Cover
Vol. 22 No. 2 (2022)

Published: December 31, 2022

Pages: 33-40

Original Article

Effect of Phase Change Material and Roof Shading on Cooling Load of Residential Unit in Basrah

Haider Hakeem Naser 1 Salman Hashim Hammadi 1
1 Department of Mechanical Engineering, College of Engineering, University of Basrah, Basrah, Iraq
History
  • Received: March 24, 2022
  • Revised: May 3, 2022
  • Accepted: May 15, 2022
  • Available Online: December 24, 2022
DOI

https://doi.org/10.33971/bjes.22.2.6

Abstract

In several countries, residential buildings are responsible for high energy consumption. The majority of energy is consumed on air conditioning to ensure maximum indoor comfort. In Iraq, the demand for electricity increases significantly, especially during the summer for cooling purposes. In this paper, two technologies are proposed for buildings to reduce the cooling load. These approaches included the use of phase- changing materials (PCM) in different locations in the walls and roof, in addition to roof shading by galvanized iron. The effects of these proposals were simulated in the latest software tool (designbuilder) and compared with the standard building model. The results were clear when PCM was installed on the outer surface of the wall and roof, which achieved the highest reduction in the cooling load of about 18 %. While the roof shading method using corrugated galvanized iron proved its effectiveness by decreasing the cooling load to 5 % compared to the standard case.

Keywords

References

  1. C. K. Halford and R. F. Boehm, “Modeling of phase change material peak load shifting”, Energy and Buildings, Vol. 39, Issue 3, pp. 298-305, 2007.
  2. M. K. Hussein, “Improvements of building envelope using passive cooling techniques to reduce the cooling load in hot-dry regions”, Heat Transfer, Vol. 48, Issue 8, pp. 38313842, 2019. https://doi.org/10.1002/htj.21570
  3. K. Muruganantham, “Application of phase change material in buildings field data vs EnergyPlus simulation”, M.Sc. Thesis, Arizona State University, 2010.
  4. M. B. Al-Hadithi, “Use of phase change material in residential walls to reduce cooling load”, Anbar Journal for Engineering Science, Vol. 4, No. 1, pp. 72-74, 2011.
  5. A. A. Madhumathi and B. M. C. Sundarraja, “Experimental study of passive cooling of building façade using phase change materials to increase thermal comfort in buildings in hot humid areas”, International Journal of Energy and Environment, Vol. 3, Issue 5, pp. 739-748, 2012.
  6. M. K. Nematchoua, J. C. V. Noelson, I. Saadi, H. Kenfack, A. F. R. Andrianaharinjaka, D. F. Ngoumdoum, J. B. Sela, and S. Reiter, “Application of phase change materials, thermal insulation, and external shading for thermal comfort improvement and cooling energy demand reduction in an office building under different coastal tropical climates”, Soler Energy, Vol. 207, pp. 458-470, 2020. https://doi.org/10.1016/j.solener.2020.06.110
  7. A. H. N. Al-mudhafar, M. T. Hamzah, and A. L. Tarish, “Potential of integrating PCMs in residential building envelope to reduce cooling energy consumption”, Case Studies in Thermal Engineering, Vol. 27, 2021.
  8. S. D. Zwanzig, “Numerical simulation of phase change material composite wallboard in a multi-layered building envelope”, M.Sc. Thesis, Department Mechanical Engineering, University of Louisville, 2012.
  9. S. M. da Silva, and M. Almeida, “Using PCM to improve building’s thermal performance”, 2nd international conference on sustainable energy storage, June 19-21, Trinity College, Dublin, Ireland, pp. 181-186, 2013. https://core.ac.uk/download/55625078.pdf
  10. H. J. Akeiber, S. E. Hosseini, M. A. Wahid, H. M. Hussen, and A. T. Mohammad, “Phase change materialsassisted heat flux reduction: Experiment and numerical analysis”, Energies, Vol. 9, Issue 1, 2016.
  11. X. Wang, Y. Zhang, W. Xiao, R. Zeng, Q. Zhang, and H. Di, “Review of Thermal Performance of Phase Change Energy Storage Building Envelope”, Chinese Science Bulletin, Vol. 54, Issue 6, pp. 920-928, 2009.
  12. A. H. Mohammed, “A theoretical and practical investigation into the use of an underground heat exchanger and the solar chimney to cool buildings in the city of Basra”, Ph.D. Thesis, Department of Mechanical Engineering, College of Engineering, University of Basrah, 2016.
  13. R. H. Hashim, S. H. Hammdi, A. A. Eidan, “Evaporative Cooling: A Review of its Types and Modeling”, Basrah Journal for Engineering Sciences, Vol. 22, Issue 1, pp. 3647, 2022. http://doi.org/10.33971/bjes.22.1.5
  14. The Reference to EnergyPlus Calculations, No. c.2015.