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PhD student - Energy systems (cold and electricity cogeneration, storage)

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Français - Anglais

Date Limite Candidature : lundi 28 juin 2021

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General information

Reference : UPR8521-MAXPER-003
Workplace : PERPIGNAN
Date of publication : Monday, June 7, 2021
Scientific Responsible name : Nathalie Mazet
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 September 2021
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly

Description of the thesis topic

Title of the thesis: Energy analysis of multi-functional processes (cogeneration, cooling, electricity and storage): Numerical and experimental approaches

This thesis is part of the research project ThermHYVal, granted to the laboratory PROMES, funded by the ANR, and which started in April 2021. This project addresses several important and topical energy issues: the valorization of low temperature heat (such as industrial thermal waste, low concentration solar energy...), the problem of storage to manage the fluctuations of both energy sources and demands, and the increasing demand for electricity and cooling.
To address these issues, the laboratory has defined an innovative process integrating both a storage function and also cogeneration of cold and electricity.
This process combines a sorption process (absorption or thermochemical, which ensures the functions of storage and cold production) and a engine cycle (similar to an ORC, for the production of electricity). The originality of such a process called 'hybrid' is not in the components themselves, which are relatively well known, but in the architecture of the global process associating them. Several architectures have been identified, favoring one or another of the targeted functionalities (storage, cooling, electricity). The scientific challenges lie in the understanding and control of the interactions between the components of these hybrid processes, the adequacy of their operating modes, and the optimization of overall performance.
Currently, the laboratory has defined several interesting architectures, analyzed their thermodynamic performances in steady state, and developed a first model (and the corresponding code) to analyze the dynamic behavior of this system during storage and production phases (cold and/or electricity). Moreover, a prototype of hybrid system will be operational soon.

Work program
To deepen this theme, it is now essential:
1. to carry out experimental campaigns on the prototype,
2. to analyze the global performances of the prototype,
3. to validate and/or improve the existing dynamic model from these experiments,
4. to use the model thus validated to analyze the main irreversibilities and to optimize the performances of these hybrid processes, both in terms of sizing, operating conditions, and control of the global cycle,
5. to analyze the relevance of these processes for different application cases (in collaboration with the LGC-Toulouse, a specialist in this field and a partner in this project).

This research work is both experimental and numerical. It is fully integrated in the theme "multi-generation and storage" of the PROMES laboratory. Moreover, it will be carried out within the framework of the ANR-ThermHyVal collaborative project with the support of the members of the PROMES and LGC laboratories involved in this project.

Candidate profile: Level Master or Engineer degree (BAC+5). The candidate will have a solid background in energy (thermodynamics, transfers) and ideally knowledge in process engineering. An interest in both numerical and experimental aspects is essential. Knowledge of the Python programming language will be appreciated.

Work Context

PROMES is a Research Unit of CNRS (UPR 8521) belonging to the Institute for Engineering and Systems Sciences ( (INSIS) under contract with the University of Perpignan (UPVD). The laboratory is located in three sites: Odeillo-Font Romeu (1 MW CNRS Solar furnace), Targasonne (Themis site, 5 MW central receiver solar facility, a site of "Pyrénées Orientales" Council) and Perpignan, Tecnosud.
The laboratory staff is composed of 150 persons from CNRS and UPVD working together on a common subject, solar energy and its use as a source of energy and high temperatures.
Research at PROMES is organized in 3 major unifying Themes:
1 - Material for Energy and Space
2 – Next Generation of Solar Power Plants
3 - Storage and Solar Chemistry

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