This enables precise recording according to the system and load groups and makes it possible to assess the user impacts.
This is intended to achieve a solar coverage of at least 65 per cent and an annual primary energy requirement of 7 k Wh/m², which is about 70 per cent less than the total primary energy requirement of typical passive houses.Thermo-active building systems (TABS) are used to transfer heat to the rooms. Welche dates mögen frauen These can also be optionally used in summer via a borehole heat exchanger for cooling purposes to ensure a comfortable indoor environment. The buildings each have a solar thermal system (46 m²) with a long-term thermal storage tank (9.12 m³).The power supply is ensured by a photovoltaic system (8.4 k Wp) and a battery storage unit (lead-gel battery, 58 k Wh).The buildings' respective total electricity requirement for both types of usage amounts to about 2,000 k Wh (without electromobility).
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This is aimed at determining a detailed building energy balance and, where necessary, identifying necessary optimisation measures to the building concept, building technology or operational management.For this purpose extensive measuring technology was installed in both buildings.Numerous electro-energy meters are available for balancing the electricity in the standalone network. These meters record the electricity requirements with a high temporal resolution, including to some extent for individual end loads.Numerous heat meters (oscillation beam principle) as well as humidity and temperature sensors were also installed to balance the heat supply.
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Additionally installed resistance thermometers (PT100) enable a detailed evaluation of the heat flows.
In terms of the heating provision, the solar share of the heat supply was about 71% (2014) and 72-73% (2015).
Here the target of more than 65% was clearly exceeded.
For two different utilisation profiles, it can be shown that high solar coverage levels are possible, particularly for the power and heat provision.
The buildings have a very low heating requirement, which is largely covered by generously dimensioned solar collectors and heat storage units. A photovoltaic system in combination with a battery storage unit ensures almost 100 per cent solar power provision.