The Coolsun Triple-technology Approach to Reach High Solar Fractions for Space Heating, Space Cooling and Domestic Hot Water

Within the framework of the COOLSUN project a triple-technology approach to reach high solar fractions for space heating, space cooling and domestic hot water preparation is being developed. The three core components are a thermo fluid with a low environmental impact and a boiling point above 200 °C, a high efficient adsorption chiller, and an advanced controller. System simulations modelling the transient behaviour of the entire application, i.e. building, hot water preparation and space heating/cooling, show that for Mediterranean locations the solar fraction reaches values up to 100%; and even in Central Europe remarkable energy savings can be reached. The first prototype of the system is installed since spring 2013 in a building and monitored under real operation conditions.