Academic Journal
Influence of current and temperature on discharge characteristics of electrochemical nickel-cadmium system ; Uticaj struje i temperature na karakteristike pražnjenja elektrohemijskog nikal-kadmijum sistema
| العنوان: | Influence of current and temperature on discharge characteristics of electrochemical nickel-cadmium system ; Uticaj struje i temperature na karakteristike pražnjenja elektrohemijskog nikal-kadmijum sistema |
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| المؤلفون: | Todorović, Andreja, Grgur, Branimir, Rajović, Jelena |
| المصدر: | Hemijska industrija |
| بيانات النشر: | Association of Chemical Engineers of Serbia |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | nickel-cadmium battery, alkaline battery, internal electrical resistance, power losses, battery efficiency level, discharging, nikal-kadmijum baterije, alkalni akumulatori, unutrašnja električna otpornost baterija, gubici snage, stepen iskorišćenja baterije, pražnjenje |
| الوصف: | The paper elaborates determination of characteristic values in the discharging process of non-hermetic nickel-cadmium galvanic battery with nominal voltage Un = 60 V and nominal capacity qn = C5 = 190 A h and its dependence from current and temperature. Study has been performed with the set of experimental metering of voltages, electromotive force, current from discharge time range and electromotive force in steady state regime before and after battery charging. Electromotive force characteristics are obtained by using the Nernst's equation, while the least square method was used to determine the average values of internal electrical resistivity, power losses and efficiency level. These results were used in the approximate exponential functions to determine the range dependence of the efficiency level from the internal electrical resistance of discharge current in reliance from the temperature range. Obtained results show that, in accordance to the given voltage variation of 10% Un, this type of battery holds maximal full load current of one hour capacity at the temperature of 25°C and maximal full load current of two hours capacity at the temperature of -30°C. The methodology used in the case study covers determination of the electromotive force in time range based on the metered results of values during complete battery fullness and emptiness with prior determination of equilibrium constants of galvanic battery reaction through method suggested by the author of this paper. Further process, using the electromotive force values obtained through the aforementioned process, the metered current, and approximate polynomial function of the nominal discharge voltage characteristic determines range of battery internal electric resistance from time, followed by the selection of discharge cases with average values for: voltage, electromotive force, internal electrical resistance, available and utilized power, power losses, and battery efficiency level. An overview of the obtained characteristics for analyzed battery and ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| تدمد: | 0367-598X |
| Relation: | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1651; http://TechnoRep.tmf.bg.ac.rs/bitstream/id/8637/0367-598X1000015T.pdf; 2-s2.0-77956486259; 000282550400008 |
| DOI: | 10.2298/HEMIND100214015T |
| الاتاحة: | http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1651 https://doi.org/10.2298/HEMIND100214015T http://TechnoRep.tmf.bg.ac.rs/bitstream/id/8637/0367-598X1000015T.pdf |
| Rights: | openAccess ; https://creativecommons.org/licenses/by-nc-nd/4.0/ ; BY-NC-ND |
| رقم الانضمام: | edsbas.CE55FC78 |
| قاعدة البيانات: | BASE |
| تدمد: | 0367598X |
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| DOI: | 10.2298/HEMIND100214015T |