Optimization of modular district heating system for selected public buildings and neighborhoods in Visoko with mechanical structure optimization of solar collector holders — The CoolHeating project

Small modular district heating/cooling grids can be fed by different heat sources, including from solar collectors, biomass systems and geothermal pumps. The objective of the CoolHeating project is to support the implementation of small modular renewable heating grids for communities in South-Eastern Europe, including the town of Visoko as one of five target regions. In this work, an analysis was performed for implementation of small modular district heating/cooling system in Visoko, covering several public buildings and few neighborhoods in north-western part of town. Combination of different renewable energy sources were analyzed leading to an optimal and a very promising energy supply strategy due to its contribution to security of supply, financial stability, local economic development, local employment, etc. Possible financial savings for heating of 38% compared to current financial needs are determined. Structure optimization of solar collector holders was also performed, taking into account external influence, enabling savings in the structure material. These activities have numerous benefits, contributing to considerable annual GHG emission reduction, total annual costs savings, therefore reducing the rate of expenditures of public money, better living quality, creation of “green jobs”, increased awareness and understanding for energy efficiency and its resulting benefits.