[1] European Parliament Council of the European Union. Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012 on energy efficiency, amending Directives 2009/125/EC and 2010/30/EU and repealing Directives 2004/8/EC and 2006/32/EC Text with EEA relevance. Official journal of the European Union 2012:L 315/1.
[2] European Parliament Council of the European Union. Directive 2012/27/EU of the European Parliament and of the Council of 25 October 2012. Official journal of the European Union. https://doi:10.3000/19770677.L_2012.315.eng
[5] Feofilovs M., Pakere I., Romagnoli F. Life Cycle Assessment of Different Low-Temperature District Heating Development Scenarios: A Case Study of Municipality in Latvia. Environmental and Climate Technologies 2019:23(2):272–290. https://doi.org/10.2478/rtuect-2019-006810.2478/rtuect-2019-0068
[7] Polikarpova I., Lauka D., Blumberga D., Vigants E. Multi - Criteria Analysis to Select Renewable Energy Solution for District Heating System. Environmental and Climate Technologies 2019:23(3):101–109. https://doi.org/10.2478/rtuect-2019-008210.2478/rtuect-2019-0082
[8] Pieper H., Volkova A., Mašatin V. Large-scale heat pump integration model: A case study of Tallinn district heating. 4th Int. Conf. Smart Energy Syst. 4th Gener. Dist. Heating, Aalborg, Denmark, 2018.
[10] Karkaba H., Habchi C., Al Takash A. Numerical Analysis of Different Indoor Heating Methods. Proceeding of the 4th International Conference Advanced Computer Tools Engineering Applications (ACTEA) 2019:1–7. https://doi.org/10.1109/ACTEA.2019.885107510.1109/ACTEA.2019.8851075
[16] Galindo Fernández M., et al. Efficient district heating and cooling systems in the EU Case studies analysis, replicable key success factors and potential policy implications. Luxembourg: Publications Office of the European Union, 2016. https://doi.org/10.2760/371045
[24] Paraschiv L. S., Serban A., Paraschiv S. Calculation of combustion air required for burning solid fuels (coal / biomass / solid waste) and analysis of flue gas composition. Energy Reports 2019:6:36–45. https://doi.org/10.1016/j.egyr.2019.10.01610.1016/j.egyr.2019.10.016
[26] Li P.W., Chyang C.S. A comprehensive study on NOx emission and fuel nitrogen conversion of solid biomass in bubbling fluidized beds under staged combustion. Journal of the Energy Institute 2019:93:324–334. https://doi.org/10.1016/j.joei.2019.02.00710.1016/j.joei.2019.02.007
[29] Colburn A. P., Hougen O. A. Design of Cooler Condensers for Mixtures of Vapors with Noncondensing Gases. Industrial Engineering and Chemistry 1934:26:1178–1182. https://doi.org/10.1021/ie50299a01110.1021/ie50299a011
[32] Käär H., et al. Soojus- ja massilevi. I osa. Põhikursus. (Heat and mass transfer. Part I. Basic course.) Tallinn: Tallinn University of Technology, 1998. (in Estonian)