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Reference : UPR8521-GILFLA-009
Workplace : FONT ROMEU ODEILLO VIA
Date of publication : Friday, November 08, 2019
Scientific Responsible name : Françoise Bataille
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 January 2020
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly
Description of the thesis topic
The PhD thesis is part of a large research program about fluidized bed tubular solar receivers started since 2011 at PROMES Laboratory.
It will be organized in three main parts as follows: (1) study of upward solid-gas fluidized bed flows using a cold mockup; (2) development of a solar experimental setup for measuring tube wall-to-fluidized particles heat transfer; (3) modeling of a commercial scale solar receiver able to achieve a 85% and more thermal efficiency.
(1) Study of upward solid-gas fluidized bed flows
A cold mockup is available at PROMES lab, it enables visualizing the solid-gas flow and measuring the total and local pressure drops. Mean values are related to particle volume fraction and fluctuations are linked to the flow structure. The data will be used to study the flow structure as a function of the tube height (3 m). Measurements will be completed with numerical simulations using the Neptune-CFD code.
(2) Development of a solar experimental setup for measuring tube wall-to-fluidized particles heat transfer
This part aims at completing previous data but with a better-equipped experimental facility.
The main objective is to correlate the thermal measurements with the variation of the flow structure with temperature. The analysis of experimental results will also take advantage of numerical simulation.
(3) Modeling of a commercial scale solar receiver
First estimate indicates that a 50 MWth solar receiver is realistic with this technology. On this basis, we aim at developing a solar receiver model with variable geometry that enables to reach 85% and more thermal efficiency for an operation temperature of about 900°C. The development will use an in-house code.
The PROMES laboratory is a CNRS lab located in two places Font Romeu and Perpignan. The research is carried out in Font Romeu, the Solar furnace site. About 150 persons contribute to the researches of the Laboratory including 50 PhD students and post-doctorates. PROMES develops research on solar energy conversion, in particular concentrated solar energy. In this field, the main research topics are thermodynamic conversion (CSP), solar thermochemistry and high temperature materials. The laboratory is the French research infrastructure on concentrating solar technology. This PhD thesis will contribute to a large program related to the development of innovative high temperature solar receivers based on the fluidized bed technology.
The PhD thesis co-funded by the SOLSTICE Labex is linked to the H2020 project “Next-CSP” and to an international research project on particle solar receivers managed by Sandia National Laboratories (USA). Françoise Bataille (Professor), Samuel Mer (Assistant Professor) and Gilles Flamant (Emeritus Research Director) will supervise the PhD student.
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