The thermal performance of solar heating systems is strongly influenced by the thermal stratification in the heat storage. The higher the degree of thermal stratification is, the higher the thermal performance of the solar heating systems. Thermal stratification in water storages can be achieved in different ways. For instance, water heated by the solar collectors or water returning from the heating system can enter the water storage through stratification inlet devices in such a way that the water enters the tank in a level, where the tank temperature is the same as the temperature of the entering water. In this paper investigations of a number of different fabric stratification pipes are presented and compared to a non flexible inlet stratifier. Additional, detailed investigations of the flow structure close to two fabric stratification pipes are presented for one set of operating conditions by means of the optical PIV (Particle Image Velocimetry) method.
|Title of host publication||Proceedings of the Solar World Congress 2005 : Bringing Water to the World|
|Publisher||International Solar Energy Society|
|Publication status||Published - 2005|
|Event||ISES 2005 Solar World Congress: Bringing Water to the World - Orlando, FL, United States|
Duration: 6 Aug 2005 → 12 Aug 2005
|Conference||ISES 2005 Solar World Congress|
|Period||06/08/2005 → 12/08/2005|