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Stanko Shtrakov 1 , Milena Batova 2
1 - South - West University “Neofit Rilski”, Dept for Alternative Energy Sources, 66 Ivan Mihailov Str., 2700 - Blagoevgrad, BULGARIA, Tel.: +(359 2) - 263216; E-mail: firstname.lastname@example.org
2 -University of Architecture, Civil Engineering and Geodesy, Sofia
E-mail: MBATOVA_FAR@UACG.BG email@example.com
Reducing energy consumption for heating purposes in buildings by means of elements to capture solar energy, for climatic conditions in Bulgaria , has been analyzed in this work. A reference single-family house has been considered for calculation and analysis of energy balance and solar energy contribution. Building simulation, from the point of view of calculating energy consumption for heating, was one of the main tools for presented study. Different passive concepts were studied by mathematical modeling, and the results of numerical experiments were compared with the corresponding results obtained from TRANSYS computer simulation model. We consider as the functional unit a whole building, which is assumed to be comfortable and healthy for occupants. Hot water supply in houses was analyzed by simulation model for solar installations, and the results were grouped for three solar zones in Bulgaria .