F
Frangiskos V. Topalis
Researcher at National Technical University of Athens
Publications - 73
Citations - 1238
Frangiskos V. Topalis is an academic researcher from National Technical University of Athens. The author has contributed to research in topics: Fluorescent lamp & Voltage. The author has an hindex of 19, co-authored 71 publications receiving 1058 citations. Previous affiliations of Frangiskos V. Topalis include National and Kapodistrian University of Athens.
Papers
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Quantifying energy savings in daylight responsive systems : The role of dimming electronic ballasts
TL;DR: In this article, a set of simulations were performed for a photosensor with an ideal cosine spatial sensitivity distribution installed in a typical office room using two control algorithms, closed loop and integral reset, trying to quantify the relative differences in energy savings.
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Dielectric behaviour of polluted porcelain insulators
TL;DR: In this article, the dielectric behavior of polluted porcelain insulators is investigated by means of experimental tests and simulation methods, which leads to the identification of the arc constants.
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Influence of large-scale installation of energy saving lamps on the line Voltage distortion of a weak network supplied by photovoltaic station
TL;DR: In this article, the harmonic distortion extent caused in weak lowvoltage networks due to a possible large-scale installation of the widely spread compact fluorescent lamps (CFLs) is analyzed.
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Multi-criteria decision analysis to select the optimum position and proper field of view of a photosensor
TL;DR: In this article, a decision-making method capable of estimating the best position of a camera on the ceiling and its proper FOV based on multiple criteria analysis is presented, including the correlation of the lighting levels between the working plane and the ceiling, the corresponding energy savings and lighting adequacy.
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Harvesting daylight with LED or T5 fluorescent lamps? The role of dimming
Lambros T. Doulos,Lambros T. Doulos,Aris Tsangrassoulis,Panagiotis A. Kontaxis,Panagiotis A. Kontaxis,A. Kontadakis,Frangiskos V. Topalis +6 more
TL;DR: In this paper, the authors quantify energy savings among different LED and T5 fluorescent luminaires that are commonly used with daylight harvesting systems in offices and investigate their impact on power quality.