افزایش عملکرد حرارتی سیستم ذخیره سازی گرماي نهان با استفاده از پره هاي موج دار و تغییر هندسه لوله
محورهای موضوعی : یافته های نوین کاربردی و محاسباتی در سیستم های مکانیکی
1 - گروه مهندسی مکانیک، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران
2 - گروه مهندسی مکانیک، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران
کلید واژه: ماده تغییر فاز دهنده, ذخیره سازي انرژي گرماي نهان, پره موج دار, انتقال حرارت.,
چکیده مقاله :
در این پژوهش بهبود عملکرد حرارتی سیستم ذخیره سازي انرژي گرماي نهان با استفاده از پره هاي موج دار و تغییر هندسه لوله حاوي سیال انتقال حرارت به صورت عددي بررسی شده است. سیستم مورد بررسی از نوع مبدل حرارتی پوسته و لوله بوده و پارافین RT35 به عنوان ماده تغییر فاز دهنده به کار گرفته شده است. با ثابت در نظر گرفتن سطح مقطع کل لوله و پره ها و همچنین حجم ماده تغییر فاز دهنده، تأثیر شکل لوله حاوي سیال انتقال حرارت و پره طراحی شده بر فرآیند ذوب ماده تغییر فاز دهنده بررسی شده است. نتایج شبیه سازي عددي نشان می دهد پره هاي موج دار باعث تسریع فرآیند تغییر فاز در مقایسه با پره هاي مستقیم متداول می شوند. زمان ذوب کامل ماده تغییر فاز دهنده با استفاده از پره موج دار %9/33 در مقایسه با پره مستقیم کاهش می یابد. تغییر هندسه لوله حاوي سیال انتقال حرارت از دایره اي به شکل گلبرگ براي بهبود بیشتر عملکرد حرارتی سیستم ذخیره انرژي گرماي نهان پیشنهاد شده است. سرعت ذوب ماده تغییر فاز دهنده با افزایش تعداد گلبرگ ها افزایش می یابد. زمان ذوب کامل براي لوله با هفت گلبرگ تا %66/7 در مقایسه با لوله دایره اي با پره هاي موج دار و %69/8 نسبت به حالت مبنا با پره هاي مستقیم کاهش می یابد.
In this work, thermal performance improvement of the latent heat energy storage system using wavy fins and change in the heat transfer fluid tube geometry is numerically investigated. The investigated system is a shell and tube heat exchanger and RT35 paraffin is used as the phase change material. With the constant total cross-section area of the tube and fins as well as the volume of the phase change material, the effect of heat transfer fluid tube shape and the designed fin on the melting process of the phase change material is investigated. Numerical simulation results show that wavy fins accelerate the phase change process compared to conventional straight fins. The complete melting time of the phase change material is reduced by 9.33% compared to the straight fin. Changing the geometry of the heat transfer fluid tube from the circle to the petal shape is proposed to further improve the thermal performance of the latent heat energy storage system. The melting rate of the phase change material increases with the increase in the number of petals. The complete melting time for the tube with seven petals is reduced by 66.7% compared to the circular tube with wavy fins and 69.8% compared to the base case with straight fins.
[1] Al-Abidi, A.A., Mat, S., Sopian, K., Sulaiman, M.Y., Mohammad, A.Th., (2013), Internal and External Fin Heat Transfer Enhancement Technique for Latent Heat Thermal Energy Storage in Triplex Tube Heat Exchangers, Applied Thermal Engineering 53, pp 147-156.
[2] Tao, Y.B., He, Y.-L., (2018) , A Review of Phase Change Material and Performance Enhancement Method for Latent Heat Storage System, Renewable and Sustainable Energy Reviews 93, pp 245–259.
[3] Kothari, R., Ahmad, A., Chaurasia, S.K., Prakash, O., (2022), Experimental Analysis of The Heat Transfer Rate of Phase Change Material Inside a Horizontal Cylindrical Latent Heat Energy Storage System, Material Science for Energy Technologies 5, pp 208-216.
[4] Joulin, A., Younsi, Z., Zalewski, L., Lassue, S., Rousse, D.R., Cavrot, J.-P., (2011), Experimental and Numerical Investigation of a Phase Change Material: Thermal Energy Storage and Release, Applied Energy 88, pp 2454-2462.
[5] Agyenim, F., Hewitt, N., Emaes, P., Smyth, M., (2010), A Review of Materials, Heat Transfer and Phase Change Problem Formulation for Latent Heat Thermal Energy Storage Systems (LHTESS), Renewable and Sustainable Energy Reviews 14, pp 615-628.
[6] Liu, C., Murray, R.E., Groulx, D., (2012), Experimental Study of Cylindrical Latent Heat Energy Storage Systems Using Lauric Acid as the Phase Change Material, ASME 2012 heat transfer summer conference, pp 447-456.
[7] Ding, C., Pei, J., Wang, S., Wang, Y., (2023), Evaluation and Comparison of Thermal Performance of Latent Heat Storage Units with Shell-and-Tube, Rectangular and Cylindrical Configurations, Applied Thermal Engineering 218, 119364.
