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Cooling is typically done by opening windows in the greenhouse when it gets too warm for the plants inside it. This can be done manually, or in an automated manner. Window actuators can open windows due to temperature difference or can be opened by electronic controllers. Electronic controllers are often used to monitor the temperature and ...
The greenhouse was closed for extensive renovations in 1988 and reopened in March 1990. [3] The original Plexiglas glazing was replaced with 2,425 panes of heat-strengthened glass (containing a plastic interlayer called Saflex) and coated with a low-emissivity film. In 2010, the Botanical Garden celebrated the 50th anniversary of the Climatron. [4]
A traditional plan makes use of old glass windows: a wooden frame is built, about one to two feet tall, and the window placed on top. The roof is often sloped towards the winter sun to capture more light, and to improve runoff of water, and hinged for easy access. Clear plastic, rigid or sheeting, can be used in place of glass.
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Cold frames are found in home gardens and in vegetable farming. They are most often used for growing seedlings that are later transplanted into open ground. A typical cold frame has traditionally been a rectangle of framing lumber with an old window placed over it. Since the advent of plastic sheeting, it is often used instead of old windows.
Preservation of citrus and other tender plants started out as crudely as building a pergola over potted plants or beds, or simply moving potted plants indoors for the cold season. Known in Italy as limonaia, these early structures employed wood panels or open galleries to protect from the cold.
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