The cost efficient Innogie system covers the annual need of heat and electricity without impacting negatively on the aesthetics of the house.
The system's main component consists of a roofing solution also functioning as a large thermal solar absorber. By using the whole rooftop as absorber large amounts of heat is generated throughout the year. Firstly this heat is used to cover the annual heating needs of the house and secondly the large amount of surplus heat generated during the summer is utilized to generate electricity in a so-called HP/ORC module. The same module can be used during winter as an efficient heat pump which simplifies the complexity of the total system radically compared to competitive products.
To clarify the functionality of the system three different scenarios are explained hereunder:
Summer (fluid temperatur: > 75 degrees Celsius)
When the fluid outlet from the roof exceeds a temperature of 75 degrees Celsius the system starts to generate electricity based on the temperature difference between the roof and a small geothermal circuit. By dissipating heat in the ground during this process heat is also stored in the ground for use in the wintertime. Electricity produced is sold to the electricity supplier (feed-in tarif) or sent back through the grid for later use (net metering) depending on applicable legislation. The Innogie system has no local electricity accumulation.
Autumn/Spring (fluid temperature: 55-75 degrees Celsius)
During these conditions the Innogie system will ensure sufficient heating for the house without the need of the heat pump function. In this scenario the system functions as a traditional solar thermal system. When the heat storage in the house is sufficiently heated the surplus heat is directed to the geothermal circuit for use in the wintertime.
Winter (fluid temperature: < 55 degrees Celsius)
To ensure sufficient heat all year the HP/ORC module can change its functionality to work as an efficient heat pump when needed. By default the Innogie system will use the roof as heat source in connection with the heat pump. During a tough winter with several weeks without sunshine the Innogie system will automatically switch to use the geothermal circuit as heat source.