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Experimental Investigations of Energy and Exergy Efficiencies of an Evacuated Tube Solar Collector

Faculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland
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Presented at the Innovations-Sustainability-Modernity-Openness Conference (ISMO’19), Bialystok, Poland, 22–23 May 2019.
Proceedings 2019, 16(1), 2; https://doi.org/10.3390/proceedings2019016002
Published: 11 June 2019
PDF [236 KB, uploaded 11 June 2019]

Abstract

The main purpose of the analysis is to determine the influence of the weather and operating conditions on the energy and exergy efficiencies of an evacuated tube solar collector, heat pipe type with a mixture of water and propylene glycol (50%/50%) as a working fluid under the Polish climate conditions (the geographical coordinates for Lublin: Latitude 51°15′ N and longitude 22°34′ E), according to the experimental data. The solar collector with an aperture area of 3.6 m2 is a main component of the solar hot water test installation located in the laboratory of the Faculty of Environmental Engineering, Lublin University of Technology. Studies have been presented for August. Based on the results, the average daily energy efficiency of the solar collector at the level of 34% (14.3–58.8%) and the average daily exergy efficiency of the solar collector at the level of 2.25% (0.86–3.75%) were established.
Keywords: solar energy; evacuated tube solar collector; energy efficiency; exergy efficiency solar energy; evacuated tube solar collector; energy efficiency; exergy efficiency
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Siuta-Olcha, A.; Cholewa, T.; Dopieralska-Howoruszko, K. Experimental Investigations of Energy and Exergy Efficiencies of an Evacuated Tube Solar Collector. Proceedings 2019, 16, 2.

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