THERMAL SCIENCE

International Scientific Journal

Thermal Science - Online First

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Experimental investigation of solar compound parabolic collector using Al2O3/H2O nanofluid in a subtropical climate

ABSTRACT
Different solar concentrator technologies are used for low-medium range temperature applications. In this paper, a non-tracking compound parabolic collector with a nanofluid is experimentally analyzed under real climate conditions of a typical sub-tropical climate Taxila, Pakistan. The collector used for the experimentation has concentration ratio of 4.17, collector area of 0.828 m2 and half acceptance angle of 24°. The heat transfer fluid used for the study is water based nanofluid with particles of Al2O3. The investigation is carried out at three different volumetric concentrations (0.025%, 0.05%,0.075%) of nanofluids at flowrates of 0.01 kg/s, 0.02 kg/s, 0.05 kg/s and 0.07 kg/s are compared with base fluid (water). Comparison of system thermal efficiency, solar heat gain, and temperature difference is presented for different selected days in real climate conditions during months of March to May. It is observed that performance of the compound parabolic collector is improved by 8%, 11%, 14% and 19%, respectively at considered flow rates compared to water.
KEYWORDS
PAPER SUBMITTED: 2019-12-07
PAPER REVISED: 2020-05-07
PAPER ACCEPTED: 2020-06-18
PUBLISHED ONLINE: 2020-07-11
DOI REFERENCE: https://doi.org/10.2298/TSCI191207201A
REFERENCES
  1. Ghafoor, A., et al., Current Status and Overview of Renewable Energy Potential in Pakistan for Continuous Energy Sustainability, Renewable and Sustainable Energy Reviews, 60 (2016), pp. 1332-1342
  2. Ali, B., et al., Pakistan Energy Yearbook, Hydrocarbon Development Institute of Pakistan, Islamabad, Pakistan, 2014
  3. Kim, Y. S., et al., Efficient Stationary Solar Thermal Collector Systems Operating at a Medium-Temperature Range, Applied Energy, 111 (2013), pp. 1071-1079
  4. Bellos, E., Tzivanidis, C., A Review of Concentrating Solar Thermal Collectors With and Without Nanofluids, Journal of Thermal Anaysis and.Calorimetry, 135 (2019), pp. 763-786
  5. Hachicha, A. A., et al., Heat Transfer Analysis and Numerical Simulation of a Parabolic Trough Solar Collector, Appied. Energy, 111 (2013), pp. 581-592
  6. ***, Energy Statistics: Electrical Information 2018, www.iea.org
  7. Gunerhan, H., Hepbasli, A., Exergetic Modeling and Performance Evaluation of Solar Water Heating Systems for Building Applications, Energy and Buildings, 39 (2007), 5, pp. 509-516
  8. Li, Q., et al., Design and Analysis of a Medium-Temperature, Concentrated Solar Thermal Collector for Air-Conditioning Applications, Applied Energy, 190 (2017), pp. 1159-1173
  9. Ayompe, L. M., et al., Validated TRNSYS Model for Forced Circulation Solar Water Heating Systems With Flat Plate and Heat Pipe Evacuated Tube Collectors, Applied Thermal Engineering, 31 (2011), pp. 1536-1542
  10. Snail, K. A., et al., A Stationary Evacuated Collector With Integrated Concentrator, Solar Energy, 33 (1984), 5, pp. 441-449
  11. Kim, Y., et al., An Evaluation on Thermal Performance of CPC Solar Collector, International Communications in Heat and Mass Transfer, 35 (2008), 4, pp. 446-457
  12. K. Sadaghiyani, O., et al., Two New Designs of Parabolic Solar Collectors, Thermal Science, 18 (2014), Suppl. 2, pp. S323-S334
  13. Diakoulaki, D., et al., Cost Benefit Analysis for Solar Water Heating Systems, Energy Conversion and Management, 42 (2001), 14, pp. 1727-1739
