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Heat Transfer Enhancement in a Spiral Plate Heat Exchanger Model Using Continuous Rods | ||
| Journal of Heat and Mass Transfer Research | ||
| مقاله 71، دوره 7، شماره 1 - شماره پیاپی 13، مرداد 2020، صفحه 39-53 اصل مقاله (1.92 M) | ||
| نوع مقاله: Full Length Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/jhmtr.2020.18783.1251 | ||
| نویسندگان | ||
| Rahim Hassanzadeh* ؛ Sohail Nasrollahzadeh | ||
| Faculty of Mechanical Engineering, Urmia University of Technology, Urmia, Iran | ||
| تاریخ دریافت: 02 مهر 1398، تاریخ بازنگری: 04 اسفند 1398، تاریخ پذیرش: 24 بهمن 1398 | ||
| چکیده | ||
| This study presents an innovative and simple way to increase the rate of heat transfer in a spiral plate heat exchanger model. Several circular cross-section rods, as continuous vortex generators, have been inserted within the spiral plate heat exchanger in the cross-stream plane. The vortex generators are located at various azimuth angles of α=30◦, 60◦, 90◦, and 120◦ with non-dimensional diameters of d/H=0.3, 0.4, and 0.5. Computations have been carried out numerically by means of the finite volume approach under different Dean numbers (De) ranging from 500 to 1500 in the laminar regime. The flow physics within the advanced spiral heat exchanger model has been discussed using several velocity and temperature contours. It was found that by inserting the continuous vortex generators in the cross-stream plane of a spiral plate heat exchanger, the unsteady flow develops within the channel in which the rate of unsteadiness is proportional to d/H and De directly and to azimuth angle inversely. The maximum heat transfer enhancement with respect to the conventional spiral plate heat exchanger (without continuous vortex generators) is found to be 341% for α=30◦, d/H=0.5, and De=1500. Additionally, values of pressure drop penalty and thermal-hydraulic performance have been determined accordingly. | ||
| کلیدواژه‌ها | ||
| Spiral plate heat exchanger؛ Continuous vortex generators؛ Heat transfer enhancement؛ Unsteady flow | ||
| عنوان مقاله [English] | ||
| افزایش انتقال گرما در یک مدل مبدل حرارتی صفحه حلزونی با استفاده از میله های پیوسته | ||
| چکیده [English] | ||
| این تحقیق، روشی خلاقانه و ساده ای را برای افزایش نرخ انتقال گرما در یک مدل مبدل حرارتی صفحه حلزونی، ارائه می دهد. تعدادی میله با مقطع دایروی بعنوان مولد های گردابه ای درون مبدل صفحه حلزونی در مقطع عرضی قرار داده می شود. مولدهای گردابه ای در زوایای فضایی مختلفی همچون α=30°, 60°, 90°, 120° با قطرهای بی بعد d/H=0.3, 0.4, 0.5 درون مبدل صفحه حلزونی قرار داده می شوند. محاسبات بصورت عددی با روش حجم محدود تحت اعداد دین (De) مختلف در محدوده 500 تا 1500 در رژیم آرام انجام می گردد. فیزیک جریان با استفاده از کنتورهای سرعت و دمای مختلف بحث خواهد شد. مشخص گردید که با قرار گیری مولدهای گردابه ای پیوسته در مقطع عرضی یک مبدل حرارتی صفحه حلزونی، جریان ناپایا درون کانال شکل می گیرد که نرخ ناپایداری بطور مستقیم با d/H و De و بطور معکوس با زاویه فضایی متناسب می باشد. معلوم گردید که بیشترین افزایش انتقال گرما نسبت به مبدل صفحه حلزونی رایج (بدون مولد های گردابه ای پیوسته) به اندازه 341% مربوط به حالت α=30°, d/H=0.5, De=1500 می باشد. مضافأ اینکه، مقادیر افزایش افت فشار و عملکرد گرمایی-هیدرولیکی تعیین خواهند شد. | ||
| کلیدواژه‌ها [English] | ||
| مبدل صفحه حلزونی, مولد های گردابه ای پیوسته, افزایش انتقال گرما, جریان ناپایا | ||
| مراجع | ||
|
[1] Saeidi, R., Noorollahi, Y. and Esfahanian, V., 2018. Numerical simulation of a novel spiral type ground heat exchanger for enhancing heat transfer performance of geothermal heat pump, Energy Conversion and Management ,168 ,pp.296-307.
[2] Bahiraei, M. and Ahmadi, A.A., 2018. Thermohydraulic performance analysis of a spiral heat exchanger operated with water – alumina nanofluid : Effects of geometry and adding nanoparticles. Energy Conversion and Management, 170, pp.62-72.
