Comparison of heat efficiencies of flat-plate and vacuum tube collectors integrated with Organic Rankine Cycle in Adana climate conditions


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ATIZ A., KARAKILÇIK M.

PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI, cilt.26, ss.106-112, 2020 (ESCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 26 Konu: 1
  • Basım Tarihi: 2020
  • Doi Numarası: 10.5505/pajes.2019.34033
  • Dergi Adı: PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
  • Sayfa Sayıları: ss.106-112

Özet

In this study, the thermodynamic performance of solar collectors (FPSCs) and vacuum tube solar collectors (VTSCs), electricity and hydrogen production were numerically compared. Both systems were analyzed for one year in Adana climate conditions. FPSCs and VTSCs are solar energy technologies that can produce heat energy from solar energy. They are used in various places to meet the need for hot water or warming. However, today electricity is used more in many places, electricity generation is becoming more valuable every day. Thus, humanity seeks to produce electricity from various sources. Organic Rankine Cycle (ORC) is a very important machine that can produce electricity from sources at low and high temperatures. In this way, the heat energy produced in the FPSCs and VTSCs was transferred to the ORC by means of a pump and electricity was generated. The electricity produced in the ORC was transferred to an electrolysis system where hydrogen was produced by electrolysis of water. The thermodynamic analysis of the system was carried out by the Engineering Equation Analyzer (EES) simulation program. According to the results, with the increase of the solar energy and ambient temperature, the thermal efficiency of the system consisting of the FPSCs and VTSCs and thus the power production efficiency of ORC increased. Thanks to these increases, hydrogen production has also increased significantly. Thus, in July, the maximum thermal efficiency of VTSCs and FPSCs was found as 6.25% and 5.46%, respectively.