Abstract
It is possible to reach temperatures of 800 K by using parabolic trough solar collector, which has an important place in solar thermal applications. It is possible to produce steam and generate electricity with high temperature heat energy obtained with these collectors. Also, highly efficient absorption cooling systems can be operated. There are many such applications in the world. There are a few applications in our country, though. In this study, for a collector selected as an example, according to the first law of thermodynamics, equations were obtained by writing the energy balance in a steady state. The thermal analysis of the collector was made using the equations obtained. Main parameters that affect useful heat value and thermal efficiency of collector; The effect of radiation value, ambient temperature, wind speed, fluid flow and fluid inlet temperature were examined through a program. It has been found that high fluid flow rate and low fluid inlet temperature increase efficiency. In addition, it has been observed that higher thermal performance can be obtained in cases where the intensity of solar radiation is high, the ambient temperature is high and the wind speed is low.
References
- 1. Bellos, E., Tzivanidis, C. (2017) Parametric investigation of nanofluids utilization in parabolic trough collectors, Thermal Science and Engineering Progress, 2, 71-79. doi.org/10.1016/j.tsep.2017.05.001
- 2. Bellos, E., Tzivanidis, C. (2018) Assessment of the thermal enhancement methods in parabolic trough collectors, International Journal of Energy and Environmental Engineering, 9, 59-70. doi.org/10.1007/s40095-017-0255-3
- 3. Kalogirou, S. A. (2012) A detailed thermal model of a parabolic trough collector receiver, Energy, 48(1), 298-306. doi.org/10.1016/j.energy.2012.06.023
- 4. Kalogirou, S. A. (2014) Solar energy engineering: processes and systems, Academic Press.
- 5. Kılıç, M., Yiğit, A. (2010) Isı transferi, Alfa Aktüel Yayın, Türkiye.
- 6. Mansour, K., Boudries, R., Dizene, R. (2018) Optical, 2D thermal modeling and exergy analysis applied for performance prediction of a solar PTC, Solar Energy, 174, 1169-1184. doi.org/10.1016/j.solener.2018.09.040
- 7. Peiró, G., Gasia, J., Miró, L., Prieto, C., Cabeza, L. F. (2017) Influence of the heat transfer fluid in a CSP plant molten salts charging process, Renewable Energy, 113, 148-158. doi.org/10.1016/j.renene.2017.05.083
- 8. Quezada–García, S., Sánchez–Mora, H., Polo–Labarrios, M. A., Cázares–Ramírez, R. I. (2019) Modeling and simulation to determine the thermal efficiency of a parabolic solar trough collector system, Case Studies in Thermal Engineering, 16, 100523. doi.org/10.1016/j.csite.2019.100523
- 9. Tzivanidis, C., Bellos, E., Korres, D., Antonopoulos, K. A., Mitsopoulos, G. (2015) Thermal and optical efficiency investigation of a parabolic trough collector, Case Studies in Thermal Engineering, 6, 226-237. doi.org/10.1016/j.csite.2015.10.005
- 10. Yılmaz, İ. H., Mwesigye, A. (2018) Modeling, simulation and performance analysis of parabolic trough solar collectors: A comprehensive review, Applied energy, 225, 135-174. doi.org/10.1016/j.apenergy.2018.05.014
Abstract
Güneş enerjisi ısıl uygulamaları içinde önemli bir yer tutan parabolik oluk tipi güneş toplayıcısı kullanılarak 800 K sıcaklıklara çıkmak mümkün olmaktadır. Bu toplayıcılarla elde edilen yüksek sıcaklıklı ısı enerjisi ile buhar üretmek, elektrik üretmek mümkün olabilmektedir. Ayrıca yüksek etki değerli absorpsiyonlu soğutma sistemleri de çalıştırılabilmektedir. Dünya üzerinde bu tür çok sayıda uygulama bulunmaktadır. Ülkemizde de az sayıda da olsa uygulamalar bulunmaktadır. Bu çalışmada, örnek olarak seçilen bir toplayıcı için termodinamiğin birinci kanuna göre, sürekli rejim halinde, enerji dengesi yazılarak denklemler çıkarılmıştır. Elde edilen denklemler kullanılarak toplayıcının ısıl analizi yapılmıştır. Toplayıcı faydalı ısı değerini ve ısıl verimini etkileyen ana parametrelerden; ışınım değeri, çevre sıcaklığı, rüzgar hızı, akışkan debisi ve akışkan giriş sıcaklığının etkisi yazılan bir program vasıtasıyla incelenmiştir. Yüksek akışkan debisi ve düşük akışkan giriş sıcaklığının verimi artırdığı bulunmuştur. Ayrıca, güneş ışınım şiddetinin büyük, çevre sıcaklığının yüksek ve rüzgar hızının düşük olduğu durumlarda daha yüksek ısıl performans elde edilebileceği görülmüştür.
References
- 1. Bellos, E., Tzivanidis, C. (2017) Parametric investigation of nanofluids utilization in parabolic trough collectors, Thermal Science and Engineering Progress, 2, 71-79. doi.org/10.1016/j.tsep.2017.05.001
- 2. Bellos, E., Tzivanidis, C. (2018) Assessment of the thermal enhancement methods in parabolic trough collectors, International Journal of Energy and Environmental Engineering, 9, 59-70. doi.org/10.1007/s40095-017-0255-3
- 3. Kalogirou, S. A. (2012) A detailed thermal model of a parabolic trough collector receiver, Energy, 48(1), 298-306. doi.org/10.1016/j.energy.2012.06.023
- 4. Kalogirou, S. A. (2014) Solar energy engineering: processes and systems, Academic Press.
- 5. Kılıç, M., Yiğit, A. (2010) Isı transferi, Alfa Aktüel Yayın, Türkiye.
- 6. Mansour, K., Boudries, R., Dizene, R. (2018) Optical, 2D thermal modeling and exergy analysis applied for performance prediction of a solar PTC, Solar Energy, 174, 1169-1184. doi.org/10.1016/j.solener.2018.09.040
- 7. Peiró, G., Gasia, J., Miró, L., Prieto, C., Cabeza, L. F. (2017) Influence of the heat transfer fluid in a CSP plant molten salts charging process, Renewable Energy, 113, 148-158. doi.org/10.1016/j.renene.2017.05.083
- 8. Quezada–García, S., Sánchez–Mora, H., Polo–Labarrios, M. A., Cázares–Ramírez, R. I. (2019) Modeling and simulation to determine the thermal efficiency of a parabolic solar trough collector system, Case Studies in Thermal Engineering, 16, 100523. doi.org/10.1016/j.csite.2019.100523
- 9. Tzivanidis, C., Bellos, E., Korres, D., Antonopoulos, K. A., Mitsopoulos, G. (2015) Thermal and optical efficiency investigation of a parabolic trough collector, Case Studies in Thermal Engineering, 6, 226-237. doi.org/10.1016/j.csite.2015.10.005
- 10. Yılmaz, İ. H., Mwesigye, A. (2018) Modeling, simulation and performance analysis of parabolic trough solar collectors: A comprehensive review, Applied energy, 225, 135-174. doi.org/10.1016/j.apenergy.2018.05.014
Details
| Primary Language | Turkish |
|---|---|
| Subjects | Mechanical Engineering |
| Journal Section | Research Articles |
| Authors | |
| Publication Date | December 31, 2021 |
| Submission Date | November 11, 2020 |
| Acceptance Date | November 10, 2021 |
| Published in Issue | Year 2021 Volume: 26 Issue: 3 |
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