Zahra Porhemmat
M. Sc. Thesis
- Title: Simulation of Solar Seasonal Storage Systems.
- Advisor: Dr. Farschad Torabi.
- Graduation Date: February 1, 2017.
- Abstract
The assessment of the behavior of zinc-silver oxide batteries (ZSOB) is highly significant due to their high energy density, specific energy and also their increasing applications in different industries. Full understanding of the behavior of the ZSOB during the charging and discharging process is necessary to resolve problems related to charge and discharge cycles of the batteries. However, no prior study has focused on simulations of oxygen cycle to predict the behavior of ZSOBs. The current study sheds light on the simulation and modeling of oxygen cycle that is activated when the battery is charging, through mathematical modeling using the governing equations. The governing equations, that are strongly coupled to each other, are solved for the charging process in C ++ by utilizing computational fluid dynamics and finite volume method. The equations are also solved simultaneously and seamlessly in all three regions including the positive electrode, negative electrode and separator regions to find variables, such as oxygen concentration, electrode potential, electrolyte potential and electrolyte concentration. Previous studies only investigated the discharge process simulation regardless of the state of charge (SOC) parameter. Therefore, the SOC parameters are used for simulation of discharge process to find potential electrode, electrolyte and electrolyte concentration variables. The characteristic diagram shows that the inactive oxygen cycle has side reaction in the beginning and then the main reactions can be overcome through the charging process simulation as a result of this study. However, the results of this study indicate that the impact of main reactions reduces gradually during the elapse of time. When the battery SOC parameter reaches near to value of one, the current becomes almost constant. In other words, all the input voltage is consumed due to side reactions. Furthermore, the discharge process simulation characteristic diagram with SOC is closer to the experimental characteristic diagram.
Awards
- Zahra Porhemmat, Niknaz Nakhaee, Mehran Noori,
First winner award in
Second National Competition on Energy and Environment Elites, Saba App , Presidency of Islamic Republic of Iran, Vice-Presidency of Science and Technology, September 2016.
Memorial Events
- K. N. Toosi Graduation Ceremony, 2016
- K. N. Toosi Mechanical Engineering Reunion, 2016
- Student Sports Events, 2016
Faculty of Mechanical Eng. of K. N. Toosi University of Technology
Vanak Square, Molla-Sadra, Pardis
Box 19395-1999
1999143344 TEHRAN
IRAN (ISLAMIC REP.)
Tell: (+98 21) 8867 4841-8 Fax: (+98 21) 8867 7274
Website: www.kntu.ac.ir
Email: mechanic@K
( Notice that to avoid spam mails, "kntu.ac.ir" is replaced with K )