Acta Montanistica Slovaca (Dec 2001)

Utilization of photovoltaic panels in urban build-up areas – grid on

  • Rybár Radim,
  • Tauš Peter

Journal volume & issue
Vol. 6, no. special issue 1
pp. 41 – 45

Abstract

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Photovoltaic systems belong to the most perspective alternative sources of energy. We expect that during a relatively short period of time, the photovoltaic systems will slowly cover 5 to 10 % of the whole consumption of the electricity. One of the conditions of integration to European Community is the rising of the part of alternative sources in the production of energy. Besides another technologies, it’s also possible to reach it with an installation of the photovoltaic systems in already-existed building-up area. The photovoltaic systems “Grid on” are used especially in places with the advanced net of electric lines – in big cities. The invertors developed especially for the photovoltaic systems "Grid on" have the effeciency higher than 90 % and they are absolute safe against the bias voltage.From the entire number of days of an year in Slovakia the sun shines from 1300 to 2200 hours, in Košice it’s 2100 hours. An average amount of energy falling down by one day is 3,3 kW.h.m-2. An average effective power of one m2 of the photovoltaic panels is 110 W.m-2 of the standard illuminance 1000 W.m-2 and the solar spectrum AM 1,5. Annually it’s possible to make from the photovoltaic panel (1 m2) 120,45 kW.h. Average amount of the solar energy shape to the south-orient area in Košice is 101,5 kW.h.m-2. In Košice is an ideal inclination of the absorption area of the photovoltaic panels from horizontal plains from 58° to 65° for the year-around operation. At optimal conditions it’s possible by integrating photovoltaic panels with the construction of the balcony barrier from one block of flats about 10 MW.h per year. If we utilise the all areas applicable for the installation of photovoltaic panels (building exteriors, roofs, shady component,..), we able to cast about a few multiple of these value just for one block of flat.Today, the cost of the photovoltaic systems is many times higher than the cost of the electric energy. But the cost consequently a new technology of production of the primary materials is allways falling.

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