ارزیابی انرژی و اگزرژی یک کلکتور خورشیدی سهموی مجهز به لوله‌ جاذب پره داخلی و توربولاتور ستاره‌ای‌‌

نوع مقاله : مقاله پژوهشی

نویسنده

گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه زابل، زابل، ایران

چکیده

در این مقاله، عملکرد انرژی و اگزرژی یک کلکتور خورشیدی سهموی خطی حاوی روغن حرارتی با دریافت‌کننده مجهز به پره داخلی و توربولاتور ستاره‌ای‌شکل به صورت عددی مطالعه شده است. جریان سیال داخل لوله جاذب کلکتور به صورت مغشوش و عدد رینولدز در بازه‌ی 104×2 تا 105 در نظر گرفته شده است. به منظور شبیه‌سازی جریان سیال از نرم‌افزار انسیس- فلوئنت استفاده شده است. در این مقاله از یک لوله جاذب جدید مجهز به پره داخلی و توربولاتور ستاره‌ای شکل با پره‌های طولی مستطیلی استفاده شده و لوله جاذب پره مرکب نامیده شده است. بر این اساس عملکرد انرژی و اگزرژی کلکتور با وجود و یا عدم وجود پره و توربولاتور در داخل لوله جاذب در 6 حالت مختلف مقایسه و تحلیل شده است. بررسی نتایج نشان داد که کلکتور با لوله جاذب پره مرکب با پره داخلی بزرگ بیشترین بازده انرژی و اگزرژی را دارد. همچنین بیشترین افزایش بازده انرژی و اگزرژی کلکتور هنگام استفاده از این نوع لوله جاذب به‌جای لوله جاذب ساده به ترتیب برابر با 96/5 و 76/6 درصد است. از طرفی دیگر نتایج نشان داد که مقادیر معیار ارزیابی عملکرد برای لوله‌های جاذب پره مرکب با پره داخلی بزرگ و لوله جاذب پره داخلی بزرگتر از 1 و بیشترین مقدار آن 62/1 نتیجه شد.

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Evaluation of energy and exergy of a parabolic trough solar collector equipped with internal fin and star turbulator absorber tube

نویسنده [English]

  • Farhad Vahidinia
Department of Mechanical Engineering, Faculty of Engineering, University of Zabol, Zabol, Iran
چکیده [English]

In this paper, the energy and exergy performance of a parabolic trough solar collector containing thermal oil with a receiver equipped with an internal fin and a star shaped turbulator is numerically studied. The fluid flow inside the absorber tube of the collector is turbulent and the Reynolds number is considered in the range of 2×104 to 105. Ansys-Fluent software was used to simulate the fluid flow. In this study, a new absorber tube equipped with an internal fin and a star shaped turbulator with rectangular longitudinal fins is used and is called the combined fin absorber tube. accordingly, the energy and exergy performance of the collector with or without fin and turbulator inside the absorber tube has been compared and analyzed for 6 different states. The analysis of the results showed that the collector with the combined fin absorber tube with the large internally fin has the highest energy and exergy efficiency. Also, the highest enhancement in the energy and exergy efficiencies of the collector when using this type of absorber tube instead of the smooth absorber are 5.96% and 6.76%, respectively. On the other hand, the results showed that the values of the performance evaluation criteria for the combined fin absorber tube with large internally fins and internally fin absorber tube were greater than 1, and the highest value was 1.62.

کلیدواژه‌ها [English]

