The use of solar combination systems for water heating and central heating backup makes a significant contribution to covering energy requirements. Primary energy is saved in the area of heat supply for buildings and the emission of climate-damaging emissions is reduced.
The "SolvisMax" solar condensing boiler with its storage-integrated condensing boiler represents the constructive combination of innovative solar technology and traditional heating technology. In a research project sponsored by the Deutsche Bundesstiftung Umwelt (DBU), Osnabrück, the efficiency of two systems was measured in a field test. Detailed investigations into the operating behavior were carried out as part of laboratory tests.
Both systems were installed in residential buildings (one and four-family houses) with low-energy house standards in the Braunschweig region. The evaluation of the measurement results from November 1998 to March 2000 showed problem-free and practical operating behavior for both systems with successful coordination between the various components of the device (stratified charging buffer cylinder with solar coupling, condensing boiler, hot water heat exchanger). The metrological monitoring of 44 other installed systems by Solvis led to comparable results.
A positive balance can be drawn from all of the tests carried out, which can be seen above all in the reduced system engineering costs, the increased energy efficiency and the high environmental compatibility of these systems.