REHVA was actively present during the latest edition of the Mostra Convegno Expocomfort, Milan/Italy – 18-21 March 2014.

This year during the exhibition, REHVA organised in collaboration with AiCARR a seminar on ‘Towards nearly zero retrofitted buildings’, and prepared and distributed with the collaboration of Eurovent Certita Certification a special issue of the REHVA European HVAC Journal.  The topic of designing and constructing nearly zero energy buildings has been firstly addressed to new buildings. Nevertheless, the big challenge for the European Countries is to focus in increasing the energy performance of the existing building stock. As highlighted by several European projects and researches, the energy properties of buildings are really poor and high potentials of energy savings can be achieved by energy renovation actions. In this scenario, it is important to analyses which are the real strategies to develop and the proper technologies to set for retrofitting existing building up to the target of “nearly zero energy”, taking into account the suitable trade-off between energy and economical goals as introduced by the “cost optimality approach”. To address this issue, REHVA in collaboration with AiCARR organised a seminar on Wednesday March 19 at the Centro Congressi Stella Polare on the topic of nearly zero retrofitted buildings. AiCARR president elect, Prof. Livio de Santoli welcomed all the seminar participants. Prof. Livio Mazzarella (co-chair REHVA’s Technical & Research Committee) presented the nZEB concept for Mediterranean Countries. Stefano Corgnati (vice president of REHVA) talked about retrofitted N-ZEB, challenging between energy and economic targets.  Prof. Zoltan Magyar (REHVA treasurer) discussed about the energy retrofitting of panel residential buildings for nearly zero energy buildings in Hungary. Mr Ioan Dobosi (vice president of REHVA) presented the status of implementation of the European Directives for Energy Efficiency in Romania. He also presented some technical solutions for transforming an existing residential building into a nearly zero energy building (nZEB). Mr Enrico Fabrizio presented some case studies on the role of energy simulation towards nZEB. The Seminar ended with the presentation of the certification of multi-energy systems by Mr François-Xavier Ball. The Seminar was well attended by more than 120 participants.
All the presentations are available to download online.

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