматы | Состояние экземпляра: новый |
Бумажная
версия
версия
Автор: Bhaskar Sahoo and DEBENDRA DAS
ISBN: 9786202682749
Год издания: 2020
Формат книги: 60×90/16 (145×215 мм)
Количество страниц: 92
Издательство: LAP LAMBERT Academic Publishing
Цена: 31605 тг
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Аннотация: This book presents the rheological and thermal properties and the freeze-thaw characteristics of nanofluids. Nanofluids are dispersions of nano-scale particles (< 100 nm) in a base fluid such as water and glycols. In cold regions, a mixture of 60% ethylene glycol and water by mass (60:40 EG/W) is normally used as the heat transfer fluid due to its low freezing point. Rheological properties of aluminum oxide nanofluid in the EG/W base fluid were investigated and new correlations for viscosity as a function of temperature and particle concentration were developed. From the specific heat experiments on zinc oxide nanofluid a new equation was developed. The thermal conductivity of silicon dioxide nanofluid was measured. A new correlation for thermal conductivity as a function of particle concentration, size, base fluid and particle properties and temperature was proposed, considering the Brownian motion of nanoparticles. Freeze-thaw characteristics of copper oxide nanoparticle dispersions in water were studied experimentally and computationally for a freeze-thaw cycle. The freezing rate, agglomeration of nanoparticles and the effect on the freezing point of nanofluid were summarized.
Ключевые слова: nanofluids, freeze, thaw, viscosity, thermal conductivity, specific heat, ethylne glycol