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Анотація
В статье приведено описание экспериментальной установки, методика проведения эксперимента и обработки данных полученных на адиабатном калориметре, который реализует метод непосредственного нагрева. В работе приведены экспериментальные данные о теплоемкости на линии кипения для чистого спирта и нанофлюидов изопропиловый спирт / наночастицы Al2O3 на трех концентрациях. Полученные данные указывают, что примеси наночастиц Al2O3 способствуют уменьшению теплоемкости изопропилового спирта в жидкой фазе.
В работе предложена новая «трехфазная» модель прогнозирования теплоемкости нанофлюидов, в которой фигурирует избыточная мольная теплоемкость. Выполненный анализ показывает, что величина избыточной теплоемкости нанофлюидов может быть связана с увеличением гидродинамического радиуса наночастиц при изменении температуры и концентрации наночастиц в изопропиловом спирте.
Ключові слова:
Теплоемкость – Нанофлюиды – Наночастицы Al2O3 – Изопропиловый спирт – Экспери-мент – Модель прогнозирования
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Як цитувати
Лозовский, Т., Шимчук, Н., Мотовой, И., & Железный, В. (2016). ВЛИЯНИЕ ПРИМЕСЕЙ НАНОЧАСТИЦ Al2O3 НА ТЕПЛОЕМКОСТЬ ИЗОПРОПИЛОВО-ГО СПИРТА. Refrigeration Engineering and Technology, 52(1). https://doi.org/10.21691/ret.v52i1.47
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ХОЛОДИЛЬНІ ТА СУПУТНІ ТЕХНОЛОГІЇ
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1. Chen, M.G., et al., 2014. Experimental investigation on pool boiling of R600a/mineral oil solution. Proceed-ings of 11th IIR Gustav Lorentzen Conference on Natu-ral Refrigerants, Hangzhou, China, pp 86
2. Zhelezny, V.P., 2014. Аn application of nanotech-nologies in refrigeration -perspectives and challenges. Proceedings of 11th IIR Gustav Lorentzen Conference on Natural Refrigerants, ID112
3. Chen, G.M., Zhelezny, V.P., Melnyk, A.V., Shesto-palov, K.O., 2015. An experimental investigation and modelling of flow boiling heat transfer of isobutane-compressor oil solution in a horizontal smooth tube. Int. J. Ref., Vol. 58, pp. 137-145
4. Lukyanov, N.N., Hlieva, O.Ya., Zhelezny, V.P., Se-menyuk, Yu.V., 2015. Research prospects of using nano refrigerants in order to improve ecological and energy efficiency of equipment. East European Journal of ad-vanced technologies, Vol.3/5(75), pp. 32-40
5. Namburu, P.K., Kulkarni, D.P., Dandekar, A., Das, D.K., 2007. Experimental investigation of viscosity and specific heat of silicon dioxide nanofluids. Micro &Nano Lett.,Vol. 2(3), pp. 67-71,
doi: 10.1049/mnl:20070037
6. Zhou, S., Ni, R., 2008. Measurement of the specific heat capacity of water-based Al2O3 nanofluid. Appl. Phys. Lett., Vol. 92 (9), pp. 093123, doi: 10.1063/1.2890431
7. Vajjha, R.S., Das, D.K., 2009. Specific heat meas-urement of three nanofluids and development of new correlations. ASME J. Heat Transfer, Vol. 131 (7), pp. 131, pp. 071601, doi: 10.1115/1.3090813
8. Yiamsawasd, T., Dalkilic, A.S., Wongwises, S., 2012. Measurement of specific heat of nanofluids. Current Nanoscience, Vol. 8 (6), pp. 939-944, doi: 10.2174/157341312803989132
9. Nelson, I.C., Banerjee, D., Rengasamy, P., 2009. Flow loop experiments using polyalphaolefinnanofluids. J. Thermophys. Heat Transfer, Vol. 23 (4), pp. 752-761, doi: 10.2514/1.31033
10. Zhou, L.P., Wang, B.X., Peng, X.F., Du X.Z., Yang Y.P., 2010. Research article on the specific heat capaci-ty of CuOnanofluid. Adv. Mech. Eng.,Vol. 2, pp. 172085,doi: 10.1155/2010/172085
11. Shin, D., Banerjee, D., 2011. Enhanced specific heat of silica nanofluid. ASME J. Heat Transfer, Vol. 133, pp. 024501, doi: 10.1115/1.4002600
12. Pak, B.C., Cho, Y.I., 1998. Hydrodynamic and heat transfer study of dispersed fluids with submicron metal-lic oxide particles. Exp. Heat Transfer, Vol. 11, pp. 151-170, doi: 10.1080/08916159808946559
13. Xuan, Y., Roezel, W., 2000. Conceptions for Heat Transfer Correlations of Nanofluids. Int. J. Heat mass transfer,Vol. 43, pp. 3701-3707, doi: 10.1016/s0017-9310(99)00369-5
14. Zhang, L.Li, Ma, Y., H., Yang, M., 2010. Molecular dynamics simulation of effect of liquid layering around the nanoparticle on the enhanced thermal conductivity of nanofluids. J. Nanoparticle,Vol. 12, pp. 811–821, doi: 10.1007/s11051-009-9728-5
15. Oh, S.H., Kauffmann, Y., Scheu, C., Kap-lan, W.D., Ruhle, M., 2005. Ordered liquid aluminum at the inter-face with sapphire. Science,Vol. 310, pp. 661–663, doi: 10.1126/science.1118611
16. Efstathios E. Michaelides, 2014. Nanofluidics thermodynamic and transport properties. Springer, New York, pp. 335
17. Zheleznyiy, V.P., Semenyuk, Yu.V., Gotsul-skiy, V.Ya, Nikulin, A.G., Shimchuk, N.A., Luky-anov, N.N., 2014. Methodical features of studying of the processes of boiling in the free volume of nanofluid iso-propanol / Al2O3. East European Journal of advanced technologies, Vol. 2/5 (68), pp. 39-45, doi: 10.15587/1729-4061.2014.23553