پیوندهای مفید
آمار
| تعداد نشریات | 9 |
| تعداد شمارهها | 452 |
| تعداد مقالات | 5,748 |
| تعداد مشاهده مقاله | 8,233,618 |
| تعداد دریافت فایل اصل مقاله | 6,751,315 |
مطالعه تجربی انتقال حرارت جریان نانوسیال آب-اکسید آلومینیوم در لولههای مارپیچ میکروفیندار | ||
| نشریه مهندسی مکانیک امیرکبیر | ||
| مقاله 15، دوره 52، شماره 2، اردیبهشت 1399، صفحه 509-524 اصل مقاله (1.85 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22060/mej.2018.13989.5773 | ||
| نویسندگان | ||
| مجید دستمالچی* 1؛ قنبرعلی شیخ زاده2؛ علی عارف منش3 | ||
| 1کاشان-بلوار قطب راوندی-دانشگاه کاشان | ||
| 2دانشگاه کاشان | ||
| 3کاشان*مهندسی مکانیک | ||
| چکیده | ||
| بهبود انتقال حرارت در مبدلهای حرارتی از اهمیت ویژهای برخوردار است. در مقاله حاضر، روشهای غیرفعال بهبود انتقال حرارت با استفاده از لولههای مارپیچ میکروفیندار و نانوسیال به صورت تجربی مطالعه شده است. در این کار تجربی جریان سیال و انتقال حرارت نانوسیال آب-اکسید آلومینیوم برای کسر حجمیهای 0 ،0/5 و 1 در لوله میکروفیندار مارپیچ شده با دو قطر متفاوت کویل مارپیچ و دو زاویه مارپیچ میکروفین 18 و 25 درجه در یک مبدل حرارتی پوسته و لوله مارپیچ برای عدد دین در محدوده 500 تا 4000 مطالعه شده است. ضریب انتقال حرارت سمت لوله مارپیچ با استفاده از روش ویلسون پلات اندازهگیری شده است. روابط تجربی نیز بر اساس نتایج بدست آمده بر حسب عدد دین، زاویه مارپیچ فین، ارتفاع فین و کسر حجمی نانوسیال ارائه شدهاند. بر اساس نتایج تجربی با میکروفیندار کردن لوله مارپیچ و افزایش زاویه میکروفین و استفاده از نانوسیال انتقال حرارت و افت فشار افزایش مییابد. | ||
| کلیدواژهها | ||
| مطالعه تجربی؛ لوله میکروفین دار داخلی؛ لوله کویل شده؛ روش ویلسون پلات؛ انتقال حرارت؛ افت فشار | ||
| عنوان مقاله [English] | ||
| Experimental Study of Fluid Flow and Heat Transfer of Al2 O3 -Water Nanofluid in Helically Coiled Micro-Finned Tubes | ||
| نویسندگان [English] | ||
| majid dastmalchi1؛ Ghanbar Ali Sheikhzadeh2؛ Ali Arefmanesh3 | ||
| 1department of heat and fluid faculty of Mechanical Engineering, University of Kashan, Kashan, Iran | ||
| 2Department of Heat and Fluid, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran | ||
| 3Department of Heat and Fluid, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran | ||
| چکیده [English] | ||
| In this study, inactive methods of enhancing heat transfer in the shell and tube heat exchangers, such as using smooth and micro-fins helically coiled tubes, and employing nanofluids as the working fluid, are investigated experimentally. A number of experiments are carried out for the flow of the Al2 O3 -water nanofluid in a shell and tube heat exchangers with helically coiled smooth as well as micro-finned tubes, and the pressure drop and the heat transfer coefficient are measured. The experiments are conducted for the Dean number ranging from 500 to 4000, for the fin helix angle between 18 and 25º, and for the nanofluid volume fractions of 0, 0.5 and 1%. The average heat transfer coefficients of the tube side of heat exchangers in each case is calculated using the Wilson plot method. Empirical correlations are proposed for the heat transfer coefficient of the nanofluid following through the tube-side of the heat exchanger in terms of the Dean number, the fin helix angle, the fin height and the volume fraction of the nanofluid. Based on the experimental results, using micro-finned coiled tubes together with increasing the micro-fin helix angle and employing nanofluid enhance the heat transfer while increasing the pressure drop through the heat exchanger. | ||
| کلیدواژهها [English] | ||
| Micro-finned tube, Nanofluid, Helically coiled tube, Wilson plot method, Heat transfer | ||
| مراجع | ||
|
