Analysis of empirical data on the equalization of the tempera-ture field of the channel walls when using fins of variable height
DOI:
https://doi.org/10.34031/ES.2025.3.08Keywords:
thermoelectric generator modules, temperature equalization, increased productivity, fins of variable height, compressed air, experimental researchAbstract
The results of experimental studies conducted to confirm the operability of the method of increasing the efficiency of electric energy generation by a thermoelectric generator set by intensifying heat transfer between rectangular channels due to the use of variable-height fins in their internal cavity are considered. The article contains information about the methodology of conducting two stages of experimental research. It is proved that the use of longitudinal fins of variable height leads to equalization of the temperature field of the channel walls in contact with thermoelectric generator modules, which contributes to an increase in their performance. Empirical graphical dependences obtained as a result of the systematization of experimental data are presented, on the basis of which it is possible to judge the temperature of the working fluid flows – air, changes in the temperature of the contacting wall along the course of cold and hot air flows coming from the vortex tube, with base and finned channels. Based on the graphs obtained, it is concluded that when implementing fins of variable height, the maximum wall temperature difference between the input and output points above the thermoelectric generator modules is from 3.8 to 1.5 °C for the cold flow channel and from 3.3 to 2.1 °C for the hot flow channel, which indicates a temperature equalization between the indicated dots. A graphical dependence is also shown, indicating an increase in the performance of a thermoelectric generator set as a result of using this method over a wide range of pressure changes in the working fluid.
References
[ГОСТ Р 7.0.5–2008]
1. Леонтьев А.И., Онищенко Д.О., Арутюнян Г.А. Выбор оптимального метода интенсификации теплообмена для повышения эффективности термоэлектрического генератора // Теплофизика и аэромеханика. – 2016. – Т. 23, № 5. – С. 779-787.
EDN: WWDCPF (https://www.elibrary.ru/wwdcpf)
2. Виноградов С.В., Хоанг Ч.Х. Повышение эффективности работы термоэлектрического генератора за счет интенсификации теплообмена // 62-я Межд. научная конф. Астраханского государственного технического университета: мат-лы конф. – Астрахань: АГТУ, 2018. – С. 183.
EDN: XZFNWH (https://www.elibrary.ru/xzfnwh)
3. Базыкин Д.А., Дахин С.В., Бараков А.В. Экспериментальное исследование методов повышения эффективности термоэлектрической генераторной установки // Промышленная энергетика. – 2024. – № 3. – С. 24-30.
EDN: MBOLKI (https://www.elibrary.ru/mbolki)
DOI: https://doi.org/10.34831/EP.2024.28.76.004
4. Гурин С.В., Соловьев А.А. Исследование возможности получения изотермического процесса при дросселировании в вихревом регуляторе давления газа // Вестник Уфимского государственного авиационного технического университета. – 2006. – Т. 8, № 4. – С. 3–6.
EDN: HVHLCV (https://www.elibrary.ru/hvhlcv)
5. Жидков М.А., Жидков Д.А. Повышение энергоэффективности процессов на газорегули¬рую¬щих станциях // Проблемы региональной энергетики. – 2012. – № 2. – С. 66–72.
EDN: PFXHQD (https://www.elibrary.ru/pfxhqd)
6. Ахметов Ю.М., Соловьев А.А., Тарасов А.А., Целищев А.В. Численное моделирование течения газожидкостного потока в вихревой трубе // Вестник Уфимского государственного авиационного технического университета. – 2010. – Т. 14, № 1(36). – С. 32–39.
EDN: PWZSQN (https://www.elibrary.ru/pwzsqn)
7. Pathak K.K., Giri A., Lingfa P. A numerical study of natural convective heat transfer from a shrouded vertical variable height non-isothermal fin array // Applied Thermal Engineering. – 2018. – Т. 130. – С. 1310-1318.
DOI: https://doi.org/10.1016/j.applthermaleng.2017.11.120
8. Al-Sarkhi A. Comparison between variable and constant height shrouded fin array subjected to forced convection heat transfer // International communications in heat and mass transfer. – 2005. – Т. 32, №. 3-4. – С. 548-556.
DOI: https://doi.org/10.1016/j.icheatmasstransfer.2004.02.017
[References, APA (7th ed.)]
1. Leont'ev, A. I., Onishchenko, D. O. & Arutyunyan, G. A. (2016). Selecting the optimum method of heat transfer intensification to improve efficiency of thermoelectric generator. Thermophysics and Aeromechanics, 23(2), 779-787.
https://doi.org/10.1134/S0869864316050139
2. Vinogradov, S. V. & Hoang, Ch. H. (2018). Povyshenie effektivnosti raboty termoelektricheskogo generatora za schet intensifikacii teploobmena [Improving the efficiency of a thermoelectric generator to account for the intensification of heat exchange]. In Proc. 62-ya Mezhdunarodnaya nauchnaya konferenciya Astrahanskogo gosudarstvennogo tekhnicheskogo universiteta : materialy konferencii (p. 183). Astrakhan State Technical University.
3. Bazykin, D. A., Dahin, S. V. & Barakov, A. V. (2024). Experimental study of the methods for increasing the efficiency of a thermoelectric generator unit. Promyshlennaya energetika, 3, 24-30.
https://doi.org/10.34831/EP.2024.28.76.004
4. Gurin, S. V. & Solov'ev, A. A. (2006). Issledovanie vozmozhnosti polucheniya izotermicheskogo processa pri drosselirovanii v vihrevom regulyatore davleniya gaza [Investigation of the possibility of obtaining an isothermal process during throttling in a vortex gas pressure regulator]. Vestnik UGATU, 8(4), 3-6.
5. Zhidkov, M. A. & Zhidkov, D. A. (2012). Povyshenie energoeffektivnosti processov na gazoreguliruyushchih stanciyah [Improving the energy efficiency of processes at gas-regulating stations]. Problems of the regional energetics, 2, 66-72.
6. Ahmetov, Yu. M., Solov'ev, A. A., Tarasov, A. A. & Celishchev, A. V. (2010). Chislennoe modelirovanie techeniya gazozhidkostnogo potoka v vihrevoj trube [Numerical modeling of the gas-liquid flow in a vortex tube]. Vestnik Ufimskogo gosudarstvennogo aviacionnogo tekhnicheskogo universiteta, 1(36), 32-39.
7. Pathak, K. K., Giri A. & Lingfa P. (2018). A numerical study of natural convective heat transfer from a shrouded vertical variable height non-isothermal fin array. Applied Thermal Engineering, 130, 1310-1318.
https://doi.org/10.1016/j.applthermaleng.2017.11.120
8. Al-Sarkhi, A. (2005). Comparison between variable and constant height shrouded fin array subjected to forced convection heat transfer. International communications in heat and mass transfer, 32(3 4), 548-556.
https://doi.org/10.1016/j.icheatmasstransfer.2004.02.017
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