24Th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, Ecos 2011, Date: 4 July 2011 through 7 July 2011, Location: Novi Sad, Sponsors: Daikin;Elektroprivreda Srbije;et al.;KnaufInsulation;Premogovnik;UNESCO Venice Office Regional Bureau Sci. Culture Europe