The first findings from construction II.
nZEB as an active element of the energy system. Cooperation between a 7.2 kWh rooftop PV system with a 26 kWh home battery and the energy supply network.
Current situation:
- It appears so far that the total yearly electricity consumption will be lower than expected despite the fact that this year's winter has been significantly subnormal as far as temperatures are concerned.
- Small alterations to system settings are still being carried out, though it is already clear from the results obtained to date that the intention to separate the real course of the building's consumption from the course of its consumption from the grid is completely realistic.
- Operation of the building has proved that the presented concept ensures that 100 % of the energy produced by the PV system is used within the building itself.
- It is clear from the results obtained so far that the system eliminates overflows into the network even in individual phases.
- It was proven during the summer period that it is excessive to use air conditioning under the given climatic conditions. If needed, controlled ventilation for intensive night airing is sufficient.
- On the other hand, in the winter months, the high flexibility of the radiant heating systems used can be seen. They react swiftly and efficiently to the current situation in each area of the building and make full use of heat gains (equipment, people, sunlight).
- The radiant heating system, together with controlled ventilation, provided suitable microclimatic conditions for all monitored parameters for the whole period.
Presentation in PDF file can be download here: First findings II.