  • Parabolic trough solar collector
  • Combined fin absorber tube. Turbulator
  • Exergy
  • Energy
  • Performance evaluation criteria
  1. Nikzad, M. Chahartaghi, and M. H. Ahmadi, “Technical, economic, and environmental modeling of solar water pump for irrigation of rice in Mazandaran province in Iran: A case study”, Journal of Cleaner Production, vol. 239, p. 118007, (2019). https://doi.org/10.1016/j.jclepro.2019.118007
  2. L. I. Jabri, M. R. Ansari, and M. Marefat, “Feasibility of the performance of thermal photovoltaic systems in residential units in the climate of four cities of Abadan, Baghdad, Basra, and Tehran in terms of energy saving”, Journal of Applied and Computational Sciences in Mechanics, vol. 35, no. 3, pp. 33–50, 2023. (In Persian). https://doi.org/10.22067/jacsm.2023.79017.1141
  3. S. Barghi Jahromi, M. Iranmanesh and H. Samimi Akhijahani, “Thermo-Economic evaluation of a solar dryer with evacuated heat pipe collector and energy storage”, Journal of Applied and Computational Sciences in Mechanics, vol. 32, no. 1, pp. 39–58, 2021. (In Persian). https://doi.org/ 10.22067/jacsm.2022.75507.1104
  4. Mohammadi, H. Khorasanizadeh, “The potential and deployment viability of concentrated solar power (CSP) in Iran”, Energy Strategy Reviews, vol. 24, pp. 358–369, (2019). https://doi.org/10.1016/j.esr.2019.04.008
  5. Vahidinia, H. Khorasanizadeh and A. Aghaei, “Energy, exergy, economic and environmental evaluations of a finned absorber tube parabolic trough collector utilizing hybrid and mono nanofluids and comparison”, Renewable Energy, vol. 205, pp. 185–199, (2023). https://doi.org/10.1016/j.renene.2023.01.085
  6. S. Mahmoud, A. S. Abbas and A. F. Khudheyer, “Solar parabolic trough collector tube heat transfer analysis with internal conical pin fins,” Journal of Green Engineering, vol. 10, no. 10, pp. 7422–7436, (2020).
  7. S. Reddy and G. V Satyanarayana, “Numerical study of porous finned receiver for solar parabolic trough concentrator”, Engineering Applications of Computational Fluid Mechanics, vol. 2, no. 2, pp. 172–184, (2008). https://doi.org/10.1080/19942060.2008.11015219
  8. Huang, G. L. Yu, Z. Y. Li and W. Q. Tao, “Numerical study on heat transfer enhancement in a receiver tube of parabolic trough solar collector with dimples, protrusions and helical fins”, Energy Procedia, vol. 69, pp. 1306–1316, (2015). https://doi.org/10.1016/j.egypro.2015.03.149
  9. Bellos, C. Tzivanidis and D. Tsimpoukis, “Thermal enhancement of parabolic trough collector with internally finned absorbers”, Solar Energy, vol. 157, pp. 514–531, (2017). https://doi.org/10.1016/j.solener.2017.08.067
  10. Bellos, C. Tzivanidis and D. Tsimpoukis, “Multi-criteria evaluation of parabolic trough collector with internally finned absorbers”, Applied Energy, vol. 205, pp. 540–561, (2017). https://doi.org/10.1016/j.apenergy.2017.07.141
  11. Gong, F. Wang, H. Wang, J. Tan, Q. Lai and H. Han, “Heat transfer enhancement analysis of tube receiver for parabolic trough solar collector with pin fin arrays inserting”, Solar Energy, vol. 144, pp. 185–202, (2017).https://doi.org/10.1016/j.solener.2017.01.020
  12. Huang, Z.-Y. Li, G.-L. Yu and W.-Q. Tao, “Numerical investigations on fully-developed mixed turbulent convection in dimpled parabolic trough receiver tubes”, Applied Thermal Engineering, vol. 114, pp. 1287–1299, (2017). https://doi.org/10.1016/j.applthermaleng.2016.10.012
  13. Laaraba, G. Mebarki, “Enhancing thermal performance of a parabolic trough collector with inserting longitudinal fins in the down half of the receiver tube”, Journal of Thermal Science, vol. 29, no. 5, pp. 1309–1321, (2020).
