Selective surface
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In solar thermal collectors, a selective surface is chosen based on the ratio of radiation-absorption (alpha) to radiation-emission (epsilon), with a higher ratio meaning better performance. A black chromium nickel-plated copper ("black chrome") panel is very durable, highly resistant to humidity or oxidizing atmospheres and extreme temperatures while being able to retain its selective properties - but expensive. Ordinary steel or aluminum plate can be spray-painted black for a cheaper (but less effective) collector plate.
See also
- Insulated glazing
- Solar box cooker
- Solar collector
- Solar oven
- Solar power
- Solar thermal collector
- Trombe wall
External links
- Black Chromium (http://www.finishing.com/104/99.html)
- Selective Surface for efficient Solar Thermal Conversion (http://www.bcas.net/Publication/EnergyNewsletter/Document/2003-5.PDF)