TY - JOUR TI - Restoration and conversion to re-use of historic buildings incorporating increased energy efficiency: A case study - the Haybarn complex, Hilandar Monastery, Mount Athos AU - Ivanović-Šekularac Jelena A AU - Čikić Tovarović Jasna Lj AU - Šekularac Nenad D JN - Thermal Science PY - 2016 VL - 20 IS - 4 SP - 1363 EP - 1376 PT - Article AB - A proper approach to restoration of historic buildings is crucial for monumental heritage protection. The objective of the paper is to define a methodology for historic buildings restoration in order to increase energy efficiency and re-usability in accordance with modern standards. The main method used in the paper is the observation of historic buildings during their restoration and exploitation, analysis and evaluation of achieved results regarding energy efficiency and energy saving, through the examples of the buildings belonging to Hilandar Monastery, Mount Athos, in Greece. Mount Athos was inscribed on the UNESCO World Heritage List for its cultural and natural values. This case study discusses the abandoned and dilapidated historic buildings of the Haybarn Complex (Stable, Mulekeepers’ House and Haybarn), the achieved results regarding the restoration of these buildings, their energy efficiency and turning into the premises for occasional stays. The research results are recommendations for increasing energy efficiency while performing the restoration of historic buildings, so that these buildings could be re-used in a new way. The most significant contribution of the paper is the practical test of energy refurbishment of these historic buildings conducted using the principles and methods of energy efficiency, in compliance with conservation requirements and authenticity of historic buildings.