Greenhouse

A greenhouse (also called a glasshouse) is a building in which plants are grown. These structures range in size from small sheds to industrial-sized buildings. A miniature greenhouse is known as a cold frame.

A greenhouse is a structural building with different types of covering materials, such as a glass or plastic roof and frequently glass or plastic walls; it heats up because incoming visible solar radiation (for which the glass is transparent) from the sun is absorbed by plants, soil, and other things inside the building. Air warmed by the heat from hot interior surfaces is retained in the building by the roof and wall. In addition, the warmed structures and plants inside the greenhouse re-radiate some of their thermal energy in the infrared spectrum, to which glass is partly opaque, so some of this energy is also trapped inside the glasshouse. However, this latter process is a minor player compared with the former (convective) process. Thus, the primary heating mechanism of a greenhouse is convection. This can be demonstrated by opening a small window near the roof of a greenhouse: the temperature drops considerably. This principle is the basis of the autovent automatic cooling system. Thus, the glass used for a greenhouse works as a barrier to air flow, and its effect is to trap energy within the greenhouse. The air that is warmed near the ground is prevented from rising indefinitely and flowing away.

Although heat loss due to thermal conduction through the glass and other building materials occurs, net energy (and therefore temperature) increases inside the greenhouse.

Read more about Greenhouse:  Types, Uses, History, Netherlands, Greenhouse Ventilation, Greenhouse Manufacturers

Other articles related to "greenhouse":

Solar Radiation Management
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La Serre Amazonienne
... La Serre Amazonienne is a tropical greenhouse representing the Amazon environment ... The greenhouse opened in 2007 as part of the Montpellier Zoo with a footprint of about 2,600 m2 ... The greenhouse now contains more than 500 animals and 8,000 plants representing 300 species ...
Seawater Greenhouse - History
... The seawater greenhouse concept was first researched and developed in 1991 by Charlie Paton's company Light Works Ltd, now Seawater Greenhouse Ltd ... A prototype seawater greenhouse was assembled in the UK and constructed on the site in Tenerife ... The design was first tested and validated through a second seawater greenhouse that was constructed on Al-Aryam Island, Abu Dhabi, United Arab Emirates in 2000 ...
Clean Air Act (United States) - Application To Greenhouse Gas Emissions
... EPA began regulating greenhouse gases (GHGs) from mobile and stationary sources of air pollution under the Clean Air Act for the first time on January 2, 2011 ... See Regulation of Greenhouse Gases Under the Clean Air Act ... Below is a table for the sources of greenhouse gases, taken from data in 2008 ...
Greenhouse Manufacturers
... Lord Burnham – founded in 1849, the company was acquired by the Under Glass Manufacturing Corporation in 1989, which continues to manufacture Lord Burnham brand greenhouses and solariums. ...

Famous quotes containing the word greenhouse:

    There is not enough exercise in this way of life. I try to make up by active gymnastics before I dress when I get up, by walking rapidly in the lower hall and the greenhouse after each meal for perhaps five to ten minutes, and a good hand rubbing before going to bed. I eat moderately; drink one cup of coffee at breakfast and one cup of tea at lunch and no other stimulant. My health is now, and usually, excellent.
    Rutherford Birchard Hayes (1822–1893)