INNOVATION POSSIBILITIES OF SOLAR DISTRICT HEATING SYSTEMS WITH SEASONAL HEAT STORAGE

In the solar district heating systems based on a seasonal storage the proportion of the utilized solar energy can reach 50-70 %. This systems are in the initial phase of the research and development but some experiences from more demonstration projects are already available. Seasonal storage is possibility in the development a new generation of solar and biomass based combined systems which can be a transmission between the biomass based solar supported individual heat production and the biomass supported solar district heating. Research and development of that systems are reasonable in Slovakia because of the total lack of the experiences. On this activity participate a work team on the Faculty of Civil Engineering of Technical University of Kosice too. Starting from the experiences of the recently functioning district heating systems based on seasonal heat storage its research is focused to innovation of this systems.