Experimental and numerical research of thermal processes in the ТST Tanks with thermal oil and a phase change medium
Апстракт
This paper surveys a part of the activities (performed during the realization of the third year of
project III 42011 financed by the Ministry of education and science of the Republic of Serbia) on the
development of TST whose storage medium melts at the atmospheric pressure, enabling on that way the
use of the energy of phase change for energy storage. The original experimental setup adapted for use of
paraffin as a phase change media (volume 77 dm3, heating power 2.4 kW) was modified by inserting four
vertically positioned tubes (inner diameter 120 mm) filled by paraffin into the tank. The rest of the tank
was filled with thermal oil. Storage media was cooled by the air which circulates around the tank. The
research was realized in two phases: a) with thermal oil as the only storage media; b) with the
combination of paraffin and thermal oil. Inside the main body of the tank the temperature measurements
were performed by 12 thermocouples, 4 along the tanks height and 3 along t...he tank radius, and inside the
cylinder filled with paraffin with 4 vertically positioned thermocouples. For the development of the
numerical model of heat transfer and fluid flow processes in TST a commercial numerical package Fluent
12.1 was used, since it possesses its own routine for computation a temperature and flow fields in TST
with the change of phases, but also it allows to user to implement the package with its own model by
using the user define functions. Measurements and the numerical computation were performed for nonstationary
as well as for stationary working regimes. A good agreement between the numerical and
experimental results was achieved.
Кључне речи:
TES / Measurements / Numerical model / Phase change / Thermal oil / ParaffinИзвор:
Proceedings of 16th Symposium on Thermal Science and Engineering of Serbia, Sokobanja, Serbia, 2013, 386-399Финансирање / пројекти:
- Развој и унапређење технологија за енергетски ефикасно коришћење више форми пољопривредне и шумске биомасе на еколошки прихватљив начин, уз могућност когенерације (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-42011)
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Živković, Goran AU - Rudonja, Nedžad AU - Komatina, Mirko AU - Repić, Branislav PY - 2013 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5226 AB - This paper surveys a part of the activities (performed during the realization of the third year of project III 42011 financed by the Ministry of education and science of the Republic of Serbia) on the development of TST whose storage medium melts at the atmospheric pressure, enabling on that way the use of the energy of phase change for energy storage. The original experimental setup adapted for use of paraffin as a phase change media (volume 77 dm3, heating power 2.4 kW) was modified by inserting four vertically positioned tubes (inner diameter 120 mm) filled by paraffin into the tank. The rest of the tank was filled with thermal oil. Storage media was cooled by the air which circulates around the tank. The research was realized in two phases: a) with thermal oil as the only storage media; b) with the combination of paraffin and thermal oil. Inside the main body of the tank the temperature measurements were performed by 12 thermocouples, 4 along the tanks height and 3 along the tank radius, and inside the cylinder filled with paraffin with 4 vertically positioned thermocouples. For the development of the numerical model of heat transfer and fluid flow processes in TST a commercial numerical package Fluent 12.1 was used, since it possesses its own routine for computation a temperature and flow fields in TST with the change of phases, but also it allows to user to implement the package with its own model by using the user define functions. Measurements and the numerical computation were performed for nonstationary as well as for stationary working regimes. A good agreement between the numerical and experimental results was achieved. C3 - Proceedings of 16th Symposium on Thermal Science and Engineering of Serbia, Sokobanja, Serbia T1 - Experimental and numerical research of thermal processes in the ТST Tanks with thermal oil and a phase change medium EP - 399 SP - 386 UR - https://hdl.handle.net/21.15107/rcub_machinery_5226 ER -
@conference{ author = "Živković, Goran and Rudonja, Nedžad and Komatina, Mirko and Repić, Branislav", year = "2013", abstract = "This paper surveys a part of the activities (performed during the realization of the third year of project III 42011 financed by the Ministry of education and science of the Republic of Serbia) on the development of TST whose storage medium melts at the atmospheric pressure, enabling on that way the use of the energy of phase change for energy storage. The original experimental setup adapted for use of paraffin as a phase change media (volume 77 dm3, heating power 2.4 kW) was modified by inserting four vertically positioned tubes (inner diameter 120 mm) filled by paraffin into the tank. The rest of the tank was filled with thermal oil. Storage media was cooled by the air which circulates around the tank. The research was realized in two phases: a) with thermal oil as the only storage media; b) with the combination of paraffin and thermal oil. Inside the main body of the tank the temperature measurements were performed by 12 thermocouples, 4 along the tanks height and 3 along the tank radius, and inside the cylinder filled with paraffin with 4 vertically positioned thermocouples. For the development of the numerical model of heat transfer and fluid flow processes in TST a commercial numerical package Fluent 12.1 was used, since it possesses its own routine for computation a temperature and flow fields in TST with the change of phases, but also it allows to user to implement the package with its own model by using the user define functions. Measurements and the numerical computation were performed for nonstationary as well as for stationary working regimes. A good agreement between the numerical and experimental results was achieved.", journal = "Proceedings of 16th Symposium on Thermal Science and Engineering of Serbia, Sokobanja, Serbia", title = "Experimental and numerical research of thermal processes in the ТST Tanks with thermal oil and a phase change medium", pages = "399-386", url = "https://hdl.handle.net/21.15107/rcub_machinery_5226" }
Živković, G., Rudonja, N., Komatina, M.,& Repić, B.. (2013). Experimental and numerical research of thermal processes in the ТST Tanks with thermal oil and a phase change medium. in Proceedings of 16th Symposium on Thermal Science and Engineering of Serbia, Sokobanja, Serbia, 386-399. https://hdl.handle.net/21.15107/rcub_machinery_5226
Živković G, Rudonja N, Komatina M, Repić B. Experimental and numerical research of thermal processes in the ТST Tanks with thermal oil and a phase change medium. in Proceedings of 16th Symposium on Thermal Science and Engineering of Serbia, Sokobanja, Serbia. 2013;:386-399. https://hdl.handle.net/21.15107/rcub_machinery_5226 .
Živković, Goran, Rudonja, Nedžad, Komatina, Mirko, Repić, Branislav, "Experimental and numerical research of thermal processes in the ТST Tanks with thermal oil and a phase change medium" in Proceedings of 16th Symposium on Thermal Science and Engineering of Serbia, Sokobanja, Serbia (2013):386-399, https://hdl.handle.net/21.15107/rcub_machinery_5226 .