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  2. Greenhouse - Wikipedia

    en.wikipedia.org/wiki/Greenhouse

    The terms greenhouse, glasshouse, and hothouse are often used interchangeably to refer to buildings used for cultivating plants. The specific term used depends on the material and heating system used in the building. Nowadays, greenhouses are more commonly constructed with a variety of materials, such as wood and polyethylene plastic. [2]

  3. Plasticulture - Wikipedia

    en.wikipedia.org/wiki/Plasticulture

    A greenhouse is a large structure in which it is possible to stand and work with automated ventilation. High tunnels are hoop houses, manually ventilated by rolling up the sides. Greenhouse and high tunnel films are usually within the parameters of 80-220μm thick and 20m wide, and have a life span between 6–45 months dependent on several ...

  4. Twinwall plastic - Wikipedia

    en.wikipedia.org/wiki/Twinwall_plastic

    The warm, stagnant air present within the twinwall cells can present problems. Algae and bacterial growth can be incubated inside these cells, resulting in a decrease in optical clarity, reducing the efficiency of the greenhouse. [8] Cleaning these growths can be difficult because of the inability to use many solvents with polymer-based glazing.

  5. Cold frame - Wikipedia

    en.wikipedia.org/wiki/Cold_frame

    Cold frame construction is a common home or farm building project, although kits and commercial systems are available. 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.

  6. Polyvinyl chloride - Wikipedia

    en.wikipedia.org/wiki/Polyvinyl_chloride

    In a fire, PVC can form hydrogen chloride fumes; the chlorine serves to scavenge free radicals, making PVC-coated wires fire retardant. While hydrogen chloride fumes can also pose a health hazard in their own right, it dissolves in moisture and breaks down onto surfaces, particularly in areas where the air is cool enough to breathe, so would ...

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