green house

green house - Term Definition analog controls use...

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Term: analog controls Definition: use proportioning thermostats to run amplifiers and electronic circuitry Term: computer controls Definition: use microprocessors to make complex judgments based on information from a number of sensors Term: computerized environmental management systems Definition: are accurate and can control all the automated systems together Term: energy curtains Definition: s are automated systems using fabrics that can insulate a greenhouse at night and shade the crops during the day Term: environmental controls Definition: are devices used to turn greenhouse systems on and off, including heating and cooling systems
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Term: fan-and-pad cooling system Definition: Cellulose or aspen pads at one end of the house are kept wet, while fans at the other end of the house pull outside air through the pads Term: fog system Definition: involves an atomizer that produces water vapor Term: hot-water heating system Definition: involves heating water in a boiler and pumping the hot water through pipes located in the greenhouse Term: infrared heating system Definition: produces heat energy that is absorbed by the plants, media, benches, and floor Term: polyethylene tubes Definition: attached to the units help distribute the airflow evenly
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