Abstract
The high share of energy consumption of the residential sector and the low renovation rate of existing buildings move through the need of finding solutions that facilitate the retrofit process. Common heating and cooling systems are often not adequate to the building as consequence energy plant operation is not efficient and running costs are high, or renovation works result intrusive and tenants or dwelling owners obstruct their execution. The here presented study investigates retrofit solutions packages applied to different multi-family house typologies located through Europe. Intervention on the envelope follows the actual national minimum requirements for energy efficiency, efficient heating and cooling systems are recommended for the different building typologies and renewable energies technologies are considered for contributing to the reduction of energy consumption. Energy performance of the retrofit packages, energy savings and running costs are assessed through dynamic simulations for all the studied cases