What is green curtain?
From 2008, we carry out "green curtain business" as part of heat island measures in Kanazawa Ward.
With green curtain, we bring up morning glory and bitter gourd, crane-related plant including cucumber outside window and make. The room can spend entering wind comfortably coolly to shut out direct rays of the sun, and to suppress rise in room temperature, and to serve to release moisture from leaf to plant. By reduction of CO2 caused by photosynthesis and indoor temperature drop, it leads to air conditioner restraint and suppresses temperature rise. <effect of green curtain>
It spreads in inhabitant of a ward, nursery school, elementary school and, in Kanazawa Ward, enlightens other than green curtain in ward Government building.
Does everybody not bring up green curtain, too?
How to make, how to raise green curtains
Plant suitable for green curtain
Gourd Balloon number and others Bitter gourd Morning glory Sponge gourd
Preparations for kind
We cut sharp part of kind with nail clippers to make it easy to germinate. Let's be careful not to cut green part of the inside. After having cut, we soak species in water overnight.
We put in water dehitahitanishita small dishes and wait for germination. White bud comes out when we do for 3-4 days. Kind lowers white bud and plants and covers with soil afterwards. When we put pot in house and we hang newspaper and plastic cap and keep warm, it becomes easy to germinate.
It germinates when we do for approximately one week. 25 degrees Celsius - 30 degrees Celsius become germination right temperature. If leaf becomes 2-3 pieces, we cut vulgar thing.
If leaf becomes 4-5 pieces, we plant to planter. We separate 30-40cm and plant quietly not to destroy soil of the root.
We put net
Inducement of string
If leaf becomes 6-7 pieces to do like curtain more, we cut bud of pro-zuruno ahead. We induce small zuru, pro-zuruo aside and stop with tape in net lightly.
Green curtain completion!
Leaves quite grow thick into a curtain form from seeding in from two months to two and a half months and will become able to enjoy the first gain.
Effect of green curtain
The measurement that infrared radiation thermometer depends on
Infrared radiation thermometer is thermometer which can take surface temperature without touching object.
We catch infrared ray emitted by object and convert into temperature and display surface temperature.
We measured temperature using infrared radiation thermometer to measure effect of green curtain.
[measurement day: on Wednesday, September 17, 2008 weather on the day: fine weather maximum temperature: 28 degrees Celsius minimum temperature: 21 degrees Celsius]
Measurement scenery of elementary school studenｔ in elementary school
The measurement by infrared thermography
We measured difference in temperature using infrared thermography in elementary school in ward on August 12, 2008.
We detect infrared radiant energy going out of object and convert into surface temperature, and infrared thermography is device that raster display does temperature distribution.
As a result, temperature of curtain which was greener than the maximum temperature was found to have low 8 degrees Celsius.