Analyses of entropy generation for a solar minichannel flat plate collector system using different types of nanofluids

Document Type : Research Paper

Authors

1 Mechanical Laboratory of Materials and Industrial Maintenance (LR3MI), Badji Mokhtar University, Annaba, Algeria

2 Departement of mechanical, University of BOUIRA, Algeria

Abstract

The working fluid plays a major role in improving the efficiency of the energy system, so the method and criteria of choice are extremely important. Nevertheless, these methods are usually based on the First Law of Thermodynamics (FLT), while the concepts of entropy and irreversibility on which the Second Law of Thermodynamics (SLT) is based are often ignored in the choice of the fluid. In this paper, a new approach is proposed to select a fluid among a group of fluids in order to use it as a working fluid in a Minichannel Flat Plate Solar Collector (MFPSC). For this, a numerical simulation was performed on a fluid in laminar flow in a small rectangular channel subjected to a uniform heat flux of (1000 W/m2). The use of Computational Fluid Dynamics (CFD) based on the finite volume method was implemented to solve the governing equations. The essential parameters on which the selection is based are the entropy generation (Sgen), the irreversibility of entropy generation number (Ns), the Bejan number (Be), and the Energy Performance Criterion (EPC). The analyses were performed on a group of five fluids two conventional (water and methanol), the rest are nanofluids (Al2O3-H2O, CuO-H2O, and Fe3O4 -H2O). Multiple parallel-computation phases are defined by user-defined functions (UDFs) for all fluids. It is found that nanofluids offer higher heat transfer ability than conventional fluids, and the behavior of the nanofluid (CuO-H2O) shows on average a minimum total entropy generation (minimum irreversibility) compared to other fluids (conventional and nanofluids), which reduces the energy degradation and improves the heat transfer. Therefore, it is chosen as the working fluid for the MFPSC.

