TY - GEN
T1 - Numerical study of flow characteristic and heat transfer on ultracapacitor stack with Reynolds number variations
AU - Gunawan, Christopher
AU - Djanali, Vivien Suphandani
AU - Paradigma, Nana
AU - Lystianingrum, Vita
N1 - Publisher Copyright:
© 2018 Author(s).
PY - 2018/7/13
Y1 - 2018/7/13
N2 - Ultracapacitor is a reversible electrochemical energy storage device. The use of ultracapacitor can be found in a machine that need to store high density energy, such as automotive, wind energy powerplant and industry. In automotive, it is used as an energy storage in electrical car and for the engine start-up. Ultra capacitor is also used as the electronic conditioner to improve the quality of power extracted on wind turbine. In industry, it can be used as emergency power supply. In the use of ultracapacitor, aging often occurs in consequence of the increasing temperature that causes the destruction in ultracapacitor. Because of that, a cooling system that is capable to maintain the working temperature, is used. The common one is to use the forced air cooling. In this study, the effect of different volumetric flow rate of the fan and the allowable electric current that the ultracapacitor can withstand are investigated. The ultracapacitors were modeled in three dimensions and simulated by using the Reynolds Averaged Navier-Stokes method. The simulation is performed in a steady, segregated manner, with the assumptions of incompressible flow, with various turbulence models. The electrical current loaded in the ultracapacitor was set at the maximum current of 100 Ampere with the variation of Reynolds of 6,000, 12,000 and 24,000. It is shown that the results is slightly sensitive to the turbulence model used. The Reynolds number has significant effect towards the temperature and flow distributions around the ultracapacitors. However, for the given electricity load, the results shows that the maximum temperature around the ultracapacitor exceeds the allowable operating temperature of the ultracapacitor.
AB - Ultracapacitor is a reversible electrochemical energy storage device. The use of ultracapacitor can be found in a machine that need to store high density energy, such as automotive, wind energy powerplant and industry. In automotive, it is used as an energy storage in electrical car and for the engine start-up. Ultra capacitor is also used as the electronic conditioner to improve the quality of power extracted on wind turbine. In industry, it can be used as emergency power supply. In the use of ultracapacitor, aging often occurs in consequence of the increasing temperature that causes the destruction in ultracapacitor. Because of that, a cooling system that is capable to maintain the working temperature, is used. The common one is to use the forced air cooling. In this study, the effect of different volumetric flow rate of the fan and the allowable electric current that the ultracapacitor can withstand are investigated. The ultracapacitors were modeled in three dimensions and simulated by using the Reynolds Averaged Navier-Stokes method. The simulation is performed in a steady, segregated manner, with the assumptions of incompressible flow, with various turbulence models. The electrical current loaded in the ultracapacitor was set at the maximum current of 100 Ampere with the variation of Reynolds of 6,000, 12,000 and 24,000. It is shown that the results is slightly sensitive to the turbulence model used. The Reynolds number has significant effect towards the temperature and flow distributions around the ultracapacitors. However, for the given electricity load, the results shows that the maximum temperature around the ultracapacitor exceeds the allowable operating temperature of the ultracapacitor.
UR - https://www.scopus.com/pages/publications/85050473385
U2 - 10.1063/1.5046234
DO - 10.1063/1.5046234
M3 - Conference contribution
AN - SCOPUS:85050473385
T3 - AIP Conference Proceedings
BT - Disruptive Innovation in Mechanical Engineering for Industry Competitiveness
A2 - Djanali, Vivien S.
A2 - Suwarno, null
A2 - Pramujati, Bambang
A2 - Yartys, Volodymyr A.
PB - American Institute of Physics Inc.
T2 - 3rd International Conference on Mechanical Engineering, ICOME 2017
Y2 - 5 October 2017 through 6 October 2017
ER -