Open Access

ARTICLE

Plus Energy Buildings: A Numerical Case Study

by Abed Hawila^1,2,3, Hala Alsalloum⁴, Abdelatif Merabtine^1,*, Farouk Fardoun^4,5, 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:

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

Fluid Dynamics & Materials Processing 2023, 19(1), 117-134. https://doi.org/10.32604/fdmp.2022.022151

Received 23 February 2022; Accepted 30 March 2022; Issue published 02 August 2022

Abstract

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.

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Keywords

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