Geothermy

Durée

18h Th, 15h Pr, 40h Proj., 1j T. t.

Nombre de crédits

Enseignant

Alain Dassargues, Bertrand François

Langue(s) de l'unité d'enseignement

Langue anglaise

Organisation et évaluation

Enseignement au deuxième quadrimestre

Horaire

Horaire en ligne

Unités d'enseignement prérequises et corequises

Les unités prérequises ou corequises sont présentées au sein de chaque programme

Contenus de l'unité d'enseignement

Introduction (6h)

• Heat transfer in saturated porous media (equations and main parameters) (A. Dassargues) 2h
• Building energy needs (S. Attia) 2h
• Heat pumps, performance coefficients, ... (P. Dewaleffe) 2h

• Introduction
• Different systems including ATES (Aquifer Thermal Energy Storage)for shallow and deep open systems
• Possible impacts on the gw resources (quantity, quality, cumulative aspects), permitting aspects
• Hydrochemical aspects
• Methodological aspects before and for an efficient design

• Introduction
• Characterization of the geothermal potential: empirical relations, thermal response test (TRT)
• Design from different national recommendations
• Modelling of temperature evolution in the ground
• Seasonal heat storage
• Long-term monitoring
• Economic and environmental considerations

• Invited seminar

Acquis d'apprentissage (objectifs d'apprentissage) de l'unité d'enseignement

At the end of the course, the student will have a strong basic skill in geothermy. He will be able to:
- be familiar with the main characteristics of geothermal systems;
- make adequate conceptual choices in the function of the local energy demand and local geological and hydrogeological conditions;
- collect and organize the needed data for a first assessment and then a feasibility study of the geothermal system;
- calculate basic feasibility aspects of a deep as well as of a shallow geothermal system;
- detect advantages and drawbacks in the choice of a site for geothermal use;
- assess/calculate the mid- and long-term behavior of a geothermal system in the function of the underground characteristics;
- assess possible impacts on the groundwater resources of a geothermal system.

Ce cours contribue aux acquis d'apprentissage I.1, I.2, I.3, II.1, II.2, III.1, III.2, III.3, IV.1, IV.3, IV.4, IV.5, V.1, V.2, VI.1, VI.2, VI.3, VI.4, VII.1, VII.3, VII.5, VII.6 du programme d'ingénieur civil des mines et géologue.

Savoirs et compétences prérequis

Basic knowledge and understanding of geology and hydrogeology. Elementary notions of physics (essentially thermodynamics) and chemistry. No official prerequisite course is compulsory.

Activités d'apprentissage prévues et méthodes d'enseignement

The course is composed of "ex-cathedra" lectures (see content above). Practical work/exercise (30h) consists of a study of the ideal geothermal system in one given site and for a given specific energy demand (i.e. on the basis of geological, hydrogeological, geomechanical, and thermal basic data, each group of students must prepare concurrent projects).

Mode d'enseignement (présentiel, à distance, hybride)

Combinaison d'activités d'apprentissage en présentiel et en distanciel


Explications complémentaires:

Face-to-face for theory teaching. In groups for practical work.

Lectures recommandées ou obligatoires et notes de cours

A pdf copy of slides and different publications will be made available on eCampus. For the shallow geothermy with open systems, it could be useful to check chapter 11 of the following book: Dassargues, A. 2018. Hydrogeology: groundwater science and engineering. Taylor & Francis CRC Press, 472p.

Modalités d'évaluation et critères

Examen(s) en session

Toutes sessions confondues

- En présentiel

évaluation orale

- En distanciel

évaluation orale


Explications complémentaires:

The oral exam consists of a short 'professional' ppt presentation of the main results from the practical work, then questions by the professors acting as 'stakeholders' of the geothermal operation ... The ppt presentation is about the results of the group's practical work. Individual questions will be asked by the professors. Good knowledge and a perfect command of the fundamentals from all the concerned topics of this geothermy course are indeed needed for being able to provide adequate answers.

Stage(s)

Remarques organisationnelles

The course will be given during the 2nd semester. The schedule and the room should be checked on CELCAT.

Contacts

Professor: Alain Dassargues 04/3662376 Alain.Dassargues@uliege.be
Professor: Bertrand François