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Karolis Januševičius, Juozas Bielskus, Vytautas Martinaitis
Thermodynamic simulation of solar thermal system
| Conference Information: |
9th International Conference on Environmental
Engineering, MAY 22-24, 2014 Vilnius, LITHUANIA |
| Source: |
ICEE-2011 - International Conference on Environmental
Engineering |
| Book Series: |
International Conference on Environmental Engineering
(ICEE) Selected papers |
| ISSN: |
ISSN 2029-7092 online |
| ISBN: |
978-609-457-640-9 / 978-609-457-690-4 CD |
| Year: |
2014 |
| Publisher: |
Vilnius Gediminas Technical University Press Technika |
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Abstract
An article presents the thermodynamic simulation study of operating solar thermal collector system. The target of this study is to examine
improvement possibilities of actual system by identifying avoidable exergy destruction. The simulation model was created in TRNSYS
environment and is based on the real operating solar thermal collector system, installed in Building Energy and Microclimate Systems
(BEMS) laboratory. Advanced thermodynamic analysis methods were used for the assessment of the system performance. Presented
simulation based method helps to identify the avoidable and unavoidable exergy destruction parts of the component, operated on transient
boundary conditions, in the system. The findings of this study reveal that the additional improvements of the system may create more
irreversibility than the actual system in the analyzed case. Considering the non-linear behavior of the system, the complex assessment
must be used to identify the rational parameters system components, in order to reach the lowest entropy production rate.
Keywords: solar thermal; thermohidronic loops; exergy analysis; TRNSYS.
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