The heatingsystem in a sun-house
The annual heat demand for space heating and domestic hot water is covered in a sun-house to more than 50% with a solar thermal system. Reheating of the buffer is also renewable, for example, a waterbearing fireplace. A low temperature heating system provides with its space-wise controllable heat supply for high comfort with low flow temperatures.
Note: Minimizing the flow temperatures can cause up to 2% energy savings!
Important for a high heating comfort and solar output is a memory management with good temperature stratification in the upper part of the accumulator ready to stand on hot water temperature level. Below is the memory to be so good and long cooled as possible so that the solar system operates at low temperature and thus achieves high efficiency.