PhD Student FLEXIble latent heat thermal energy STOrage Solutions for Waste heat recovery, enhanced Energy efficiency, and industry decarbonization

Il y a 2 mois

Douai, France Institut Mines-Télécom Temps plein
Research center : Energy and Environmental Engineering Research Center

Specialty: Fluid Mechanics, Energetics, Process Engineering

Center Director: Nadine LOCOGE

Supervisors: Jules Voguelin SIMO TALA, Daniel BOUGEARD

Nature of the position: PhD thesis project in Mechanical Engineering and Energetics

Location : IMT Nord Europe, campus Lahure, 764 boulevard, 59500 Douai

CONTEXT :

IMT Nord Europe is one of the largest engineering schools north of Paris. Its goal is to train the engineers of tomorrow, mastering both digital technologies and industrial know-how. Ideally located at the crossroads of Europe, 1 hour from Paris, 30 minutes from Brussels, and 1.5 hours from London, IMT Nord Europe aims to become a major player in the great industrial, digital, and environmental transformations of the 21st century by combining, both in its teachings and research, engineering sciences and digital technologies.

As a school under the supervision of the Ministry of Economy and Finance and a school of the Institut Mines Télécom, IMT Nord Europe has three main missions: to train responsible engineers capable of solving the great challenges of the 21st century; to conduct research leading to high value-added innovations; and to support the development of regions, notably by facilitating innovation and the creation of businesses.

Located on two main teaching and research sites, in Lille and Douai, IMT Nord Europe relies on more than 20,000 square meters of laboratory space to develop high-level teaching and excellence in research in the following fields:
  • Digital Science and Technology
  • Processes for Industry and Services
  • Energy and Environment
  • Advanced Materials and Processes applied to polymers, composites, and civil engineering.

This research project developed by IMT Nord Europe is carried out with the financial support of the National Research Agency as part of the ANR RECLASSIF 2024 project established by the national network of engineering schools of the Institut Mines Télécom (IMT) and the Ecole Nationale des Arts et Métiers (ENSAM).

MISSIONS :

Project description :

According to ADEME, waste heat emissions in the industrial sector represent an estimated power of 51 TWh, which is 16% of fuel consumption in industry, released as waste heat in France. The analysis of the distribution of this lost power shows that 10% is concentrated in high temperatures (>400°C), 37% in medium temperatures (200°C to 400°C), while 53% is concentrated in low temperatures (100°C to 200°C). Due to the limited number of high-temperature emission sites in France, several studies have been conducted over the past decades on the recovery and valorization of these emissions, resulting in the development of mature high-temperature storage systems, very often in the form of sensible heat storage in refractory materials. Medium and low-temperature thermal emissions are often dispersed throughout the national territory, with a significant deposit in the Hauts-de-France region for low temperatures. This dispersion hinders the development of breakthrough technologies for the recovery and valorization of these emissions, unlike high-temperature emissions.

Goals :

This project aims to develop flexible latent thermal storage solutions for the recovery of waste heat, targeting the improvement of energy efficiency in various industrial energy systems. More specifically, the project's objective is to reduce or even replace the use of fossil energy sources in different applications such as heating and hot water production in the residential sector (domestic hot water, individual and collective housing, hospitals, nursing homes, etc.) and/or industrial sector, agri-food industry (greenhouse cultivation), district heating networks, and endothermic energy processes, with waste energy captured and stored in optimized latent thermal storage units, offering great flexibility of use depending on the application, with the ultimate goal of contributing to the development of a high-performing, virtuous, and efficient industry of the future.

Given their high volumetric energy density, one of the avenues for recovering these thermal emissions is to develop latent thermal storage modules using phase change materials (PCMs), prioritizing eco-efficient materials. The innovation targeted in this project is the use of passive techniques to enhance heat transfer both within the PCM and within the heat transfer fluid to make these modules compact and optimized, thereby facilitating the phases of thermal energy charging and discharging for a range of target applications.

Activities :

The complexity of the phenomena involved in the storage units to be developed as part of this project requires the development of numerical prediction models (detailed CFD) for the melting-solidification processes, including convective heat exchanges which can be natural or mixed. These models subsequently need fine validation on experimental test benches at both local and global levels. Therefore, a dual numerical and experimental approach is concurrently employed in this project. The storage modules developed involve various coupled physical phenomena (single-phase conduction and convection, conduction and convection with phase change), and a detailed modeling of these heat transfer modes will be performed using CFD-type numerical tools to accurately describe the transfer mechanisms at the local level.

Thermo-fluidic experiments (local and global) will be developed to validate the various numerical models and characterize the performance of the selected phase change materials (PCM) (thermo-fluidic visualizations, thermometry, thermo-physical characterization of materials, thermal cycling tests). Emphasis will be placed on the use of advanced quantitative techniques such as particle image velocimetry (PIV) on both the heat transfer fluid side and the PCM side to access velocity fields (both in natural convection within the PCM and forced convection in the heat transfer fluid), enabling the qualification of the developed numerical models.

The numerical tools implemented in this project, coupled with these experiments, will allow for the prototyping and development of flexible and durable waste heat recovery modules in the temperature range of 70°C to 180°C.

APPLICANT PROFILE :

The position is suitable for a candidate holding or preparing for a Master's degree / engineering degree and possessing skills in one or more of the following areas: Fluid Mechanics / Energetics / Thermodynamics.

The main skills required for the proposed research project are as follows:
  • Numerical modeling and thermo-fluidic simulation
  • Thermo-fluidic experimentation through local and global approaches
  • Scientific rigor and strong writing skills
  • Proficiency in English for dissemination of work (publications, scientific communications)

Knowledge of one or more of the following software tools would be appreciated: Star CCM+, ANSYS-FLUENT, and equivalents.

CONDITIONS :

The position is available starting from October 1st, 2024, for a duration of 3 years (fixed-term contract).

INFORMATION AND APPLICATION SUBMISSION DETAILS :

For any inquiries regarding the position, please contact:
  • Dr. Jules Voguelin SIMO TALA, Researcher at CERI EE, Douai, France :

jules-voguelin.simo.tala@imt-nord-europe.fr
  • Prof. Daniel BOUGEARD, Researcher at CERI EE, Douai, France :

daniel.bougeard@imt-nord-europe.fr

For any administrative inquiries, please contact the Human Resources Department:

jobs@imt-nord-europe.fr

To apply for the position, please submit a detailed CV, two letters of recommendation, and a motivation letter.

Application deadline : August 7, 2024.

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