SMALL, MODULAR AND RENEWABLE DISTRICT HEATING COOLING GRIDS FOR COMMUNITIES IN SOUTH-EASTERN EUROPE

摘要

Small modular district heating/cooling grids can be fed by different heat sources, including solarrncollectors, biomass systems and surplus heat sources (e.g. heat from industrial processes or biogas plants that is notrnyet used). Especially the combination of solar heating and biomass heating is a very promising strategy for smallerrnrural communities due to its contribution to security of supply, price stability, local economic development, localrnemployment, etc. On the one hand, solar heating requires no fuel and on the other hand biomass heating can storernenergy and release it during winter when there is less solar heat available. Thereby, heat storage (buffer tanks forrnshort-term storage and seasonal tanks/basins for long-term storage) needs to be integrated. With increasing shares ofrnfluctuating renewable electricity production (PV, wind), the Power-to-Heat conversion through heat pumps canrnfurthermore help to balance the power grid. The objective of the CoolHeating project, funded by the EU’srnHorizon2020 programme, is to support the implementation of "small modular renewable heating and cooling grids"rnfor communities in South-Eastern Europe.