[net-gold] INDOOR GARDENING : GARDENING: Urban Gardening, Part 2: Greenhouse Technology
- From: "David P. Dillard" <jwne@xxxxxxxxxx>
- To: Net-Gold <Net-Gold@xxxxxxxxxxxxxxx>, Temple University Net-Gold Archive <net-gold@xxxxxxxxxxxxxxxxxxx>, Temple Gold Discussion Group <TEMPLE-GOLD@xxxxxxxxxxxxxxxxxxx>, Net-Gold <net-gold@xxxxxxxxxxxxxxxx>, Sean Grigsby <myarchives1@xxxxxxxxxxxxxxx>, Educator Gold <Educator-Gold@xxxxxxxxxxxxxxx>, Educator Gold <Educator-Gold@xxxxxxxxxxxxxxxx>, K12AdminLIFE <K12AdminLIFE@xxxxxxxxxxxxxxx>, Net-Platinum <net-platinum@xxxxxxxxxxxxxxx>, NetGold <netgold@xxxxxxxxxxxxxxx>, "Net-Gold @ Nabble" <ml-node+3172864-337556105@xxxxxxxxxxxxx>, K-12ADMINLIFE <K12ADMIN@xxxxxxxxxxxxxxxxxxx>, MediaMentor <mediamentor@xxxxxxxxxxxxxxx>, Digital Divide Diversity MLS <mls-digitaldivide@xxxxxxxxxxxxxxx>, net-gold@xxxxxxxxxxxxx
- Date: Sun, 4 Jul 2010 12:51:45 -0400 (EDT)
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INDOOR GARDENING :
GARDENING:
Urban Gardening, Part 2: Greenhouse Technology
Urban Gardening, Part 2: Greenhouse Technology
By Ned Madden
TechNewsWorld
06/29/10 5:00 AM PT
<http://www.technewsworld.com/story/
Urban-Gardening-Part-2-Greenhouse-Technology-70310.html>
A shorter URL for the above link:
<http://tinyurl.com/28uazrt>
Those who aim to grow plants and vegetables in a contained,
environmentally controlled greenhouse have a lot of high tech tools at
their disposal. Advanced materials, efficient lighting techniques, green
energy production and computer software all come together to make indoor
gardening take root.
Part 1 of this series explores the practical aspects of locating
greenhouses in urban environments.
These are not your grandpa's greenhouses.
Anyone familiar with common plastic-enclosed passive solar structures
designed simply to hold plants over cold seasons or grow flowers and
less-hardy fruits might be surprised about how these humble buildings have
transformed into today's dynamic hydroponic "bio-structures."
The modern high-tech greenhouse represents the timely convergence of some
of the most sophisticated scientific know-how available from a variety of
industries -- agriculture, horticulture (the scientific cultivation of
fruits, vegetables, herbs, flowers and ornamental plants in nurseries and
gardens), energy (solar, wind and fuel cells), greenhouse manufacturing,
hydroponics (soil-less growing), environmental control software, lighting,
heating and ventilation, polymers and many more.
Properly built and operated, these state-of-the-art, computerized food
producing machines can enclose valuable unused urban space in glass to
produce abundant crops of commercially grown food for local consumption.
Covered in This Article:
Controlling the Environment
"Controlled Environment Agriculture (CEA) is a high-tech industry for the
production of food crops, flowers, houseplants and medicinals within
controlled environment greenhouse structures."
Green Tech
"A "gold standard" already exists for hydroponic greenhouses."
Greenhouse Hardware/Software
"Computers can operate hundreds of devices within a modern greenhouse
(vents, heaters, fans, hot water mixing valves, irrigation valves,
curtains. lights. etc.) by utilizing dozens of input parameters, such as
outside and inside temperatures, humidity, outside wind direction and
velocity, CO2 levels and even the time of day or night."
Solar Energy
"Active solar greenhouses use supplemental energy to move solar-heated air
or water from storage or collection areas to other regions of the
greenhouse."
Wind Power
"Wind turbines are mechanical rotary devices that extract wind energy and
convert it to electricity."
Fuel Cells
Let There Be Light
"As for the use of modern light-emitting diode (LED) semiconductor
technology in plant grow lights, LEDs present many advantages over
traditional lighting technologies like high pressure sodium (HPS) and High
Intensity Discharge (HID)."
Urban Gardening, Part 1: The Hydroponic Lab on the Roof
<http://groups.yahoo.com/group/Net-Gold/message/33170>
The complete article may be read at the URL above.
Sincerely,
David Dillard
Temple University
(215) 204 - 4584
jwne@xxxxxxxxxx
<http://daviddillard.businesscard2.com>
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