Double Insulation glass.

Ecology (Spaceship, the earth: Limited of growth:From the proposal of Roma Club)

It is one the most important subjects to reduce emission of CO2 in conjunction with preventive measures of the green house effect. It has turned to be an important international subject.
The Government of Japan is aiming to control emission in the year 2000 at the level of emission in 1990 (an equivalent to 320 million tons of carbon).
However, at this point in time, it is estimated that as much as 330 million tons will be in excess of the target. It is an avoidable target to reduce 10 million tons by the year 2000.

Among such increase emission from people's living is remarkably rising:
The result of 1990 : 72 millions tons (22.5% of the total)
Estimated 2000 : 93 million tons (28.1% of the total)

As a strong measure, to use insulation glasses (heat isolation) for the openings of buildings and complex living buildings are widely discussed.
At this point in time, if the energy conservation for next generation is applied (if all the existing windowpanes of houses are replaced with insulation glasses), estimated reduction of CO2 emission is 2 million tons (from 6 million tons to 4 million tons), which represents a 20% of 10 million tons of advocated target of Government.

１ Kinds of Insulation Glass By combining various types of glasses, we can get a glass which fulfills our preferred features.

２ Room temperature changes drastically. Points to be aware of are heat insulation and ventilation for comfort and healthy living, says Professor Takashi Sugai from the Architecture Department of The Fukuoka University

Winter time : Cold air stays at the floor level.
Be aware of cerebral infarction due to low temperature.
Hurts the throat.

Prevention of dew condensation: Various allergic diseases.
This is the cause of cerebral infarction in the northern area.

Summer time: Prevention of unhealthy conditions such us from lack of sleep,
air conditioning syndrome and heat syndrome of aged people.

Use heat Reflect insulation (High Performance)type glass even in the hot regions

３ Regional Climates and Recommended Type of Glasses Tohoku and Hokkaido: Low-E insulation glass
Akita : Same as above.
Sendai : Same as above.
Tokyo : High heat Reflection insulate glass.
Osaka : Same as above.
Fukuoka : Same as above.

４ Carefully consider where to be used: Most of houses in Japan have eaves which prevents summer sunlight directly comes into rooms. However, a high heat reflect insulation glass is necessary for windows facing to the wes

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１	Kinds of Insulation Glass	By combining various types of glasses, we can get a glass which fulfills our preferred features.
２	Room temperature changes drastically.	Points to be aware of are heat insulation and ventilation for comfort and healthy living, says Professor Takashi Sugai from the Architecture Department of The Fukuoka University Winter time : Cold air stays at the floor level. Be aware of cerebral infarction due to low temperature. Hurts the throat. Prevention of dew condensation: Various allergic diseases. This is the cause of cerebral infarction in the northern area. Summer time: Prevention of unhealthy conditions such us from lack of sleep, air conditioning syndrome and heat syndrome of aged people. Use heat Reflect insulation (High Performance)type glass even in the hot regions
３	Regional Climates and Recommended Type of Glasses	Tohoku and Hokkaido: Low-E insulation glass Akita : Same as above. Sendai : Same as above. Tokyo : High heat Reflection insulate glass. Osaka : Same as above. Fukuoka : Same as above.
４	Carefully consider where to be used:	Most of houses in Japan have eaves which prevents summer sunlight directly comes into rooms. However, a high heat reflect insulation glass is necessary for windows facing to the wes