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writing:winter_greenhouses [2025/12/04 03:17] – JacobCoffinWriteswriting:winter_greenhouses [2026/01/02 15:34] (current) – JacobCoffinWrites
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   * For additional light, low voltage electric lamps (perhaps using salvaged headlights) could do a lot to extend the short daylight hours. Alternatively, [[solar_concentrators|Solar Tubes and Fiberoptic Daylighting Systems]] won't extend the length of the day, but they will capture additional sunlight and redirect it into the greenhouse. Solar tubes are simpler to set up and maintain but don't reach as far, Fiberoptic Daylighting Systems are more mechanically complex but can reach further and capture more light. Either may be useful if the greenhouse isn't sited as optimally as it could be or just needs more light.    * For additional light, low voltage electric lamps (perhaps using salvaged headlights) could do a lot to extend the short daylight hours. Alternatively, [[solar_concentrators|Solar Tubes and Fiberoptic Daylighting Systems]] won't extend the length of the day, but they will capture additional sunlight and redirect it into the greenhouse. Solar tubes are simpler to set up and maintain but don't reach as far, Fiberoptic Daylighting Systems are more mechanically complex but can reach further and capture more light. Either may be useful if the greenhouse isn't sited as optimally as it could be or just needs more light. 
     * Some of these systems have been tested for indoor farming - could the basic concept of sheltering the growing space into the earth be taken even further and end with a greenhouse entirely underground, with just ventilation and light capture systems on the surface?     * Some of these systems have been tested for indoor farming - could the basic concept of sheltering the growing space into the earth be taken even further and end with a greenhouse entirely underground, with just ventilation and light capture systems on the surface?
 +  * There are [[https://smallfarms.cornell.edu/2011/10/soap-bubbles-to-insulate-greenhouses-a-new-approach-to-energy-conservation/|systems for adding temporary insulation between layers of greenhouse plastic by forcing in soap bubbles]], it might be a bit too high-tech and fiddly for some settings but it might be a great fit for others.