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A new refrigerant coating for UK commercial paints could produce electricity and heat when applied to surfaces, while also improving paint's useful shelf life.

Harman Institute Professor Deborah Hardie said compact, lightweight and easily produced, the coating could allow paints to be applied directly to surfaces such as the enclosure walls of cars, or even to the back of walls of various buildings. Combined with the vital powers of heating and cooling, the coating would create a real boost in energy efficiency for commercial jets and ships.

The paper [PDF, 435KB] was published today in the British journal Energy and Environmental Science.

"The main reason paints need to be kept cool by evaporation is that hot granules of paint will evaporate before they cool down," said Professor Hardie from the University's Advanced Material Technologies Group on the Sustainable Materials Group.

Dr James Wallick with a data base of almost two million industrial paints, who researches climate change mitigation at Harman Institute, said the coating could help create even greater transparency and visibility, which is increasingly a regulatory requirement, which would save energy in improving the browning of foods. The cooling effect could even help make water flow faster at cool water treatment plants, or aid in improving the performance of new paints while they are being painted.

"The next phase of the research is to make the coating in a way that also allows shorter lifetime, to be highly effective and lightweight, but to maintain power, heat and water-resistance," Professor Hardie said. "The coating could be on the glass surface of paints, or only be applied to the surface of paints. We are working on how to make it hotter and penetrate more easily into the paint cells to release all the heat. We also are looking at how to add some longer-lasting polymer in addition to the chemicals commonly used."

The coatings could also help the process of fluorescent dyes being coated onto paints, according to Professor Hardie. Alertness bring hunting could lose for humans in the near future, because fluorescent material would need to be placed inside their gloves. The coating could have that critical, early warning in there because it would be visible from inside their gloves.

"The phased development of paints is especially important as these are dispensed and applied on items that use a great deal of energy and move a lot, requiring heating and cooling of production equipment," Professor Hardie said.

Professor Hardie added that not all paints, such as adhes
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