  14. Bellos, E., et al., Design , Simulation and Optimization of a Compound Parabolic Collector, Sustainable Energy Technologies and Assessments, 16 (2016), pp.53-63
  15. Kuo, C.-W., et al., The Design and Optical Analysis of Compound Parabolic Collector, Procedia Engineering, 79 (2014), pp. 258-262
  16. Freegah, B., et al., Computational Fluid Dynamics based Analysis of a Closed Thermo-Siphon Hot Water Solar System, Proceedings, 26th International Congress of Condition Monitoring and Diagnostic Engineering Management, Helsinki, Finland, 2013, pp. 11-13
  17. Selvakumar, P., Somasundaram, Dr. P., Effect of Inclination Angle on Temperature Characteristics of Water in-Glass Evacuated Tubes of Domestic Solar Water Heater, International Journal of Engineering and Innovative Technology, 1 (2012), 4, pp. 78-81
  18. Kakaç, S., Pramuanjaroenkij, A., Review of Convective Heat Transfer Enhancement With Nanofluids, International Journal of Heat and Mass Transfer, 52 (2009), 13-14, pp. 3187-3196
  19. Amrollahi, A., et al., Conduction Heat Transfer Characteristics and Dispersion Behaviour of Carbon Nanofluids as a Function of Different Parameters, Journal of Experimental Nanoscience, 4 (2009), 4, pp. 347-363
  20. Murshed, S.M.S., et al., Enhanced Thermal Conductivity of TiO2-Water based Nanofluids, Internationaal Journal of Thermal Sciences, 44 (2005), 4, pp. 367-373
  21. Park, E. J., Park, H. W., Synthesis and Optimization of Metallic Nanofluids using Electrical Explosion of Wires in Liquids, Proceedings, School of Mechanical and Advanced Materials Engineering , Ulsan National Institute of Science and Technology, Ulsan, South Korea, 2 (2011), pp. 535-538
  22. Labib, M. N., et al., Numerical Investigation on Effect of Base Fluids and Hybrid Nanofluid in Forced Convective Heat Transfer, International Journal of Thermal Sciences, 71 (2013), pp. 163-171
  23. Bahrami, M., et al., An Experimental Study on Rheological Behavior of Hybrid Nanofluids Made of Iron and Copper Oxide in a Binary Mixture of Water and Ethylene Glycol, Experimental Thermal and Fluid Sciences, 79 (2016), pp. 231-237
  24. Duangthongsuk, W., Wongwises, S., Heat Transfer Enhancement and Pressure Drop Characteristics of TiO2-Water Nanofluid in a Double-Tube Counter Flow Heat Exchanger, International Journal of Heat and Mass Transfer, 52 (2009), 7-8, pp. 2059-2067
  25. Mostafa, M., et al., Free Convection of a Nanofluid in a Square Cavity with a Heat Source on the Bottom Wall and Partially Cooled from Sides, Thermal Science, 18 (2014), Suppl. 2, pp. 283-300
  26. Cho, C.-C., et al., Enhancement of Natural Convection Heat Transfer in a U-Shaped Cavity Filled with Al2O3-Water Nanofluid, Thermal Science, 16 (2012), 5, pp. 1317-1323
  27. Rehan, M. A., et al., Experimental Performance Analysis of Low Concentration Ratio Solar Parabolic Trough Collectors with Nanofluids in Winter Conditions, Renewable Energy, 118 (2018), pp. 742-751
  28. Duffie, J. A., Beckman, W. A., Solar Engineering of Thermal Processes, John Wiley and Sons Inc., Hoboken, New Jersey, 2013
  29. Chaudhary, G. Q., et al., Small-Sized Parabolic Trough Collector System for Solar Dehumidification Application: Design, Development, and Potential Assessment, International Journal of Photoenergy, 2018 (2018), 4, pp. 1-12
  30. Patel, D. S, Patel, D. K, Thermal Analysis of Compound Parabolic Concentrator, International Journal of Mechanical and Production Engineering Research and Development, 5 (2015), 6, pp. 117-126