Keywords

[1] João, P. C and B, Victor, M .(2016), CO2 emissions,non-renewable and renewable electricity production,economic growth, and international trade in Italy, Renewable and Sustainable Energy Reviews 55 (2016)142–155. http://dx.doi.org/10.1016/j.rser.2015.10.151
[2] Sadhishkumar, S and Balusamy, T.(2014), Performance  improvement  in  solar water heating  systems—A  review”,  Renewable  and  Sustainable  Energy Reviews, 37 (2014)191–198.
[3] Nurril, I. S. A. Hilmi, H. Shakir, M. N. and Tanweer, H.(2002), Thermal Performance  Enhancement in Flat Plate Solar Collector Solar Water Heater: A Review, Processes 2020, 8, 756.doi:10.3390/pr8070756.
[4] Evangelisti, L. Roberto, D. L. V and Asdrubal, F. (2019), Latest advances on solar thermal collectors: A comprehensive review, Renewable and Sustainable Energy Reviews 114(2019)109318.https://doi.org/10.1016/j.rser.2019.109318
[5] Krishna, M. P and Rajesh, C. (2017), A review on analysis and development of solar flat  plate collector, Renewable and Sustainable Energy Reviews.67(2017)641–650. http://dx.doi.org/10.1016/j.rser.2016.09.078
[6] Gianpiero, C. Ernani, F. Miglietta, P and Arturode Risi.(2016), Innovationin flat solar thermal collectors: A review of the last ten years experimental results, Renewable and Sustainable Energy Reviews 57(2016)1141–1159. http://dx.doi.org/10.1016/j.rser.2015.12.142
[7] Eric, C. Okonkwo, I. W. Ismail, W. Almanassra,Y. M. A. and Al‑Ansari.T.(2020), An updated review of nanofluids in various heat transfer devices, Journal of Thermal Analysis and Calorimetry. published online :15 june 2020. https://doi.org/10.1007/s10973-020-09760-2
[8] Ifeoluwa, W. Eric; C. O. Abbasoglu, S and Doga, K. (2020), Nanofluids in Solar  Thermal Collectors: Review and Limitations,  International Journal of Thermophysics (2020) 41:157. https://doi.org/10.1007/s10765-020-02737-1
[9] Bhrant, K. D and Arvind K.(2019), A review on nanofluids for solar collector application,  3rd International Conference on “Advances in Power Generation from Renewable Energy Sources”2019.https://hq.ssrn.com/conference=2019-APGRES
[10] Ritvik, D. Prateek, N. Neeraj, S and Desh, B. S. (2019), A brief review on solar flat plate collector by incorporating the effect of nanofluid,  Materials Today: Proceedings. https://doi.org/10.1016/j.matpr.2019.11.294
[11] Kadhim, A. H., Dong, L. Kolsic, L.Sanatana, K and Brundaban S.(2017) “A Review of Nano Fluid Role to Improve the Performance of the Heat pipe Solar Collectors ». Energy Procedia 109 ( 2017 ) 417 – 424.
[12] Mojtaba, N.(2016), Nano Fluid in Water as Base Fluid in Flat-Plate Solar Collectors with an Emphasis on Heat Transfe, .Indian Journal of Science and Technology, Vol 9(31), August 2016.DOI:10.17485/ijst/2016/v9i31/90341
[13] Lazarus, G. Raja, B. Mohan Lal, D and Wongwises, S.(2009), Enhancement of heat transfer using nanofluids—An overview, Renewable and Sustainable Energy Reviews 14 (2010) 629–641.doi:10.1016/j.rser.2009.10.004.
[14] Mahfoud, B. and Bendjaghlouli, A. (2018), Natural convection of a nanofluid in a conical container, Journal of Thermal Engineering (1), 1713–1723.
[15] Elumalai, V and Ramalingam, S.(2020), A review on recent development of thermal performance enhancement methods of flat plate solar water heater,  Solar Energy 206 (2020) 935–961. https://doi.org/10.1016/j.solener.2020.06.059
[16] Nawaf, H. Waqar, K. Surafel, T.(2018), Optimization of Microchannel Heat Sinks Using Prey-Predator Algorithm and Artificial Neural Networks, Machines 2018, 6, 26.doi:10.3390/machines6020026
[17] Mohamed, M. A. (2015), A review of entropygeneration in microchannels, Advances in Mechanical Engineering. 2015, Vol. 7(12) 1–32. _ The Author(s) 2015. DOI: 10.1177/1687814015590297.
[18] Bejan, A. (1982), Entropy generation through heat and fluid flow,  (John Wiley & Sons,  Inc., New York).
[19]  Duong,V. T (2015),,Minichannel tube solar thermal collectors for low to medium temperature application, Master of Science thesis, Mechanical Engineering Dept.,University of California, Merced. https://escholarship.org/uc/item/21r366cn. Publication Date 2015-01-01
[20] Taoufik, B. Dhaou, M. H and Abdelmajid, J. (2014), Theoretical and experimental investigation of plate screen mesh heat pipe solar collector , Energy Conversion and Management 87 (2014) 428–438 . http://dx.doi.org/10.1016/j. enconman.2014.07.041
