Hrvatske vode
 
Ekonomska analiza održivosti urbanog vodoopskrbnog sustava pokretanog solarnom fotonaponskom energijom
Economic analysis of the sustainability of urban wastewater systems powered by solar photovoltaic energy

Bojan Đurin1, Lucija Plantak2

Sažetak/Abstract: 

Solarni fotonaponski (FN) sustavi koji služe za proizvodnju električne energije za rad crpnih stanica koje crpe vodu koriste se oko 50 godina. U pravilu, takvi sustavi sastoje se od FN generatora, crpne stanice i vodospreme. Njihovo korištenje je u pravilu opravdano s ekološkog i društvenog stajališta, no ne i u potpunosti s ekonomskog stajališta. Međutim, ovakvi sustavi su jedina opcija koja se može koristiti u izoliranim i udaljenim područjima. Veliki nedostatak ovakvih sustava je mogućnost zatajenja uslijed pojave nedovoljne jakosti i intenziteta sunčevog zračenja. U ovom je radu korištena Metoda kritičnog perioda (MKP), osmišljena upravo radi otklanjanja navedenog problema. Uz navedeno, u radu je naglasak na ekonomskoj analizi u svrhu dokaza održivosti, odnosno prikaza ekonomske bilance Urbanog vodoopskrbnog sustava (UVS), dimenzioniranog metodom MKP. Ekonomska analiza je izvršena korištenjem Life Cycle Costs (LCC) analize za sve dobivene varijante UVS-a pokretanog FN energijom. Zaključeno je da FN energija ima opravdanu mogućnost korištenja u UVS-u, pri čemu se korištenjem MKP postiže održivost.

 

Solar photovoltaic (PV) systems used in electrical power generation for the operation of pumping stations have been used for about 50 years. In principle, these systems consist of a PV generator, pumping station and water tank. Their use is generally justified from the environmental and social viewpoints, although not fully economically. However, these systems are the only option that can be applied in isolated, remote areas. A great disadvantage of these systems is a possibility of their failure due to insufficient strength and intensity of sunlight. The paper uses the critical period approach (CPA), which was devised precisely to solve this problem. Additionally, the paper puts the emphasis on the economic analysis to prove sustainability, i.e. present the economic balance of an urban water supply system (UWSS) dimensioned with the CPA approach. The economic analysis was carried out by applying the Life Cycle Costs (LCC) analysis for all obtained variants of a UWSS powered by PV energy. The conclusion is that PV energy has a justified potential to be used in UWWSs, with the CPA inclusion to achieve sustainability.

Kategorija: 
Pregledni članak / Review Paper
Ključne riječi/Key words: 

vodoopskrbni sustav, solarna fotonaponska energija, održivost, Metoda kritičnog perioda, ekonomska analiza.

water supply system, solar photovoltaic energy, sustainability, critical period approach, economic analysis

Podaci o autorima/Authors affiliations: 

Geotehnički fakultet Sveučilišta u Zagrebu, Hallerova aleja 7, 42 000 Varaždin, bojan.djurin@gfv.hr

 

Samostalni istraživač, V. Gotovca 37, 42 000 Varaždin

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