Application of the PV systems for power supply of Heat Pumps

Svijet sve više prepoznaje važnost obnovljivih izvora energije, što je vidljivo po porastu novoinstaliranih kapaciteta iz godine u godinu. Prethodne 2021. godine instalirano je čak 315 GW novih obnovljivih izvora energije, a tu važnost uočava i Republika Hrvatska, koja po udjelu obnovljivih izvora energije u konačnoj potrošnji električne energije premašuje prosjek Europske unije. Ovim radom nastoji se utvrditi isplativost fotonaponskih sustava za napajanje toplinskih crpki, na način da se postojeće grijanje na plin objekta u Slavonskom Brod zamjenilo toplinskom crpkom (zrak-voda) napajanom fotonaponskim sustavom. Postojeći sustav grijanja predstavlja stvarno stanje potrošnje, preračunato po trenutnim tržišnim cijenama, dok je potrošnja toplinske crpke procijenjena na temelju energije potrošene u prvom slučaju. Radom se zaključilo kako je za povrat investicije potrebno 11 godina po trenutnim tržišnim cijenama, kako energenata tako i samih sustava. Utvrđeno je da je kombinacija fotonaponskih sustava i toplinskih crpki ekonomična i profitabilna investicija. The world is recognizing the importance of renewable energy sources, which is evident from the increase in newly installed capacities from year to year. In the previous year2021, as many as 315 GW of new renewable energy sources were installed, and this importance is also noticed by Republic of Croatia, which exceeds the average of the European Union in terms of the share of renewable energy sources in the final consumption of electricity. This work aims to determine the profitability of photovoltaic systems for powering heat pumps, in such a way that the existing gas heating of an object in the city of Slavonski Brod is replaced by a heat pump (air-water) powered by a photovoltaic system. The existing heating system represents the actual state of consumption, recalculated at current market prices, while the counsumption of the heat pump is estimated bassed on the energy consumed in the first case. The work concluded that it takes 11 years to pay back the investment at current market prices, both for energy sources and for the systems themselves. It was found that the combination of photovoltaic systems and heat pumps is an economical and profitable investment.