Rehabilitation project of an apartment building in Belgrade, Serbia

As a part of a scientific project conducted at the Faculty of Architecture University of Belgrade a detailed survey of building fund has been made and a typical 1950?s building was chosen as a demonstration project for the energy conscious renovation and retrofit procedure. Rehabilitation has been done in three main phases: detailed analysis and inspection of present state based on available project documentation, on site inspection, thermography, as well as interviews with tenants. In this phase strategies for reconstructions were analyzed and evaluated; first phase of rehabilitation mainly concerned improvement of performance of envelope (fa?ade, windows) with addition of an attic level;. second phase maximizes performance of building using various architectural and technical methods. Addition of new volumes (glazed loggias, and partly double skin fa?ades), heat recuperating units, and hot water collectors with redefinition of heating system was the main objectives. For both phases techno-economical analyses were made optimizing possible thermal performance gains and used technology in accordance with economic potential and pay-back period. Also a detailed procedure algorithm was developed in order to give guidelines for future projects of this type.