[3] Zhao, Q., Liu, F., Liu, C., Tian, M. and Chen, B., 2017. Influence of spiral pitch on the thermal behaviors of energy piles with spiral-tube heat exchanger. Applied Thermal Engineering, 125, pp.1280-1290.
[4] Li, H., Nagano, K. and Lai, Y., 2012. Heat transfer of a horizontal spiral heat exchanger under groundwater advection. International Journal of Heat and Mass Transfer, 55, pp.6819–6831.
[5] Dehghan B, B., 2017. Experimental and computational investigation of the spiral ground heat exchangers for ground source heat pump applications Coefficient of Performance. Applied Thermal Engineering, 121, pp.908–921.
[6] Wang, S., Jian, G., Xiao, J., Wen, J., Zhang, A. and Tu, J., 2018. Fluid-thermal-structural analysis and structural optimization of spiral- wound heat exchanger. International Communication in Heat and Mass Transfer, 95, pp.42–52.
[7] Abdel-Aziz, M.H. and Sedahmed, G.H., 2019. Natural convection mass and heat transfer at a horizontal spiral tube heat exchanger. Chemical Engineering Research and Design, 145, pp.122-127.
[8] Sharqawy, M.H., Saad S.M.I. and Ahmed, K.K., 2019. Effect of flow configuration on the performance of spiral- wound heat exchanger. Applied Thermal Engineering, 161, 114157.
[9] Ardahaie, S.S., Hosseini, M.J., Ranjbar, A.A. and Rahimi, M., 2019. Energy storage in latent heat storage of a solar thermal system using a novel flat spiral tube heat exchange. Applied Thermal Engineering, 159, 113900.
[10] Mohamad Gholy Nejad, P., Solaimany Nazar, A.R., Rahimi-Ahar, Z. and Rajati, H., 2019. Investigation on turbulent nanofluid flow in helical tube in tube heat exchangers. Journal of Heat and Mass Transfer Research, 6, pp.31-39.
[11] da Silva, F.A.S., Dezan, D.J., Pantaleão, A.V. and Salviano, L.O., 2019. Longitudinal vortex generator applied to heat transfer enhancement of a flat plate solar water heater. Applied Thermal Engineering, 158, 113790.
[12] Wang, Y., Liu, P., Shan, F., Liu, Z. and Liu, W., 2018. Effect of longitudinal vortex generator on the heat transfer enhancement of a circular tube. Applied Thermal Engineering, 148, pp.1018-1028.
[13] Garelli, L., Rodriguez, G.R., Dorella, J.J. and Storti, M.A., 2019. Heat transfer enhancement in panel type radiators using delta-wing vortex generators. International Journal of Thermal Science, 137, pp.64–74.
[14] Yang, J.S., Jeong, M., Park, Y.G. and Ha, M.Y., 2019. Numerical study on the flow and heat transfer characteristics in a dimple cooling channel with a wedge-shaped vortex generator. International Journal of Heat and Mass Transfer, 136, pp.1064–1078.
[15] Ke, Z., Chen, C.L., Li, K., Wang, S. and Chen, C.H., 2019. Vortex dynamics and heat transfer of longitudinal vortex generators in a rectangular channel. International Journal of Heat and Mass Transfer, 132, pp.871–885. 52 S. Nasrollahzadeh Sabet / JHMTR 7 (2020) 39-53
[16] Jiansheng, W., Yu, J. and Xueling, L., 2019. Heat transfer and flow characteristics in a rectangular channel with small scale vortex generators. International Journal of Heat and Mass Transfer, 138, pp.208–225.
[17] Oneissi, M., Habchi, C., Russeil, S., Lemenand, T. and Bougeard, D., 2018. Heat transfer enhancement of inclined projected winglet pair vortex generators with protrusions. International Journal of Thermal Science, 134, 541–551.
[18] Samadifar, M. and Toghraie, D., 2018. Numerical simulation of heat transfer enhancement in a plate-fin heat exchanger using a new type of vortex generators. Applied Thermal Engineering, 133, pp.671- 681.
[19] Gallegos, R.K.B. and Sharma, R.N., 2019. Heat transfer performance of flag vortex generators in rectangular channels. International Journal of Thermal Science, 137, pp.26–44.
[20] Li, J., Dang, C. and Hihara, E., 2019. Heat transfer enhancement in a parallel, finless heat exchanger using a longitudinal vortex generator, Part A : Numerical investigation. International Journal of Heat and Mass Transfer, 128, pp.87–97.
