ABSTRACT
In Hungary there are approximately 4 millions of households. Most of them are in buildings with low thermal properties. About 42% of dwellings/houses are equipped with central heating systems, but only a few are provided with individual automatic control tools. At most of them only the manual control is possible. Proper thermal rehabilitation of the buildings will lead to a significant reduction of the energy need for heating. Based on a cost analysis, for given conditions, the optimal insulation thickness can be established. The paper presents a complex energy analysis of the optimal forward temperature depending on the insulation level of the building and distribution pipes taking into account different types of central control systems.
