Theoretical and experimental investigations of small SDHW systems based on so-called smart solar tanks are presented. A smart solar tank is a hot water tank in which the domestic water can both be heated by solar collectors and by an auxiliary energy supply system. The auxiliary energy supply system heats up the hot water tank from the top and the water volume heated by the auxiliary energy supply system is fitted to the hot water consumption and consumption pattern. In periods with a large hot water demand the volume is large, in periods with a small hot water demand the volume is small. The investigations showed that the yearly thermal performance of small SDHW systems can be increased by up to about 30 % if a smart solar tank is used instead of a traditional solar combi tank. The thermal increase is strongly influenced by the hot water consumption and consumption pattern. Recommendations for future development of smart solar tanks are given.
|Title of host publication||DEVELOPMENT OF A SMART SOLAR TANK|
|Publication status||Published - 1999|
|Event||ISES 1999 Solar World Congress: Solar is renewable - Jerusalem, Israel|
Duration: 4 Jul 1999 → 9 Jul 1999
|Conference||ISES 1999 Solar World Congress|
|Period||04/07/1999 → 09/07/1999|