[21] Zhai, C., Islam, M.D., Simmons, R. and Barsoum, I., 2019. Heat transfer augmentation in a circular tube with delta winglet vortex generator pairs. International Journal of Thermal Science, 140, pp.480– 490.
[22] Han, Z., Xu, Z. and Wang, J., 2018. Numerical simulation on heat transfer characteristics of rectangular vortex generators with a hole. International Journal of Heat and Mass Transfer, 126, pp.993–1001.
[23] Aravind G.P. and Deepu, M., 2017. Numerical study on convective mass transfer enhancement by lateral sweep vortex generators. International Journal of Heat and Mass Transfer, 115, pp.809–825.
[24] Xu, Z., Han, Z., Wang, J. and Liu, Z., 2018. The characteristics of heat transfer and flow resistance in a rectangular channel with vortex generators. International Journal of Heat and Mass Transfer, 116, pp.61–72.
[25] Han, H., Wang, S., Sun, L., Li, Y. and Wang, S., 2019. Numerical study of thermal and flow characteristics for a fin-and-tube heat exchanger with arc winglet type vortex generators. International Journal of Refrigeration, 98, pp.61-69.
[26] Ma, T., Pandit, J., Ekkad, S.V., Huxtable, S.T. and Wang, Q., 2015. Simulation of thermoelectric-hydraulic performance of a thermoelectric power generator with longitudinal vortex generators. Energy, 84, pp.695-703.
[27] Deshmukh, P.W., Prabhu, S.V. and Vedula, R.P., 2016. Heat transfer enhancement for laminar flow in tubes using curved delta wing vortex generator inserts. Applied Thermal Engineering, 106, 1415–1426.
[28] Salviano, L.O., Dezan, D.J. and Yanagihara, J.I., 2016. Thermal-hydraulic performance optimization of inline and staggered fin-tube compact heat exchangers applying longitudinal vortex generators. Applied Thermal Engineering, 95, pp.311–329.
[29] Song, K., Tagawa, T., Chen, Z. and Zhang, Q., 2019. Heat transfer characteristics of concave and convex curved vortex generators in the channel of plate heat exchanger under laminar flow. International Journal of Thermal Science, 137, pp.215– 228.
[30] Liang, G., Islam, M.D., Kharoua, N. and Simmons, R., 2018. Numerical study of heat transfer and flow behavior in a circular tube fitted with varying arrays of winglet vortex generators. International Journal of Thermal Science, 134, pp.54–65.
[31] Luo, L., Wen, F., Wang, L., Sundén, B. and Wang, S., 2016. Thermal enhancement by using grooves and ribs combined with deltawinglet vortex generator in a solar receiver heat exchanger. Applied Energy, 183, pp.1317–1332. [32] Liu, H.L., Li, H., He, Y.L. and Chen, Z.T., 2018. Heat transfer and flow characteristics in a circular tube fitted with rectangular winglet vortex generators. International Journal of Heat and Mass Transfer, 126, pp.989–1006.
[33] Hassanzadeh, R. and Tokgoz, N., 2019. Analysis of heat and fluid flow between parallel plates by inserting triangular crosssection rods in the cross-stream plane. Applied Thermal Engineering, 160, 113981.
[34] Hassanzadeh, R., 2018. Effects of Unsteady flow generation over a hot plate on the cooling mechanism using a rotating cylinder. Arabian Journal for Science and Engineering, 43, pp.4463-4473.
[35] Patankar, S.V., 1980. Numerical heat transfer and fluid flow. Taylor & Francis, New York.
[36] Bodoia, J.R., 1959. The finite difference analysis of confined viscous flows. Ph.D. Thesis. Carnegie Institute of Technology, Pittsburgh, Pennsylvania.
[37] Liu, J., 1974. Flow of a Bingham fluid in the entrance region of an annular tube. M.S. Thesis. University of Wisconsin-Milwaukee. [38] Hwang, C.L., 1973. Personal communication. Dep. Ind. Eng., Kansas State University, Manhattan. S. Nasrollahzadeh Sabet / JHMTR 7 (2020) 39-53 53
[39] K. Stephan, K., 1959. Wärmeübergang und druckabfall bei nicht ausgebildeterlaminar strömung in rohren und in ebenen spalten. Chemie Ingenieur Technik, 31, pp.773-778.
[40] Cheraghi, M., Raisee, M. and Moghaddami, M., 2014. Effect of cylinder proximity to the wall on channel flow heat transfer enhancement. Comptes Rendus Mécanique, 342, pp.63–72 | ||
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