[1] D.H. Han, K.J. Lee, Single-phase heat transfer and flow characteristics of micro-fin tubes, Applied Thermal Engineering, 25(11-12) (2005) 1657-1669. [2] P. Naphon, P. Sriromruln, Single-phase heat transfer and pressure drop in the micro-fin tubes with coiled wire insert, International Communications in Heat and Mass Transfer, 33(2) (2006) 176-183. [3] X.W. Li, J.A. Meng, Z.X. Li, Experimental study of single-phase pressure drop and heat transfer in a micro-fin tube, Experimental Thermal and Fluid Science, 32(2) (2007) 641-648. [4] G.J. Zdaniuk, L.M. Chamra, P.J. Mago, Experimental determination of heat transfer and friction in helically- finned tubes, Experimental Thermal and Fluid Science, 32(3) (2008) 761-775. [5] M. Siddique, M. Alhazmy, Experimental study of turbulent single-phase flow and heat transfer inside a micro-finned tube, International Journal of Refrigeration, 31(2) (2008) 234-241. [6] S.F. AI-Fahed, Z.H. Ayub, A.M. AI-Marafie, B.M. Soliman, Heat Transfer and Pressure Drop in a Tube with Internal Microfins under Turbulent Water Flow Conditions, Experimental Thermal and Fluid Science, (1993). [7] J.B. Copetti, M.H. Macagnan, D. de Souza, R.D.C. Oliveski, Experiments with micro-fin tube in single phase, International Journal of Refrigeration, 27(8) (2004) 876-883. [8] V. Gnielinski, New equations for heat and mass transfer in the turbulent flow in pipes and channels, NASA STI/recon technical report A, 75 (1975) 8-16. [9] G.J. Zdaniuk, L. Rogelio, L.M. Chamra, Linear Correlation of Heat Transfer and Friction in Helically-Finned Tubes Using Five Simple Groups of Parameters, Int. J. Heat Mass Transfer, 51 (2008) 3548-3555. [10] P. Bharadwaj, A.D. Khondge, A.W. Date, Heat transfer and pressure drop in a spirally grooved tube with twisted tape insert, International Journal of Heat and Mass Transfer, 52(7-8) (2009) 1938-1944. [11] Ö. Ağra, H. Demir, Ş.Ö. Atayılmaz, F. Kantaş, A.S. Dalkılıç, Numerical investigation of heat transfer and pressure drop in enhanced tubes, International Communications in Heat and Mass Transfer, 38(10) (2011) 1384-1391. [12] P. JASINSKI, Numerical Study of Friction Factor and Heat Transfer Characteristics for Single-Phase Turbulent Flow in Tubes with Helical Micro-Fins, Archive of Mechanical Engineering, (2012). [13] M.A. Akhavan-Behabadi, F. Hekmatipour, S.M. Mirhabibi, B. Sajadi, An empirical study on heat transfer and pressure drop properties of heat transfer oil-copper oxide nanofluid in microfin tubes, International Communications in Heat and Mass Transfer, 57 (2014) 150-156. [14] A. Celen, A.S. Dalkilic, S. Wongwises, Experimental analysis of the single phase pressure drop characteristics of smooth and microfin tubes, International Communications in Heat and Mass Transfer, 46 (2013) 58-66. [15] Celen, N. Kayaci, A. Çebi, H. Demir, A.S. Dalkılıç, S. Wongwises, Numerical investigation for the calculation of TiO2–water nanofluids' pressure drop in plain and enhanced pipes, International Communications in Heat and Mass Transfer, 53 (2014) 98-108. [16] M.M. Derakhshan, M.A. Akhavan-Behabadi, S.G. Mohseni, Experiments on mixed convection heat transfer and performance evaluation of MWCNT– Oil nanofluid flow in horizontal and vertical microfin tubes, Experimental Thermal and Fluid Science, 61 (2015) 241-248. [17] W.T. Ji, A.M. Jacobi, Y.L. He, W.Q. Tao, Summary and evaluation on single-phase heat transfer enhancement techniques of liquid laminar and turbulent pipe flow, International Journal of Heat and Mass Transfer, 88 (2015) 735-754. [18] G.-D. He, X.-M. Fang, T. Xu, Z.-G. Zhang, X.- N. Gao, Forced convective heat transfer and flow characteristics of ionic liquid as a new heat transfer fluid inside smooth and microfin tubes, International Journal of Heat and Mass Transfer, 91 (2015) 170-177. [19] F. Hekmatipour, M.A. Akhavan-Behabadi, B. Sajadi, Combined free and forced convection heat transfer of the copper oxide-heat transfer oil )CuO-HTO( nanofluid inside horizontal tubes under constant wall temperature, Applied Thermal Engineering, 100 (2016) 621-627. [20] T.H. Ko, Thermodynamic analysis of optimal curvature ratio for fully developed laminar forced convection in a helical coiled tube with uniform heat flux, International Journal of Thermal Sciences, 45(7) (2006) 729-737. [21] H. Shokouhmand, M.R. Salimpour, Optimal Reynolds number of laminar forced convection in a helical tube subjected to uniform wall temperature, International Communications in Heat and Mass Transfer, 34(6) (2007) 753-761. [22] J.S. Jayakumar, S.M. Mahajani, J.C. Mandal, P.K. Vijayan, R. Bhoi, Experimental and CFD estimation of heat transfer in helically coiled heat