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Description
Geothermal potential of Vukovar area was confirmed by seven wells in the immediate vicinity of the city of Vukovar, which were drilled between 1956 and 1958 for oil and gas exploration, and in which maximum temperatures ranging from 42°C to 82°C were measured.
The project of exploration and exploitation of geothermal water aims to create a technological basis for the application of RES in heating the city of Vukovar and connected settlements so that the heat of water drawn from geothermal aquifers is used to heat circulating water in the existing district heating system. Before reinjecting the water into the aquifer, remaining heat is used to heat the greenhouse. Solar energy use is also planned by installing photovoltaic panels in the area around exploitation and injection wells and on the roofs of buildings where the equipment for the geothermal system will be located; produced electricity will be used for internal consumption (lighting, pumps, ventilation, etc.), and any surplus electricity will be handed over to the electricity grid.
By replacing the current consumption of fossil fuels and biomass in the district heating system by using geothermal energy, annual CO2 emissions would be reduced by 4452.3 t.
The City of Vukovar will use the funds from this Program to finance the preparation of technical documentation necessary for exploration which will confirm the reserves of geothermal water and assure the exploitation permit.
It is expected that the exploitation will achieve:
• total thermal power of 5.07 MW, of which 3.58 MW for district heating and 1.49 MW for greenhouse heating;
• total annual heat production of 29,605 MWh, of which 20,898 MWh for district heating and 8707 MWh for greenhouse heating;
• complete replacement of the use of fossil fuels in the district heating of Vukovar by geothermal energy;
• possibility of heating greenhouses with a total area of 5.6 hectares;
• total avoided CO2 emissions of 6519 t/year.