Skip to Main content Skip to Navigation
Theses

Numerical and Experimental Study of Heat Pipes Used in Solar Applications

Abstract : Owing to the trend to development sustainability, solar systems (solar collector, solar concentrator, etc.) Are integrating (and asked to integrate even more) intensively residences and industries. In this context, two-phase systems like heat pipe seem highly effective because of their high heat transport capabilities and their passive operation in collectors’ technology. In view of the complexity of the heat pipes with a porous structure in this kind of application,most of the existing systems on the market use thermosyphons. Thus, the growing need of reliable and more efficient thermal control solutions is increasing for such systems. This thesis work focuses on the performance characterization of heat pipes with porous structure used in solar applications. A numerical study has been performed to model and simulate the behavior of a typical heat pipe using the Lattice Boltzmann method. An experimental study has also been done to characterize the performance of three prototypes tested under different conditions (condenser temperature, heat input and inclination angle). The effects induced by several parameters including the filling rate, working fluid and symmetry of the applied heat on the performance of these devices has also been investigated. In particular, heating asymmetry is found to induce dry-out earlier, all other things being equal. Optimal inclination is also determined where is balanced the maximum solar heat available and received by the heat pipe and the gravity-assisted liquid flow inside that device.
Document type :
Theses
Complete list of metadatas

https://tel.archives-ouvertes.fr/tel-02006392
Contributor : Abes Star :  Contact
Submitted on : Monday, February 4, 2019 - 3:45:33 PM
Last modification on : Tuesday, June 4, 2019 - 6:21:23 PM
Long-term archiving on: : Sunday, May 5, 2019 - 4:36:45 PM

File

2018ESMA0012_grissa.pdf
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-02006392, version 1

Collections

Citation

Kods Grissa. Numerical and Experimental Study of Heat Pipes Used in Solar Applications. Other. ISAE-ENSMA Ecole Nationale Supérieure de Mécanique et d'Aérotechique - Poitiers, 2018. English. ⟨NNT : 2018ESMA0012⟩. ⟨tel-02006392⟩

Share

Metrics

Record views

692

Files downloads

168