Abstract. Introduction. Today, significant attention is being paid in our country to mitigating the effects of climate change and adapting to it, accelerating the transition to a “green” economy, and promoting a model of green and inclusive economic growth. Therefore, the use of solar water heating collectors in autonomous heating systems is considered a foundation of energy efficiency.
Methods and Materials. This article presents the results of research conducted by the authors to improve the efficiency of the heat exchange process in flat plate solar water heating collectors. The dynamics of fluid flow and the heat exchange process in the absorber tube of the flat solar water heating collector were modeled using computer simulation, specifically with the COMSOL Multiphysics software package.
Results. The absorber tube of the flat solar water heating collector was made from stainless steel, iron, copper, and aluminum. The heat exchange processes in these materials were modeled using CFD. The highest temperature was recorded in the copper (Cu) tube, confirming its high thermal conductivity. Aluminum (Al) came next, showing relatively good thermal conductivity. Iron (Fe) and steel exhibited the lowest temperature values, indicating slower heat transfer compared to copper and aluminum.
Conclusion. The results of this study provide recommendations for optimizing the design of absorber tubes in solar water heating collectors.
Abstract. Introduction. Today, significant attention is being paid in our country to mitigating the effects of climate change and adapting to it, accelerating the transition to a “green” economy, and promoting a model of green and inclusive economic growth. Therefore, the use of solar water heating collectors in autonomous heating systems is considered a foundation of energy efficiency.
Methods and Materials. This article presents the results of research conducted by the authors to improve the efficiency of the heat exchange process in flat plate solar water heating collectors. The dynamics of fluid flow and the heat exchange process in the absorber tube of the flat solar water heating collector were modeled using computer simulation, specifically with the COMSOL Multiphysics software package.
Results. The absorber tube of the flat solar water heating collector was made from stainless steel, iron, copper, and aluminum. The heat exchange processes in these materials were modeled using CFD. The highest temperature was recorded in the copper (Cu) tube, confirming its high thermal conductivity. Aluminum (Al) came next, showing relatively good thermal conductivity. Iron (Fe) and steel exhibited the lowest temperature values, indicating slower heat transfer compared to copper and aluminum.
Conclusion. The results of this study provide recommendations for optimizing the design of absorber tubes in solar water heating collectors.
Annotatsiya. Kirish. Bugungi kunda mamlakatimizda iqlim oʻzgarishi taʼsirini kamaytirish va unga moslashish, “yashil” iqtisodiyotga oʻtish choralarini jadallashtirish, “yashil” va inklyuziv iqtisodiy oʻsish modelini targʻib qilishga katta eʼtibor qaratilmoqda. Shuning uchun ham avtonom issiqlik ta’minoti tizimlarida quyosh suv qizdirish kollektorlaridan foydalanish energiya samaradorlikning asosi hisoblanadi.
Usul va materiallar. Ushbu maqolada ham mualliflar tomonidan yassi quyosh suv qizdirish kollektorlari va ularda kechadigan issiqlik almashinuv jarayonining samaradorligini oshirish bo‘yicha o‘tkazilgan tadqiqot natijalari keltirilgan. Tadqiqotchilar tomonidan yassi quyosh suv qizdirish kollektori absorber trubasida suyuqlik harakat dinamikasi va issiqlik almashinuvi jarayoni kompyuter modellashtirish usuli orqali amalga oshirilgan bo‘lib COMSOL Multiphysics dasturiy paketidan foydalanilgan.
Natija. Yassi quyosh suv qizdirish kollektori absorber trubasi zanglamaydigan poʻlat, temir, mis va alyuminiydan tayyorlangan bo‘lib, ulardagi issiqlik almashinuvi jarayonlari CFD modellashtirilgan. Harorat mis (Cu) trubada eng yuqori qiymatni ko‘rsatgan, bu uning yuqori issiqlik o‘tkazuvchanlik xususiyatlariga ega ekanligini tasdiqlaydi. Keyingi o‘rinda alyuminiy (Al), bu nisbatan yaxshi issiqlik o‘tkazuvchanligiga ega ekanligini ko‘rsatadi. Temir (Fe) va po‘lat (Po‘lat) eng past harorat qiymatlarini qayd etadi, bu issiqlik uzatish mis va alyuminiyga qaraganda sekinroq ekanligini ko‘rsatadi.