  14. Fatouh, N. Saad and A. M. M. Abdala, “Effects of Fins Base Rounding on Heat Transfer Characteristics of Absorber Tube of Parabolic Trough Collector”, Arabian Journal for Science and Engineering, vol. 48, no. 3, pp. 2851–2871, (2023).
  15. Kurşun, “Thermal performance assessment of internal longitudinal fins with sinusoidal lateral surfaces in parabolic trough receiver tubes”, Renewable Energy, vol. 140, pp. 816–827, 2019.
  16. Gong, J. Wang, P. D. Lund, D. Zhao, J. Xu and Y. Jin, “Comparative study of heat transfer enhancement using different fins in semi-circular absorber tube for large-aperture trough solar concentrator”, Renewable Energy, vol. 169, pp. 1229–1241, (2021). https://doi.org/10.1016/j.renene.2020.12.054
  17. Amina, A. Miloud, L. Samir, B. Abdelylah and J. P. Solano, “Heat transfer enhancement in a parabolic trough solar receiver using longitudinal fins and nanofluids”, Journal of Thermal Science, vol. 25, no. 5, pp. 410–417, (2016). https://doi.org/10.1007/s11630-016-0878-3
  18. S. Khan, M. Yan, H. M. Ali, K. P. Amber, M. A. Bashir, B. Akbar and S. Javad, “Comparative performance assessment of different absorber tube geometries for parabolic trough solar collector using nanofluid”, Journal of Thermal Analysis and Calorimetry, vol. 142, no. 6, pp. 2227–2241, (2020).
  19. Bellos, C. Tzivanidis, “Enhancing the performance of evacuated and non-evacuated parabolic trough collectors using twisted tape inserts, perforated plate inserts and internally finned absorber”, Energies, vol. 11, no. 5, p. 1129, (2018). https://doi.org/10.3390/en11051129
  20. Bellos, C. Tzivanidis, “Investigation of a star flow insert in a parabolic trough solar collector”, Applied Energy, vol. 224, pp. 86–102, (2018). https://doi.org/10.1016/j.apenergy.2018.04.099
  21. Mwesigye, T. Bello-Ochende and J. P. Meyer, “Heat transfer and entropy generation in a parabolic trough receiver with wall-detached twisted tape inserts”, International Journal of Thermal Sciences, vol. 99, pp. 238–257, (2016). https://doi.org/10.1016/j.ijthermalsci.2015.08.015
  22. Mwesigye, T. Bello-Ochende and J. P. Meyer, “Numerical investigation of entropy generation in a parabolic trough receiver at different concentration ratios”, Energy, vol. 53, pp. 114–127, (2013). https://doi.org/10.1016/j.energy.2013.03.006
  23. Malekan, A. Khosravi and S. Syri, “Heat transfer modeling of a parabolic trough solar collector with working fluid of Fe3O4 and CuO/Therminol 66 nanofluids under magnetic field”, Applied Thermal Engineering, vol. 163, p. 114435, (2019). https://doi.org/10.1016/j.applthermaleng.2019.114435
  24. A. Duffie, W. A. Beckman and N. Blair, Solar Engineering of Thermal Processes, Photovoltaics and Wind. John Wiley & Sons, (2020).
  25. Bellos and C. Tzivanidis, “Thermal analysis of parabolic trough collector operating with mono and hybrid nano fluids”, Sustainable Energy Technologies and Assessments, vol. 25, pp. 105-115, (2017).https://doi.org/10.1016/j.seta.2017.10.005
  26. Bellos, C. Tzivanidis, “Thermal efficiency enhancement of nanofluid-based parabolic trough collectors”, Journal of Thermal Analysis and Calorimetry, vol. 135, pp. 579-608, (2018). https://doi.org/10.1016/j.applthermaleng.2019.114435
  27. Behar, A. Khellaf, and K. Mohammedi, “A novel parabolic trough solar collector model–Validation with experimental data and comparison to Engineering Equation Solver (EES)”, Energy Conversion and Management, vol. 106, pp. 268–281, (2015). https://doi.org/10.1016/j.enconman.2015.09.045
  28. Shafiey Dehaj, M. Mirzaei, and M. Zamani Mohiabadi, “Numerical and Experimental Investigation on the Parabolic Dish SolarConcentrator,” Journal of Applied and Computational Sciences in Mechanics, vol. 32, no. 1, pp. 17–38, 2021. (In Persian).https://doi.org/10.22067/JACSM.2021.56667.0.
