IBM’s High Concentration Photovoltaic Thermal system will be able to concentrate light to the power of 2,000 suns while also providing fresh water and cool air.
IBM claims that it would require only two percent of the Sahara’s total area to supply the world’s energy needs. The HCPVT system is designed around a huge parabolic dish covered in mirror facets. The dish is supported and controlled by a tracking system that moves along with the sun. Sun rays reflect off of the mirror into receivers containing triple junction photovoltaic chips, each able to convert 200-250 watts over eight hours. Combined hundred of the chips provide 25 kilowatts of electricity.
The entire dish is cooled with liquids that are 10 times more effective than passive air methods, keeping the HCPVT safe to operate at a concentration of 2,000 times on average, and up to 5,000 times the power of the sun. The direct cooling technique is inspired by the branched blood supply system of the human body and has already been used to cool high performance computers like the Aquasar. The system will also be able to create fresh water by passing 90 degree Celsius liquid through a distillation system that vaporizes and desalinates up to 40 liters each day while still generating electricity. It will also be able to amazingly offer air conditioning by a thermal drive absorption chiller that converts heat through silica gel. …
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