Panagiotis Lykas

Dr. Panagiotis Lykas

Department of Thermal Engineering, National Technical University of Athens, Athens, Attikí, Greece
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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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19 October 2022 in International Journal of Hydrogen Energy
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Journal Article
Closed access
PLPanagiotis Lykas
Panagiotis Lykas
NGNikolaos Georgousis
Nikolaos Georgousis
EBEvangelos Bellos
Evangelos Bellos
Christos TzivanidisChristos Tzivanidis
Christos Tzivanidis

14 February 2024 in International Journal of Hydrogen Energy
Verified
Journal Article
Closed access
PLPanagiotis Lykas
Panagiotis Lykas
Evangelos BellosEvangelos Bellos
Evangelos Bellos
Angeliki KitsopoulouAngeliki Kitsopoulou
Angeliki Kitsopoulou
Christos TzivanidisChristos Tzivanidis
Christos Tzivanidis

1 January 2022 in Energy Conversion and Management
Verified
Journal Article
Closed access
NGNikolaos Georgousis
Nikolaos Georgousis
PLPanagiotis Lykas
Panagiotis Lykas
Evangelos BellosEvangelos Bellos
Evangelos Bellos
CTChristos Tzivanidis
Christos Tzivanidis

12 February 2022 in Applied Energy
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Journal Article
Closed access
PLPanagiotis Lykas
Panagiotis Lykas
NGNikolaos Georgousis
Nikolaos Georgousis
Evangelos BellosEvangelos Bellos
Evangelos Bellos
CTChristos Tzivanidis
Christos Tzivanidis

8 February 2024 in Applied Thermal Engineering
Verified
Journal Article
Open access
Evangelos BellosEvangelos Bellos
Evangelos Bellos
Ahmad ArabkoohsarAhmad Arabkoohsar
Ahmad Arabkoohsar
PLPanagiotis Lykas
Panagiotis Lykas
CSChristos Sammoutos
Christos Sammoutos
Angeliki KitsopoulouAngeliki Kitsopoulou
Angeliki Kitsopoulou
CTChristos Tzivanidis
Christos Tzivanidis

23 February 2022 in Applied Sciences
Verified
Journal Article
Open access
PDF file
Evangelos BellosEvangelos Bellos
Evangelos Bellos
PLPanagiotis Lykas
Panagiotis Lykas
Christos TzivanidisChristos Tzivanidis
Christos Tzivanidis
The purpose of this simulation study is the examination of a solar-driven power cycle that is driven by collectors with evacuated tubes. The power cycle is an organic Rankine cycle (ORC) that works with cyclopentane. The novelty of the cycle is the use of reheating in order to enhance its thermodynamic efficiency, while the cycle also has a recuperator. Moreover, the cycle is compared with the conventional ORC in order to determine the performance enhancement with the examined idea. The analysis is done with a developed program in Engineering Equation Solver and both in steady-state and transient conditions for a typical year. The analysis was conducted in terms of energy and economic performance. According to an optimization procedure for maximizing the net present values of the investment, it is found that the novel design leads to a net present value of 68 k€, a simple payback of 10 years, and a yearly energy efficiency of 7.0%, while the respective values for the conventional ORC are 44 k€, 10.8 years, and 5.1% for its optimal design according to the net present values maximization. Thus, it is obvious that the suggested design increases both energy and financial performance, compared to the usual design.