It is getting cold in Sweden and Svångemåla. To be able to keep the little house warm I have installed two different kind of heaters. The first one is run purely by solar power. A panel generates electricity for a fan that forces hot air from the panel into the house. The panel manages to increase the temperature of the air to about 25 degrees C above the general air temperature when the sun is shining. Perfect to keep the house ventilated without using any energy from the grid but useless when it is cloudy or the sun is down. (www.solarventi.com)
Solarventi
The second heater is much more efficient but uses some electricity. It works, more or less, like a freezer but backwards, i.e. it takes warmth out of the surrounding air, increases it and transfers the heat to a heater inside the house. It is very efficient and one unit can easily keep the whole house warm and comfortable without too much noise.
So far, so good but the real test will be in the winter when the temperature is far below 0 C.
Air to air heat-pump
No comments:
Post a Comment