[8] Qureshi, Z.A., Ali, H.M., Khushnood, S., (2018), Recent Advances on Thermal Conductivity Enhancement of Phase Change Materials for Energy Storage System: A Review. International Journal of Heat and Mass Transfer 127, pp 838–56.
[9] Ao, C., Yan, S., Hu, W., Zhao, L., Wu, Y., (2022), Heat Transfer Analysis of a PCM in Shell-and- Tube Thermal Energy Storage Unit with Different V-Shaped Fin Structures, Applied Thermal Engineering 216, 119079.
[10] Li, J., Abdulghani, Z.R., Alghamdi, M.N., Sharma, K., Niyas, H., Moria, H., Arsalanloo, A., (2023), Effect of Twisted Fins on The Melting Performance of PCM in a Latent Heat Thermal Energy Storage System in Vertical and Horizontal Orientations: Energy and Exergy Analysis, Applied Thermal Engineering 219, 119489.
[11] Shen, S., Zhou, H., Du, Y., Huo, Y., Rao, Z., (2023), Investigation on Latent Heat Energy Storage Using Phase Change Material Enhanced by Gradient-Porosity Metal Foam, Applied Thermal Engineering, 121760.
[12] Sarani, I., Payan, S., Nada, S.A., Payan, A., (2020), Numerical Investigation of an Innovative Discontinuous Distribution of Fins for Solidification Rate Enhancement in PCM with and without Nanoparticles, Applied Thermal Engineering 176, 115017.
[13] Sun, X., Liu, L., Mo, Y., Li, J., Li, C., (2020), Enhanced Thermal Energy Storage of a Paraffin- Based Phase Change Material (PCM) Using Nano Carbons, Applied Thermal Engineering 181, 115992.
[14] Abdolahimoghadam, M., Rahimi, M., (2023), A Numerical Evaluation of a Latent Heat Thermal Energy Storage System in The Presence of Various Type of Nanoparticles, Applied Thermal Engineering 230, 120854.
[15] Nie, C., Liu, J., Deng, S., (2021), Effect of Geometry Modification on The Thermal Response of Composite Metal Foam / Phase Change Material for Thermal Energy Storage, International Journal of Heat and Mass Transfer 165, 120652.
[16] Kumar, A., Verma, P., Varshney, L., (2022), An Experimental and Numerical study on Phase Change Material Melting Rate Enhancement for a Horizontal Semi-Circular Shell and Tube Thermal Energy Storage System, Journal of Energy Storage 45, 103734.
[17] Sodhi, G.S., Vigneshwaran, K., Muthukumar, P., (2021), Experimental Investigations of High- Temperature Shell and Multi-Tube Latent Heat Storage System, Applied Thermal Engineering 198, 117491.
[18] Rathod, M.K., Banerjee, J., (2015), Thermal Performance Enhancement of Shell and Tube Latent Heat Storage Unit Using Longitudinal Fins, Applied Thermal Engineering 75, 1084-92.
[19] Parsazadeh, M., Duan, X., (2018), Numerical Study on The Effects of Fins and Nanoparticles in a Shell and Tube Phase Change Thermal Energy Storage Uunit, Applied Energy 216, pp142-156.
[20] Aly, K.A., El-Lathy, A.R., Fouad, M.A., (2019), Enhancement of Solidification Rate of Latent Heat Thermal Energy Storage Using Corrugated Fins, Journal of Energy Storage 24, 100785.
[21] Liu, S., Peng, H., Hu, Z., Ling, X., Huang, J., (2019), Solidification Performance of a Latent Heat Storage Unit with Innovative Longitudinal Triangular Fins, International Journal of Heat and Mass Transfer 138, pp 667–676.
[22] Huang, X., Yao, S., (2021), Solidification Performance of a New Trapezoidal Longitudinal Fins in Latent Heat Thermal Energy Storage, Case Studies in Thermal Engineering 26, 101110. [23] Safari, V., Abolghasemi, H., Kamkari, B., (2021), Experimental and Numerical Investigations of Thermal Performance Enhancement in a Latent Heat Storage Heat Exchanger Using Bifurcated and Straight Fins, Renewable Energy 174, pp 102–121.
[24] Liu, Z., Liu, Z., Guo, J., Wang, F., Yang, X., Yan, J., (2022) Innovative Ladder-Shaped Fin Design on a Latent Heat Storage Device for Waste Heat Recovery, Applied Energy 321, 119300.
[25] Huang, Y., Song, L., Wu, S., Liu, X., (2022), Investigation on The Performance of a Multi-Tube Finned Latent Heat Thermal Storage Pool, Applied Thermal Engineering 200, 117658.
[26] Sheikholeslami, M., Nematpour Keshteli, A., Shafee, A., (2020), Melting and Solidification within an Energy Storage Unit with Triangular Fin and CuO Nano Particles, Jornal of Energy Storage 32, 101716.
[27] ANSYS Academic Research, “ANSYS fluent theory guide,” 2019.
[28] Brent, A.D., Voller, V.R., Reid, K.J., (1988), Enthalpy-Porosity Technique for Modeling Convection-Diffusion Phase Change: Application to The Melting of a Pure Metal, Numerical Heat Transfer 13, pp 297-318.