[21] João, P.R. and Jean, A. G.(2009), Nanofluids pour les applications thermiques,  Technique de l’ingénieur : nm5115.
[22] Golkonda, V. A and Srinivasa, K.R. (2019), CFD Analysis of a Double Pipe Heat Exchanger by using Fluid Based Nanomaterials, International Journal of Trend in Scientific Research and Development (IJTSRD), Volume: 3 | Issue: 2 | Jan-Feb 2019. www.ijtsrd.com e-ISSN: 2456 - 6470
[23] Arani1, A.A.A S. Khandan, S.S. Ghadimi, B and Sheikhzadeh, G.A.(2014), Numerical  investigation of nanofluids swirail floow in circular tube equipped with twisted tape, International Conference on Nuclear and Renewable Energy Resources, Antalya, TURKEY, 26-29 Oct. 2014.
[24] Sai, K. H. Van, T.D and Gerardo, D. (2020), Two-phase flow performance prediction for minichannel solar Collectors, Heat and Mass Transfer (2020) 56:109–120.https://doi.org/10.1007/s00231-019-02686-y
[25] Adrian, B and Allan, D. K. [2003],  Heat transfer handbook,  Hoboken, John Wiley &Sons, Inc.,New Jersey.
[26] Frank M. W.(2009) Fluid Mechanics . (Mc Graw-Hill. New York). ISBN 978-0-07-352934-9
[27] Greg, F. N. and José A. C. (2008), Entropy-Based Design and Analysis of Fluids  Engineering Systems, (CRC Press. Taylor & Francis Group Boca Raton London New York).ISBN: 978‑0‑8493‑7262‑9
[28] Adrian Bejan (2016), Advanced Engineering Thermodynamics (John Wiley & Sons, Inc. New York). ISBN: 9781119281030
[29] Adrian Bejan. (2013), Convection heat transfer, (John Wiley & Sons, Inc., New York)
[30]  Paoletti, S. Rispoli, F and Sciubba, E (1989), Calculation of exergetic losses in compact  heat exchanger passages, ASME AES, Vol. 10, No. 2, 1989, pp. 21–29.
[31] Benedetti, P and Sciubba,E (1993), Numerical calculation of the local rate of entropy  generation in the flowaround a heated finned tube, ASME HTD,Vol. 266, 1993, pp. 81–91.
[32] Jaeseon, L and Mudawar, I. (2006), Assessment of the effectiveness of nanofluids for  single-phase and two-phase heat transfer in micro-channels, Int. J. Heat Mass Transf. 50 (2007) 452–463. DOI:10.1016/j.ijheatmasstransfer. 2006.08.001.
[33] Luchao, S and Guangming, F. (2018), Numerical Simulation of Flow and Heat Transfer Characteristics of CuO-Water Nanofluids in a Flat Tube.  Frontiers in Energy Research, Article 57 Volume 6, June 2018, doi: 10.3389/fenrg.2018.00057
[34] Saidu, B. A. Sidik, N. A. C and Siti, N. A. Y.(2020), Measurement of Fluid Flow and  HeatTransfer Performance in Rectangular Microchannel using Pure Water and Fe3O4-H2O Nanofluid.  Journal of Advanced Research in Applied Mechanics 68, Issue 1 (2020)9-21.https://doi.org/10.37934/aram. 68.1.921
[35] Mohammad, Y. Rozli, A.S.M. Kamaruzzaman, Z S and Abeer, A. S. (2020), Thermal and Hydraulic Performance of CuO/Water Nanofluids: A Review. Micromachines 2020, 11, 416.doi:10.3390/mi11040416
[36] Avinash.K.R, Manishankar .D, Niraimozhi. P, Yogesh.R.J. K,Thiruvenkata. R K (2018). Study of Heat Transfer Characteristics of Al2O3 and CuO Nanofluids in the Tube of a Radiator. IJRAR November2018, Volume 5, Issue 4 www.ijrar.org (E-ISSN 2348-1269, P- ISSN 2349-5138).
[37] Belhadj.A, Bouchenafa.R , Saim.R (2018). Numerical investigation of forced convection of nanofluid in microchannels heat sinks. Journal of Thermal Engineering, Vol. 4, No. 5, pp. 2263-2273 July, 2018
[38] Ghandarali. S, Alireza .A, Hamidreza.E, Mahmoud.A. (2016) Analytical study of parameters affecting entropy generation of nanofluid turbulent flow in channel and micro-channel.  Thermal Science · DOI: 10.2298/TSCI151112070S
 [39] Krishna. K.P.V Varma, Kishore .P.S, Durga Prasad.P.V.(2017) . Enhancement of Heat Transfer Using Fe3O4 / Water Nanofluid with Varying Cut-Radius Twisted Tape Inserts. International Journal of Applied Engineering Research  DOI: 10.37622/IJAER/12.18.2017.7088-7095
[40] Shah, R. K., and London, A. L.(1998), Laminar Flow Forced Convection in Ducts (Advances in Heat Transfer)”, Published in 1998 byAcademic Press, New York.
[42]  Patankar, S., Numerical Heat Transfer and Fluid Flow, McGraw-Hill, New-York,1980.
Volume 52, Issue 4
December 2021
Pages 664-681
  • Receive Date: 09 November 2021
  • Revise Date: 07 December 2021
  • Accept Date: 10 December 2021
  • First Publish Date: 10 December 2021