A Super-Green Factory: The Sharp Kameyama Plant
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neered this approach with their Energain product. The phase change material is sandwiched between two thin aluminum foils, and at around 22°C, it goes through a phase change. In doing so, the material absorbs heat from the atmosphere. In a room internally wrapped in this product, this behavior helps to mitigate heat buildup, thereby helping to keep the room cool without the need for air conditioning. The use of phase change materials is very likely to increase in construction and other applications such as transport.
Summary
Figure 1. Domestic wasteboard made mostly of unsegregated rubbish.
building materials are being investigated and brought into the construction marketplace with renewed vigor. Hemp, straw, sisal, and jute are being used as fiber reinforcements or fillers for composite products (where limecrete, epoxy, phenolics, or formaldehyde-based binders are used) and blocks. The manufacturing of films and polymers from starch is also in development, as is the production of adhesive systems based on tannins. Whether these types of materials ever make it into the mainstream remains to be seen, but their use in more niche buildings will inevitably grow.
Phase Change Materials
The entropy changes associated with the transformation of a material from one phase to another can be exploited as a temperature-controlling mechanism in buildings. DuPont has pio-
It is clear that environmental sustainability is driving change throughout the construction sector in a manner that has not been seen for many decades. A key to reducing environmental impacts lies in the materials and products that are used in our buildings—in reducing their environmental impacts through manufacturing and use—and in designing them into buildings that are significantly more environmentally efficient. This endeavor provides a new sense of purpose and a new energy to materials scientists and technologists who have much to offer and much to do to enable delivery of the innovation required.
References
1. The European Parliament and The Council of the European Union, On the Energy Performance of Buildings (Directive 2002/91/Ec, December 16, 2002; www.diag.org.uk/media/18832/epd_final.pdf) (accessed January 2008). 2. Building Research Establishment, BRE’s Environmental Profiles (BRE, Watford, UK; www.bre.co.uk/page.jsp?id=53) (accessed January 2008). 3. Building Research Establishment, The BRE Green Guide to Specification (BRE, Watford, UK; www.bre.co.uk/greenguide/page.jsp?id=499) (accessed January 2008). 4. Building Research Establishment, BREEAM: BRE Environmental Assessment Method (BRE, Watford, UK; www.breeam.org) (accessed January 2008). 5. Building Research Establishment, BRE: The Code for Sustainable Homes (BRE, Watford, UK; www.bre.co.uk/page.jsp?id=847) (accessed January 2008).
A Super-Green Factory: The Sharp Kameyama Plant Tetsuo Kusakabe (Sharp Corporation, Japan)
Integrating Different Types of Large-Scale Power Sources into a Distributed Power Supply System Sharp Corporation is making a concerted effort to reduce environmenta
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