This thesis presents the study of a prototype of an innovative method for determining the thermal conductivity and resistance of the soil. A literature review describes the recent developments in distributed thermal response tests. Then, a chapter presents whether or not the distributed thermal response tests optimize the total length of geothermal wells. This study is based on the design of a vertical geothermal well field closed loop method according to ASHRAE. A building in Montreal used as an example. Using the extracted data from the literature and integrating them with the previous design, allows us to answer the question mentioned at the beginning of Chapter. Then, a presentation of the prototype and experimental site is proposed to have an overview and understanding of the project scope. This prototype allows for thermal response tests using heating cables section. This prototype was developed to determine if the flexible plastic discs allow indeed to block the influence of convection and improve the analysis performed with an analytical solution describing conductive heat transfer only. The development of this project is based on a series of experimental tests on a small scale. In another part of this study, analysis of the results of the tests is made, to address the problems mentioned above. The analysis show that the installation of the flexible plastic discs along heating cable sections improves the results by at least 10%. The analyzes show the influence of convection on results and allowed to justify changes that will improve the built prototype. A final test emphasized the importance of the number of the flexible plastic discs the length of heating sections to consider for analysis and provided a difference of 1.2% between the In-situ thermal conductivity and that measured in the laboratory.
| Date | 6 Oct 2016 |
|---|
| Original language | French |
|---|
| Awarding Institution | - École de technologie supérieure
|
|---|
| Supervisor | Louis Lamarche (Supervisor) & Jasmin Raymond (Co-supervisor) |
|---|
Simon, F. (Author),
Lamarche (Supervisor) & Raymond (Co-supervisor),
6 Oct 2016Student thesis: Master's thesis › Master in Engineering: Mechanical Engineering