Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Increasing Efficiency in Tertiary Buildings through PoE LVDC Nanogrid in the island of La Réunion

Olivia Graillet
* ORCID logo ,
Denis Genon-Catalot
,
Pierre-Olivier Lucas de Peslouan
,
Flavien Bernard
,
Frédéric Alicalapa
,
Laurent Lemaitre
,
Jean-Pierre Chabriat
Version 1 : Received: 1 February 2024 / Approved: 2 February 2024 / Online: 2 February 2024 (07:23:51 CET)

A peer-reviewed article of this Preprint also exists.

Graillet, O.; Genon-Catalot, D.; Lucas de Peslouan, P.-O.; Bernard, F.; Alicalapa, F.; Lemaitre, L.; Chabriat, J.-P. Optimizing Energy Consumption: A Case Study of LVDC Nanogrid Implementation in Tertiary Buildings on La Réunion Island. Energies 2024, 17, 1247. Graillet, O.; Genon-Catalot, D.; Lucas de Peslouan, P.-O.; Bernard, F.; Alicalapa, F.; Lemaitre, L.; Chabriat, J.-P. Optimizing Energy Consumption: A Case Study of LVDC Nanogrid Implementation in Tertiary Buildings on La Réunion Island. Energies 2024, 17, 1247.

Abstract

In the context of the French tertiary decree, it is crucial to reduce the energy consumption of buildings by first addressing the design of the electrical architecture. Implementing Direct Current (DC) nanogrids in buildings could offers a promising advantage for energy efficiency, significantly impacting overall energy consumption and sustainability goals. For an insulated area with a subtropical climate, such as La Réunion island, DC nanogrids could also facilitate the insertion of local renewable energy sources, especially solar energy. This article presents the deployment and efficiency evaluation of an end-to-end Low Voltage Direct Current (LVDC) nanogrid, from conception to real-world installation within a company. The nanogrid consists of a photovoltaic power plant, a Lithium-Iron-Phosphate (LFP) battery, and DC end-use equipment such as LED lighting and DC fans for two individual offices. An innovation is provided for the power supply and energy management of terminal equipment using the Power Over Ethernet (PoE) standard IEEE 802.3bt. The efficiency of the nanogrid is measured to be 40% higher than the efficiency of an installation powered by PV and distributed at 230 VAC. These results are obtained under certain deployment conditions, which are discussed in this article, in order to enhance the energy efficiency of buildings by using 48VDC. The nanogrid hardware and software infrastructure, the methodology employed for efficiency quantification and the measurement results are described in the paper.

Keywords

lvdc nanogrid; energy efficiency; power over ethernet; solar energy; line losses; building

Subject

Engineering, Energy and Fuel Technology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Download PDF

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0
Metrics 0
Get PDF Cite Share 0
Bookmark BibSonomy Mendeley Reddit Delicious
×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.