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[B-16.1 Promotion of an Insulated Construction House to Control and Reduce Carbon Dioxide Emissions from Residential Sector]

[Contact Person]

Shinji Wakamatsu
Section Director
Regional Environment Division, Urban Air Quality Research Team
National Institute for Environmental Studies
Environment Agency
16-2 Onogawa, Tsukuba, Ibaraki 305 Japan
Phone +81-298-51-6111(Ext.453) Fax +81-298-51-4732

[Total Budget for FY1991-1993]

25,938,000 Yen (FY1993 9,116,000 Yen)

[Abstract]

　A new conventional wooden construction house, which mainly differs in the amount of insulation and construction method was investigated using simulation model. Construction method was also discussed. Comparison of annual carbon dioxide emission from house construction process and emission from residence for various house insulation, infiltration and equipment level were conducted. Estimated annual carbon dioxide emission rate from house construction process was 407(Ckg/house). In this estimation life time of house is assumed 30 years.
　Annual carbon dioxide emission rate from residence in seven cities were estimated under the six types of specification of insulation and infiltration levels and equipments. For the base case emission of carbon dioxide from new insulation and infiltration level house which is presently used for new construction was estimated. For example in Sapporo and Tokyo showed 3152 and 2281(Ckg/household) respectively. For the case of super insulated and low infiltration construction house this value is decreased to 2010 and 1423(Ckg/household) respectively. This reduction rate of carbon dioxide is much higher than the emission of house construction processes, and it was found that the promotion of an super insulated and infiltration construction house is very efficient to reduce carbon dioxide emission from residential sector.

[Key Words]

Super Insulated Construction Houses, Low Infiltration Construction House, Wooden Construction House, Eco-House