1. The European Commission, “Heating and cooling - European Commission,” 2018. [Online]. Available: https://ec.europa.eu/energy/en/topics/energy-efficiency/heating-and-cooling [Accessed: 08-Oct-2018].
2. Large-scale solar district heating plants in Danish smart thermal grid: developments and recent trends;Tian;Energy Convers Manage,2019
3. D’Antoni M, Fedrizzi R, Sparber W. “IEA - SHC Task 44 / HPP Annex 38 Solar and Heat Pump Systems - Industry Newsletter - Second issue,” 2012.
4. “IEA SHC || Task 60 || IEA SHC || Task 60.” [Online]. Available: http://task60.iea-shc.org/ [Accessed: 19-Oct-2019].
5. Energetic and financial evaluation of solar assisted heat pump space heating systems;Bellos;Energy Convers Manage,2016