Open Access iconOpen Access


Plus Energy Buildings: A Numerical Case Study

Abed Hawila1,2,3, Hala Alsalloum4, Abdelatif Merabtine1,*, Farouk Fardoun4,5, Rachid Bennacer6

1 EPF School of Engineering, Rosieres-Prés-Troyes, France
2 Faculty of Engineering, Lebanese University, Hadath, Lebanon
3 Centre Scientifique et Technique du Batiment, Health and Comfort Department, Saint-Martin-D’Hères, France
4 Doctoral School of Science and Technologies, Lebanese University, Hadath, Lebanon
5 Faculty of Technology, Department GIM, Lebanese University, Saida, Lebanon
6 LMPS, Paris Saclay University, Paris, France

* Corresponding Author: Abdelatif Merabtine. Email: email

(This article belongs to the Special Issue: Materials and Energy an Updated Image for 2021)

Fluid Dynamics & Materials Processing 2023, 19(1), 117-134.


The feasibility of Plus Energy Building for a sample relevant case is investigated. After a literature review aimed to identify key aspects of this type of buildings, a preliminary evaluation of the thermal performance of a building constructed using conventional material is presented together with a parametric analysis of the impact of typical influential parameters. Solar domestic hot water (SDHW) and photovoltaic systems (PV) are considered in the study. Numerical simulations indicate that for the examined sample case (Beirut in Lebanon) the total annual energy need of conventional building is 87.1 kWh/y.m2 . About 49% of energy savings can be achieved by improving the building envelope and installing energy efficient technologies. Moreover, about 90% of energy savings in domestic hot water production can be achieved by installing a SDHW system composed of two solar collectors connected in series. Finally, the addition of a grid connected PV array system can significantly mitigate the energy needs of the building leading to an annual excess of energy.


Cite This Article

APA Style
Hawila, A., Alsalloum, H., Merabtine, A., Fardoun, F., Bennacer, R. (2023). Plus energy buildings: A numerical case study. Fluid Dynamics & Materials Processing, 19(1), 117-134.
Vancouver Style
Hawila A, Alsalloum H, Merabtine A, Fardoun F, Bennacer R. Plus energy buildings: A numerical case study. Fluid Dyn Mater Proc. 2023;19(1):117-134
IEEE Style
A. Hawila, H. Alsalloum, A. Merabtine, F. Fardoun, and R. Bennacer "Plus Energy Buildings: A Numerical Case Study," Fluid Dyn. Mater. Proc., vol. 19, no. 1, pp. 117-134. 2023.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1463


  • 610


  • 0


Share Link