engleski

Renewable energy integration using seawater source heat pump in the Old city of Dubrovnik

The integration of renewable energy sources, such as wind and solar power, indicate for additional flexibility in the power system, according to their intermittency. Renewable energy generation will play a major role in reducing the overall greenhouse gas emissions, being a part of a global response to the threat of climate change. Self- sufficient power system could be achieved adding the additional energy storages or additional sources of flexibility in the system. Heat sector stands out with the great potential in decarbonisation since it has a large share in the final energy consumption. Power-to-heat technologies may contribute to heat sector decarbonisation as well as the integration of renewables if they are sufficiently flexible. They are also shown to have good effects on the system costs. This work will analyse the potential of seawater heat pump system, in the Old city of Dubrovnik, for utilization of high electricity production from intermittent renewables. The Old City is selected because of its specific situation. The problem with the Old City is that a large number of the outdoor units in not well approved by UNESCO since the Old City is under the UNESCO World Heritage Centre. The results of the calculations based on hour time step showed that combination of wind and solar electricity production can cover 67% of thermal demand. Rest of the demand can be utilized using thermal or battery storage, which can provide additional flexibility to the power system. Results showed that the system based on the short-term time step requires higher needs for flexibility.

seawater source heat pumps ; renewable energy sources ; heating demand ; cooling demand ; smart energy systems

Promjena prezimena autorice s Šare u Falkoni 2015.