Transition towards university campus carbon neutrality by connecting to city district heating network

The campus of Tallinn University Technology consists 26 buildings with a total annual heat demand approximately 20 GWh. A local natural gas-fired boiler provides annually 13 GWh heating to 12 in the and 14 are connected district system. This paper analyses possibilities replacing gas heating. Two systems were modelled using EnergyPRO software compared reference system network: connection an existing high-temperature network low-temperature energy cascade. All three two different price scenarios. results analysed from perspective university entire city’s cascade will reduce carbon dioxide emissions by 955 tonnes CO2. conventional would emission 765 tons District also lead primary savings supporting university’s efforts towards achieving its sustainable development goals. utilising return water reduces losses increases efficiency electricity production when separate or