More information
Description
The building of Nursery No. 3 has basic EE measures in place and the implementation of the main activity of the project will increase the share of energy from renewable geothermal energy in the final energy consumption of the building and reduce the costs of conventional energy used for heating and cooling. The project foresees the construction of a geothermal heat pump installation for heating and cooling and the implementation of an energy consumption monitoring system. The partner is Norsk Energi, together with the municipality, will implement activities to exchange experiences and best practices in the field of sustainable energy supply and the use of RES. Target groups are 130 nursery children aged 1-3 years and their parents; 43 nursery staff; municipal employees working in the field of Energy efficiency-10. Project implementation will result in 174,7053 kWh/yr primary energy savings; 276.61 tCO2 emissions saved; 171.6 kW installed capacity for heating and cooling, including hot water supply; 234,414 kWh estimated annual energy production from RES.
Summary of project results
As a result of the implementation of the project, the building''s final energy consumption will be reduced, which will lead to a reduction in energy costs; increasing the energy efficiency of the building, as the energy class will become "C", this will lead to improved living comfort in the building and has direct social benefits for the children and staff in the nursery. Reduced CO2 emissions and an increased share of energy produced from renewable sources will lead not only to achieving goals in the municipal energy policy, but will also outline the path to achieving neutrality of the Municipality of Burgas in terms of climate change and CO2 emissions.
To cover the heating and cooling load of the building as well as the domestic hot water supply, two units with the following parameters were selected:-heating capacity 85,8 kW;-cooling capacity 66 kW. The same are used for heating, cooling and DHW of the building by using the constant temperature of the ground as a source of heat/cold through 22 pieces of closed /dry, not water-draining/ geothermal boreholes from +5ºC to +23ºC with a depth of 100 m to 120 m. The heat/cold recovered from the ground reaches a geothermal collector through a network of pipes, from which it is distributed/collected and delivered to the heat pump units. A characteristic feature of this type of units is that they have a high conversion/transformation coefficient, both in heating and cooling operation, as they are not affected by external weather conditions. The necessary additional technological equipment is located in the existing technical room in the basement of the building. A heating/air conditioning system with fan coil units for open ceiling and floor-wall installation is implemented for the building. The project includes an energy consumption monitoring system and includes the supply and installation of an ultrasonic heat/thermal meter that reads the heat and cold energy generated by the heat pump units, as well as installing control meters.
The construction of a heat pump installation using the geothermal energy of the earth''s subsurface for heating and cooling of the building of Nursery № 3 and for DHW supply will achieve the following indicators, which will contribute to the achievement of the indicators of the Program, namely: - Installed capacity for energy production from geothermal energy will increase by 171.6 kW; - Estimated production from geothermal energy will be increased by 234 414 kWh/year; -Projected annual CO2 emission reductions of 276.61 tCO2/year;-Project implementation supports the achievement of Bulgaria''s energy and climate targets of 27% share of renewable energy in gross final energy consumption by 2030 by harnessing existing geothermal energy potential. The objectives of the project are fully in line with the objectives of the procedure and the results achieved directly contribute to increasing the share of renewable energy in gross final energy consumption and achieving decarbonisation of the building stock in the municipality.
Summary of bilateral results
Improved bilateral cooperation with interested stakeholders in the field of energy efficiency to present good practices and future development of the city and the municipality in this regard.