[[1] Directive 2010/31/EU of the European Parliament and of the Council of 19 May 2010 on the energy performance of buildings. Official Journal of the European Union 2010:L153/13.]Search in Google Scholar
[[2] IEA. Policy Pathways Brief: Modernising Building Energy Codes 2017. International Energy Agency, 2017.]Search in Google Scholar
[[3] Directive (EU) 2018/844 of the European Parliament and of the Council of 30 May 2018 amending Directive 2010/31/EU on the energy performance of buildings and Directive 2012/27/EU on energy efficiency, PE/4/2018/REV/1. Available: http://data.europa.eu/eli/dir/2018/844/oj]Search in Google Scholar
[[4] Passer A., et al. The impact of future scenarios on building refurbishment strategies towards plus energy buildings. Energy and Buildings 2016:124:153–163. https://doi.org/10.1016/j.enbuild.2016.04.00810.1016/j.enbuild.2016.04.008]Search in Google Scholar
[[5] Attia S., et al. Overview and future challenges of nearly zero energy buildings (nZEB) design in Southern Europe. Energy and Buildings 2017:155:439–458. https://doi.org/10.1016/j.enbuild.2017.09.04310.1016/j.enbuild.2017.09.043]Search in Google Scholar
[[6] Bot K., et al. Energy performance of buildings with on-site energy generation and storage – An integrated assessment using dynamic simulation. Journal of Building Engineering 2019:24:100769. https://doi.org/10.1016/j.jobe.2019.10076910.1016/j.jobe.2019.100769]Search in Google Scholar
[[7] Krese G., Koželj R., Butala V., Stritih U. Thermochemical seasonal solar energy storage for heating and cooling of buildings. Energy and Buildings 2018:164:239–253. https://doi.org/10.1016/j.enbuild.2017.12.05710.1016/j.enbuild.2017.12.057]Search in Google Scholar
[[8] Kasaeian A., et al. Experimental studies on the applications of PCMs and nano-PCMs in buildings: A critical review. Energy and Buildings 2017:154:96–112. https://doi.org/10.1016/j.enbuild.2017.08.03710.1016/j.enbuild.2017.08.037]Search in Google Scholar
[[9] Al-Maghalseh M., Mahkamov K. Methods of heat transfer intensification in PCM thermal storage systems: Review paper. Renewable and Sustainable Energy Reviews 2018:92:62–94. https://doi.org/10.1016/j.rser.2018.04.06410.1016/j.rser.2018.04.064]Search in Google Scholar
[[10] Choi D. H., Lee J., Hong H., Kang Y. T. Thermal conductivity and heat transfer performance enhancement of phase change materials (PCM) containing carbon additives for heat storage application. International Journal of Refrigeration 2014:42:112–120. https://doi.org/10.1016/j.ijrefrig.2014.02.00410.1016/j.ijrefrig.2014.02.004]Search in Google Scholar
[[11] Fan L., Khodadadi J. M. Thermal conductivity enhancement of phase change materials for thermal energy storage: A review. Renewable and Sustainable Energy Reviews 2011:15(1):24–46. https://doi.org/10.1016/j.rser.2010.08.00710.1016/j.rser.2010.08.007]Search in Google Scholar
[[12] Vanaga R., et al. Solar facade module for nearly zero energy building. Energy 2018:157:1025–1034. https://doi.org/10.1016/j.energy.2018.04.16710.1016/j.energy.2018.04.167]Search in Google Scholar
[[13] Mols T., et al. Experimental study of small-scale passive solar wall module with phase change material and Fresnel lens. Energy Procedia 2018:147:467–473. https://doi.org/10.1016/j.egypro.2018.07.04810.1016/j.egypro.2018.07.048]Search in Google Scholar
[[14] Sirmelis R., Vanaga R., Freimanis R., Blumberga A., Solar Facade Module for Nearly Zero Energy Building. Optimization Strategies. Environmental and Climate Technologies 201:23(3):170–181. https://doi.org/10.2478/rtuect-2019-008710.2478/rtuect-2019-0087]Search in Google Scholar
[[15] Edmund Optics [Online]. [Accessed 20.03.2020]. Available: https://www.edmundoptics.eu/p/5quot-x-5quot-4quot-focal-length-fresnel-lens/6959]Search in Google Scholar
[[16] Rubitherm Technologies GmbH [Online]. [Accessed 20.03.2020]. Available: https://www.rubitherm.eu/media/products/datasheets/Techdata_-RT21HC_EN_06082018.PDF]Search in Google Scholar