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Tokyo University benefits from retrofitting uPVC windows

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The University of Tokyo in Japan has made it one of its missions to contribute to the realisation of a sustainable society by creating a sustainable campus, while at the same time encouraging research and education by drawing on its wealth of existing intellectual resources. To do this, it has established the Todai (Tokyo University) Sustainable Campus Project (TSCP), an alliance between industry and academia.

 

One of the project's first and foremost priorities is to create a low-carbon campus by reducing greenhouse gas emissions. Most of the university’s CO2 emissions come from electricity use with air conditioning contributing to approximately 30 percent of the campus' total emissions. Annual CO2 emissions for the five campuses are 0.10 ton-CO2⁄m2 on average, which is similar to the average figure for office buildings in Tokyo. However, total emissions for the Hongo Campus, the total floor area of which is particularly large, are equivalent to those for the largest CO2 emitting office buildings in Tokyo.

 

As one of the measures to address its greenhouse gas emissions, Japan's Vinyl Environment Council and the Japanese Plastic Windows Promotion Committee have taken part in a TSCP project to install uPVC inner windows at the Hongo campus headquarters.

 

The uPVC inner windows have been installed on all windows on the ground floor of the building. It took two days to complete the retrofit. Condition changes in the rooms were subsequently measured for a short period of time and according to these early trial calculations, the air conditioning burden was reduced by approximately 19 per cent compared to pre-installation.

 

Measured results are to be reported at the TSCP's conference.

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