Energy efficient compact air heating system for single-family houses

The project develops a simple, low-cost, installation and service friendly energy efficient air heating system that covers the need for ventilation, heating and hot utility water by combining ventilation with heat recovery and a heat pump that delivers fresh air with and without heating regulated by the room level.

Low-energy bulding class. 1 or class. 2 is 10-20 % more expensive than BR 10 buildings. This results from the market wishes of traditionally shaping with new constructions and often complex installations as heat pumps and renewable energy systems. The low energy consumption makes the utilization of airborne room heating as a attractive low-cost alternative to traditional systems because the traditional ventilation system can be extended with the heating system functions so the ventialtion system is unnecessary.

The necessary extensive renovation of existing single-family houses include significant improvements of the building envelope such as isolating and efficient sealing, changes of the heat  source and partly og totally changing of the heating system and establishment of mechanical ventilation with heat recovery. In this connection will a extension of the mechanical ventialtion contribute with a better and more low-cost solution.

Heated air is not new in Denmark and is used in Passivhaus. More aspects have been problematic as missing heating due to the house dimensions and not room level as missing individual room regulation.

The project result is a new concept with system solutions, product portfolio and a dimensioning tool. Compact systems must secure temperature and volume regulation for each single room. By developing a device with cold and warm air and integrated mixture proportion that secures the desired temperature in each room as modulate injection unit that secures the desired air volume and optimal energy efficient comfort.