PARABOLOSILINDRIK KONSENTRATORLARDA KARBON QORA ASOSLI NANOSUYUQLIKLARDAN FOYDALANISH ORQALI ISSIQLIK SAMARADORLIGINI OSHIRISH IMKONIYATLARINI BAHOLASH

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20 август 2025

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PARABOLOSILINDRIK KONSENTRATORLARDA KARBON QORA ASOSLI NANOSUYUQLIKLARDAN FOYDALANISH ORQALI ISSIQLIK SAMARADORLIGINI OSHIRISH IMKONIYATLARINI BAHOLASH

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MAQOLA ANNOTATSIYASI

Annotatsiya. Ushbu tadqiqotda karbon asosidagi nanosuyuqliklarning parabolosilindrik konsentratorli (PTC) quyosh qurilmalarining issiqlik samaradorligiga ta’siri o‘rganilgan. Barqaror nanosuyuqliklar ikki bosqichli ultratovush usuli yordamida oksidlangan karbon qorasi nanozarrachalarini distillangan suvda dispergatsiya qilish orqali tayyorlandi. PTC tizimining issiqlik balansi tenglamalarini va nanosuyuqliklarning haroratga bog‘liq issiqlik fizikaviy xususiyatlarini hisobga olgan holda keng qamrovli matematik modeli ishlab chiqildi. Model chekli ayirmalar usulida yechildi va eksperimental natijalar bilan tekshirildi hamda yuqori aniqlik ko‘rsatdi (RMSE = 0,79 K, R² = 0,99992). Simulyatsiyalar Toshkent shahrining yillik meteorologik ma’lumotlari asosida o‘tkazilib, nanosuyuqliklarning issiqlik samaradorligi va konvektiv issiqlik almashinuviga ta’siri baholandi. Natijalar ko‘rsatishicha, karbon asosidagi nanosuyuqliklar suv bilan solishtirganda yillik issiqlik yig‘ilishini o‘rtacha 0.006% ga oshirdi va maksimal issiqlik yig‘ilishi iyul oyida qayd etildi. Bundan tashqari, nanosuyuqlik yil davomida yuqoriroq issiqlik uzatish koeffitsiyentlarini (370 dan 400 Vt/m²·K gacha) saqlab qoldi, bu esa o‘zgaruvchan iqlim sharoitlarida konvektiv issiqlik uzatish samaradorligining yaxshilanganligini ko‘rsatadi. Ushbu natijalar karbon qorasi asosidagi nanosuyuqliklar quyosh issiqlik tizimlarining issiqlik samaradorligi va yil bo‘yi barqaror ishlashini oshirish uchun yuqori potensialga ega ekanligini tasdiqlaydi. Usul va materiallar. Parabolosilindrik konsentratorlarda issiqlik uzatish samaradorligini oshirish uchun turli xil issiqlik tashuvchi suyuqliklardan foydalaniladi. Ularning ichida nanosuyuqliklar alohida o‘rin tutadi. Ushbu tadqiqotda uglerod qorasi (Carbon black) nanozarrachalari ikki bosqichli ultratovushli dispergirlash usuli orqali distillangan suvda tarqatilib, barqaror nanosuyuqliklar tayyorlandi. Nanosuyuqliklarning issiqlik fizikaviy xususiyatlari haroratga bog‘liq holda aniqlanib, hisob-kitoblar uchun qo‘llanildi. Parabolosilindrik konsentratorning matematik modeli ishlab chiqilib, uning yechimi implitsit chegarali farqlar usuli orqali amalga oshirildi va eksperimental ma’lumotlar bilan tasdiqlandi. Natijalar. Toshkent shahrining bir yillik meteorologik ma’lumotlari asosida nanosuyuqliklarning issiqlik uzatish samaradorligiga ta’siri tahlil qilindi. Tadqiqot natijalariga ko‘ra, uglerod qorasi asosli nanosuyuqliklar oddiy suvga nisbatan yillik issiqlik yig‘ish samaradorligini o‘rtacha 0.006% ga oshirgani aniqlandi. Eng yuqori samaradorlik iyul oyida kuzatildi. Shuningdek, nanosuyuqlik butun yil mobaynida yuqori issiqlik uzatish koeffitsiyentini (370–400 Vt/m²·K) ta’minladi, bu esa turli iqlim sharoitlarida tizimning yuqori samaradorligini ko‘rsatdi. Olingan natijalar uglerod qorasi asosli nanosuyuqliklarning quyosh issiqlik tizimlarining yil davomidagi barqarorligi va samaradorligini yaxshilashda yuqori potensialga ega ekanligini tasdiqladi.

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Teglar

# моделирование# modellashtirish# modelling# технический углерод# carbon black# nanofluids# “Two-step” method# PTC# Heat gain# наножидкости# двухступенчатый метод# ПЦК# теплопроизводительность# Karbon qorasi# nanosuyuqliklar# ikki bosqichli usul# issiqlik yig‘ilishi

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Foydalanilgan adabiyotlar

[24] Smith J.M., “Introduction to chemical engineering thermodynamics,” J. Chem. Educ., 1950, doi: 10.1021/ed027p584.3.

[25] Holman J., Heat Transfer sixth edition. 1998.

[1] Borode A., Tshephe T., and Olubambi P. 2024. A Critical Review of the Thermophysical Properties and Applications of Carbon-Based Hybrid Nanofluids in Solar Thermal Systems. Frontiers in Energy Research.

[2] Zuo X., Yang W., Zhang Z., An Y. 2022. Experimental Investigation on Photothermal Conversion Properties of Collagen Solution-Based Carbon Black Nanofluid. Case Studies in Thermal Engineering.

