Sometimes, a villain ends up being the hero, and not only in a suspense thriller! Take the incandescent bulb we grew up with. It has a poor repurtation when it comes to lighting efficiency. But as they say, it all boils down to perception! Look at the bulb as a heat bulb and it becomes an efficient device.
It can be used in passive houses to provide the very small amount of additional heating well-designed buildings require. It can also be used in combination with heat pumps to provide that required extra bit of heating during the coldest and darkest winter days. The devices are extremely cheap, easy to install, and they fit into any E27 socket. Moreover, they are totally scalable: you can install as many as you want anywhere in the house, and each of them can have a heating power ranging between 25 and 300 W.
Unlike heaters, these do not disturb the power quality on the grid nor do they transmit disturbing electro-magnetic waves. A German engineer has decided to capture this market!
So, would you say the bulb is a hero or villain??
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