This paper presents an investigation of stagnation in solar collectors and the effects it will have on the collector loop. At a laboratory test stand at the Technical University of Denmark, a pressurized solar collector loop was designed to test different numbers of collectors and different designs of the pipes of the solar collector loop. During the investigation the pre-pressure of the expansion vessel and system filling pressure was changed. The investigations showed that a large pressurised expansion vessel will protect the collector loop from critically high temperatures as long as the solar collectors have a good emptying behaviour and the circulation pump is turned off during stagnation.
|Title of host publication||Pressure and temperature development in solar heating system during stagnation|
|Publication status||Published - 2010|
|Event||International Conference on Solar Heating, Cooling and Buildings - Graz, Austria|
Duration: 28 Sep 2010 → 1 Oct 2010
|Conference||International Conference on Solar Heating, Cooling and Buildings|
|Period||28/09/2010 → 01/10/2010|
- Stagnation, Solar collector loop