[3] Kumar D., and Kumari S. 2019. Performance Investigation of a Nanofluid-Based Parabolic Trough Solar Collector. Lecture Notes in Mechanical Engineering.

[4] Gautam P. M., and Chudasama M.K. 2022. “An Experimental Investigation of Parabolic Trough Collector Using Industrial-Grade Multiwall Carbon Nanotube-H2O Based Nanofluid.” International Journal of Engineering, Transactions A: Basics.

[5] Mwesigye A., and Huan Z.. 2015. Thermal and Thermodynamic Performance of a Parabolic Trough Receiver with Syltherm800-Al₂O₃ Nanofluid as the Heat Transfer Fluid. Energy Procedia.

[6] Dou L., Ding B., Zhang Q., and Mu M. 2023. Numerical Investigation on the Thermal Performance of Parabolic Trough Solar Collector with Synthetic Oil/Cu Nanofluids. Applied Thermal Engineering.

[7] Basbous N., Taqi M. and Janan M.A. 2016. Thermal Performances Analysis of a Parabolic Trough Solar Collector Using Different Nanofluids. Proceedings of the International Renewable and Sustainable Energy Conference (IRSEC).

[8] Borode A., Ahmed N. and Olubambi P. 2019. “A Review of Solar Collectors Using Carbon-Based Nanofluids.” Journal of Cleaner Production.

[9] Jalilov D., T. Juraev, Ibodullaev A. and Halimov A. 2024. Temperature Distribution in the Receiver Tube of a Parabolic Trough Collector with Nanofluid. Applied Solar Energy (Geliotekhnika).

[10] Benrezkallah A., Y. Marif M. E. Soudani and A. Aouachir. 2024. Thermal Performance Evaluation of the Parabolic Trough Solar Collector Using Nanofluids: A Case Study in the Desert of Algeria. Case Studies in Thermal Engineering.

[11] Jalilov D., Juraev, T., and Akhatov, J. (2024). "Investigation of the Sedimentation Process in MWCNT-Based Nanofluids with an Influence of Surfactant." Applied Solar Energy, 60(2), 281–286.

[12] Akhatov J.S., and Juraev, T.I. (2022). Investigation of thermo-physical properties of nanofluids based on nanoparticles of various materials for solar thermal applications. UNEC Journal of Engineering and Applied Sciences, 2(2), 5–17.

[13] Gulamova D.D. et al. (2021). Solar Technology Capabilities and Prospects in Ceramic Material Production. Refractories and Industrial Ceramics Vol. 63, No. 4, 378-382. https://doi.org/10.1007/s11148-023-00739-8

14] Gulamova D.D. et al. (2022). "Nanostructured Low-Resistance Ceramics Based on the Bi–Pb–Sr–Ca–Cu–O System Produced by Solar Technology." Refractories and Industrial Ceramics Vol. 63, No. 1, 60-65. https://doi.org/10.1007/s11148-022-00681-1

[15] Gulamova D.D. et al. (2021). "Fundamentals and Methodology of the Development of Oxide Material Synthesis Technologies at the Large Solar Furnace (Parkent)." Applied Solar Energy. Applied Solar Energy, 2021, Vol. 57, No. 6, pp. 559–564. https://doi.org/10.3103/S0003701X21060086

[16] Barreneche C. et al., “Influence of nanoparticle morphology and its dispersion ability regarding thermal properties of water used as phase change material,” Appl. Therm. Eng.,2018;128:121–126.

[17] Dudley V. E., “Segs_Ls2_Solar_Collector.Pdf.” pp. 1–140, 1994.

[18] García-Valladares O. and Velázquez N. “Numerical simulation of parabolic trough solar collector: Improvement using counter flow concentric circular heat exchangers,” Int. J. Heat Mass Transf., 2009, doi: 10.1016/j.ijheatmasstransfer.2008.08.004.

[19] Padilla R.V., Demirkaya G., Goswami D.Y., Stefanakos E., and Rahman M.M., “Heat transfer analysis of parabolic trough solar receiver,” Appl. Energy, 2011, doi: 10.1016/j.apenergy.2011.07.012.

[20] James Clerk M. A treatise on electricity and magnetism. 2010. doi: 10.1017/CBO9780511709333.

[21] Batchelor G.K., “The effect of Brownian motion on the bulk stress in a suspension of spherical particles,” J. Fluid Mech., 1977, doi: 10.1017/S0022112077001062.

[22] Pak B.C. and Cho Y.I., “Hydrodynamic and heat transfer study of dispersed fluids with submicron metallic oxide particles,” Exp. Heat Transf., 1998, doi: 10.1080/08916159808946559.

[23] Xuan Y. and Roetzel W., “Conceptions for heat transfer correlation of nanofluids,” Int. J. Heat Mass Transf., 2000, doi: 10.1016/S0017-9310(99)00369-5.

[26] Андерсон Д., Таннехилл Д., and Плетчер Р., “Вычислительная гидромеханика и теплообмен,” in В 2-х т. Т. 2, 1990.

[27] Versteeg H.K., Malalasekera W., Orsi G., Ferziger J.H., Date A.W., and Anderson J.D., An Introduction to Computational Fluid Dynamics - The Finite Volume Method. 1995.

[28] Naik P. and Oza K., Python with Spyder, no. November. 2019.

[29] American A.N. “Draft American National Standard,” J. SMPTE, vol. 83, no. 3, pp. 216–219, 2012, doi: 10.5594/j08812.