  29. Vahidinia, H. Khorasanizadeh and A. Aghaei, “Comparative energy, exergy and CO2 emission evaluations of a LS-2 parabolic trough solar collector using Al2O3/SiO2-Syltherm 800 hybrid nanofluid”, Energy Conversion and Management, vol. 245, pp. 114596, )2021(. https://doi.org/10.1016/j.enconman.2021.114596
  30. L. Bergman, A. Lavine, F. P. Incropera and D. P. Dewitt, Fundamentals of heat and mass transfer. John Wiley & Sons New York, )2017(.
  31. C. Swinbank, “Long‐wave radiation from clear skies”, Quarterly Journal of the Royal Meteorological Society, vol. 89, no. 381, pp. 339–348, (1963).https://doi.org/10.1002/qj.49708938105
  32. C. Mullick and S. K. Nanda, “An improved technique for computing the heat loss factor of a tubular absorber”, Solar Energy, vol. 42, no. 1, pp. 1–7, (1989). https://doi.org/10.1016/0038-092X(89)90124-2
  33. Mwesigye, J. P. Meyer, “Optimal thermal and thermodynamic performance of a solar parabolic trough receiver with different nanofluids and at different concentration ratios”, Applied Energy, vol. 193, pp. 393–413, (2017). https://doi.org/10.1016/j.apenergy.2017.02.064
  34. Forristall, “Heat Transfer Analysis and Modeling of a Parabolic Trough Solar Receiver Implemented in Engineering Equation Solver Heat Transfer Analysis and Modeling of a Parabolic Trough Solar Receiver Implemented in Engineering Equation Solver”, (2003).
  35. R. Kalateh, A. Kianifar and M. Sardarabadi, “Experimental study and numerical modeling of the effect of utilizing selected twisted tape insert on the performance of thermal photovoltaic system”, Journal of Applied and Computational Sciences in Mechanics, vol. 33, no. 2, pp. 1–22, (2022). (In Persian). https://doi.org/10.22067/JACSM.2022.74538.1083
  36. Petela, “Exergy of undiluted thermal radiation”, Solar Energy, vol. 74, no. 6, pp. 469–488, (2003). https://doi.org/10.1016/S0038-092X(03)00226-3
  37. Dowtherm, “Heat transfer fluid”, Productive Technolgy data, (1997).
  38. Song, G. Dong, F. Gao, X. Diao, L. Zheng and F. Zhou, “A numerical study of parabolic trough receiver with nonuniform heat flux and helical screw-tape inserts”, Energy, vol. 77, pp. 771–782, (2014). https://doi.org/10.1016/j.energy.2014.09.049
  39. E. Dudley et al., “Test results: SEGS LS-2 solar collector”, Sandia National Lab, Albuquerque, NM (United States), (1994).
  40. Zaboli, S. S. M. Ajarostaghi, S. Saedodin and B. Kiani, “Hybrid nanofluid flow and heat transfer in a parabolic trough solar collector with inner helical axial fins as turbulator”, European Physical Journal . Plus, vol. 136, no. 8, p. 841, (2021). https://doi.org/10.1140/epjp/s13360-021-01807-z
  41. Vahidinia, M. Miri and B. Keshtegar, “Study of entropy generation and evaluation statistical heat transfer properties in turbulent flow”, Journal of Applied and Computational Sciences in Mechanics, vol. 29, no. 1, pp. 63–80, (2017). (In Persian). https://doi.org/10.22067/FUM-MECH.V29I1.59586.
  42. Vahidinia, G. A. Sheikhzadeh, “The Friction Factor of Turbulent Flow of the Base Fluid and Nanofluid in the Statistical Approach”, Journal of Applied and Computational Sciences in Mechanics, vol. 31, no. 1, pp. 39–58, (2020). (In Persian). https://doi.org/10.22067/FUM-MECH.V31I1.81926.
  43. K. Pazarlıoğlu, R. Ekiciler, K. Arslan and N. A. M. Mohammed, “Exergetic, Energetic, and entropy production evaluations of parabolic trough collector retrofitted with elliptical dimpled receiver tube filled with hybrid nanofluid”, Applied Thermal Engineering, vol. 223, p. 120004, (2023). https://doi.org/10.1016/j.applthermaleng.2023.120004
CAPTCHA Image