During the course of the IR-Bau 2 project, we have added a laboratory room to our ECOLAR building. Here, we investigate various matters relating to IR heating. Especially when investigating different control strategies for optimising self-consumption and grid-supportiveness, it goes without saying that being able to use real electricity production from the in-house PV system on the roof is of huge benefit in our investigations.
After all, when using direct electric heating in particular, there are great advantages to be gained from both an ecological and economic standpoint if the degree of self-coverage provided by the PV system is maximised as much as possible by using efficient electricity production technology and intelligent control strategies. When it comes to "heating with electricity", many people tend to think of the negative example of night-time storage heaters from the 1950s and 1960s. However, you need to consider that the basic conditions for supplying heat to buildings have changed fundamentally in recent decades. Firstly, heat demand has been significantly reduced in recent years due to the regulations for better building insulation in new buildings. Secondly, the costs of local energy production on the building have also fallen enormously. Therefore, a low heating requirement is now coupled with cost-effective and local, renewable power generation. Therefore, especially for buildings with low heat turnover, it is interesting to consider what potential simple and cost-effective infrared heating systems have in supplying heat to buildings, especially in combination with local electricity generation via photovoltaics.
We have not included the connection of battery storage as a parameter as we are primarily concerned with heating and the storage sizes required for seasonal electricity storage are unfortunately still far too expensive. In order to improve grid-supportiveness, however, in this project we are currently focusing on thermal storage of solar surplus. However, anyone who wants to operate an electric car or powerful consumers using solar power and connects a battery to have power available for consumption later on certainly can't go wrong with this inverter.
EDITORIAL TEAM: What is the energy concept of the house? After getting the test arrangements set up, you started measuring technical events. Have you got any insight yet indicating trends in the areas you are focussing on?