exchangers, Chemical Engineering Research and Design, 86(3) (2008) 221-232. [23] H. Shokouhmand, M.R. Salimpour, M.A. Akhavan- Behabadi, Experimental investigation of shell and coiled tube heat exchangers using wilson plots, International Communications in Heat and Mass Transfer, 35(1)(2008) 84-92. [24] M.R. Salimpour, Heat transfer coefficients of shell and coiled tube heat exchangers, Experimental Thermal and Fluid Science, 33(2) (2009) 203-207. [25] N. Ghorbani, H. Taherian, M. Gorji, H. Mirgolbabaei, Experimental study of mixed convection heat transfer in vertical helically coiled tube heat exchangers, Experimental Thermal and Fluid Science, 34(7) (2010) 900-905. [26] M. Fakoor-Pakdaman, M.A. Akhavan-Behabadi, P. Razi, An empirical study on the pressure drop characteristics of nanofluid flow inside helically coiled tubes, International Journal of Thermal Sciences, 65 (2013) 206-213. [27] H. Bahremand, A. Abbassi, M. Saffar-Avval, Experimental and numerical investigation of turbulent nanofluid flow in helically coiled tubes under constant wall heat flux using Eulerian–Lagrangian approach, Powder Technology, 269 (2015) 93-100. [28] A. Alimoradi, F. Veysi, Prediction of heat transfer coefficients of shell and coiled tube heat exchangers using numerical method and experimental validation, International Journal of Thermal Sciences, 107 (2016) 196-208. [29] S.M. Hashemi, M.A. Akhavan-Behabadi, An empirical study on heat transfer and pressure drop characteristics of CuO–base oil nanofluid flow in a horizontal helically coiled tube under constant heat flux, International Communications in Heat and Mass Transfer, 39(1) (2012) 144-151. [30] M. Rakhsha, F. Akbaridoust, A. Abbassi, S.-A. Majid, Experimental and numerical investigations of turbulent forced convection flow of nano-fluid in helical coiled tubes at constant surface temperature, Powder Technology, 283 (2015) 178-189. [31] M. Khoshvaght-Aliabadi, S. Pazdar, O. Sartipzadeh, Experimental investigation of water based nanofluid containing copper nanoparticles across helical microtubes, International Communications in Heat and Mass Transfer, 70 (2016) 84-92. [32] T. Srinivas, A. Venu Vinod, Heat transfer intensification in a shell and helical coil heat exchanger using water-based nanofluids, Chemical Engineering and Processing: Process Intensification, 102 (2016) 1-8. [33] S. Rainieri, F. Bozzoli, L. Cattani, G. Pagliarini, Compound convective heat transfer enhancement in helically coiled wall corrugated tubes, International Journal of Heat and Mass Transfer, 59 (2013) 353-362. [34] M. Mahmoudi, M.R. Tavakoli, M.A. Mirsoleimani, Gholami, M.R. Salimpour, Experimental and numerical investigation on forced convection heat transfer and pressure drop in helically coiled pipes using TiO2/water nanofluid, International Journal of Refrigeration, 74 (2017) 627-643. [35] L. Li, W. Cui, Q. Liao, X. Mingdao, T.-C. Jen, Q. Chen, Heat transfer augmentation in 3D internally finned and microfinned helical tube, International Journal of Heat and Mass Transfer, 48(10) (2005) 1916-1925. [36] A. Monshi, M.R. Foroughi, M.R. Monshi, Modified Scherrer equation to estimate more accurately nano- crystallite size using XRD, World Journal of Nano Science and Engineering, 2(3) (2012) 154-160. [37] J.W. Rose, Heat-transfer coefficients, Wilson plots and accuracy of thermal measurements, Experimental Thermal and Fluid Science, 28(2-3) (2004) 77-86. [38] V. Kumar, S. Saini, M. Sharma, K.D.P. Nigam, Pressure drop and heat transfer study in tube-in- tube helical heat exchanger, Chemical Engineering Science, 61(13) (2006) 4403-4416. [39] N. Jamshidi, M. Farhadi, D.D. Ganji, K. Sedighi, Experimental analysis of heat transfer enhancement in shell and helical tube heat exchangers, Applied Thermal Engineering, 51(1-2) (2013) 644-652. [40] X. Lu, X. Du, M. Zeng, S. Zhang, Q. Wang, Shell-side thermal-hydraulic performances of multilayer spiral- wound heat exchangers under different wall thermal boundary conditions, Applied Thermal Engineering, 70(2) (2014) 1216-1227. | ||
|
آمار تعداد مشاهده مقاله: 1,332 تعداد دریافت فایل اصل مقاله: 1,390 |
||