Eternal Light Bulb: Daylight Tunnel
In this article I showed how you can make a light guide from a bottle. Make free daylight lighting for dark cabins or a country toilet. It turns out that some manufacturers have been offering industrial versions of about the same backlight for a long time.
Types of daylight tunnels. These structures are found in the west: these installations are installed in private houses in storerooms, wardrobes. In our climate, such a construction of an "eternal light bulb" will be appropriate on the roof inside a warehouse, garage, closed cold terrace.
Daylight tunnel diagram. This is a glass dome, through which light enters the light guide - a ventilation pipe (or corrugated pipe) with an internal reflective surface. And almost all the light goes into the room. They are especially effective in bright sunny weather.
Options with a corrugated pipe and from a ventilation pipe. The first option has a minimum thermal conductivity of the case, in contrast to a tunnel made of metal ventilation.
To save energy in buildings, installations are installed in offices and dark corridors without windows in southern countries. For our latitudes and climate: an option either for summer cottages, or for garages and basements. In our climate in the house, a pipe or corrugation can freeze over in frosts. Even the thin foil of the corrugated tube is a cold bridge.
If you liked this solution and there is a need to mount it somewhere in your buildings, then such an “eternal light bulb” can be assembled from the components yourself. Moreover, the cost for a daylight tunnel is somewhat cosmic: from 14 to 23 thousand. rub.
Although, the cost is around a thousand rubles
The most difficult thing is to find a dome made of thick transparent plastic of the required diameter. These are used in roof skylights. But unlike the daylight tunnel, only direct sunlight passes through them. You can also try using a flat sheet of clear plastic.
In general, due to the cost of the daylight tunnel, the complexity of installation through the roof and the impossibility of using it in cold climates, the design did not receive widespread acceptance. Although, there is nothing complicated about it. Or maybe it is the producers' appetites and the exchange rate do not allow using the “eternal light bulb” in our country? But who is preventing the establishment of production within the country? After all, energy-saving technologies are so fashionable now ...
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Photos are taken from open sources, from Yandex. Pictures
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