Xulosa. Ushbu tadqiqot natijalari quyosh suv qizdirish kollektorlari uchun absorber trubalari konstruksiyalarini optimallashtirish boʻyicha tavsiyalar beradi
Аннотация: Введение. В настоящее время в нашей стране уделяется большое внимание смягчению последствий изменения климата и адаптации к ним, ускорению перехода к «зеленой» экономике, а также продвижению модели «зеленого» и инклюзивного экономического роста. В связи с этим использование солнечных водонагревательных коллекторов в системах автономного теплоснабжения считается основой энергоэффективности.
Методы и материалы. В данной статье приведены результаты исследований, проведенных авторами по повышению эффективности теплопередачи в плоских солнечных водонагревательных коллекторах. Динамика движения жидкости и процесс теплообмена в абсорберной трубке плоского солнечного водонагревательного коллектора былисмоделированы с помощью метода компьютерного моделирования с использованием программного пакета COMSOL Multiphysics.
Результаты. Абсорберная трубка плоского солнечного водонагревательного коллектора была изготовлена из нержавеющей стали, железа, меди и алюминия, при этом процессы теплообмена были смоделированы методом CFD. Самая высокая температура была зафиксирована в медной (Cu) трубке, что подтверждает ее высокую теплопроводность. Далее следует алюминий (Al), который также обладает хорошими теплопроводными свойствами. Железо (Fe) и сталь показали наименьшие значения температуры, что свидетельствует о более медленной теплопередаче по сравнению с медью и алюминием.
Вывод. Результаты данного исследования дают рекомендации по оптимизации конструкции абсорберных трубок для солнечных водонагревательных коллекторов.
| № | Имя автора | Должность | Наименование организации |
|---|---|---|---|
| 1 | Toshmamatov B.M. | katta o'qituvchi | Qarshi davlat texnika universiteti |
| 2 | Shamurotova S.M. | katta o'qituvchi | Qarshi davlat texnika universiteti |
| 3 | Choriyeva S.Y. | assistent | Qarshi davlat texnika universiteti |
| № | Название ссылки |
|---|---|
| 1 | Mark A Delucchi, Mark Z Jacobson. Meeting the world’s energy needs entirely with wind, water, and solar power. Bulletin of the Atomic Scientists 69(4):30-40. DOI:10.1177/0096340213494115 |
| 2 | Zaboli, M.; Mousavi, Ajarostaghi, S.S.; Saedodin, S.; Saffari, Pour, M. Thermal Performance Enhancement Using Absorber Tube with Inner Helical Axial Fins in a Parabolic Trough Solar Collector. Appl. Sci. 2021, 11, 7423. https://doi.org/10.3390/app11167423 |
| 3 | Nugroho Agung Pambudi, Iksan Riva Nanda, Andi Dwi Saputro. The energy effciency of a modifed v-corrugated zinc collector on the performance of solar water heater (SWH). Results in Engineering 18 (2023) 101174. https://doi.org/10.1016/j.rineng.2023.101174 |
| 4 | Mohamad Aramesh, Bahman Shabani. Performance evaluation of an enhanced self-storing evacuated tube solar collector in residential water heating application. Journal of Energy Storage 71 (2023) 108118. https://doi.org/10.1016/j.est.2023.108118 |
| 5 | Sejjad Mousa Rahi, Mishaal A. AbdulKareem. Experimental and Numerical Investigation of the Thermal Performance of Spiral Type Solar Collector. Journal of Mechanical Engineering Research and Developments. Vol. 44, No. 10, pp. 239-250. Published Year 2021. https://www.researchgate.net/publication/355175758 |
| 6 | Farhan, H. A., Nayak, S., Sanjay, Paswan,M. (2023). Numerical analysis with experimental validation for thermal performance of flat plate solar water heater using CuO/distilled water nanofluid in closed loop. Journal of Mechanical Science and Technology 37 (5) (2023) 2649~2656. |