International Automated Systems (fka IAUS)

[scion]

IBM solar collector magnifies sun by 2,000x (without cooking itself), costs 3x less than similar systems

Michael Graham Richard
Energy / Renewable Energy
April 23, 2013
http://www.treehugger.com/renewable-energy/ibm-solar-collector-magnifies-sun-2000x-without-cooking-itself.html

© IBM

Cleverly combining solar PV with solar thermal to reach 80% conversion efficiency

Concentrating the sun's ray onto solar photovoltaic (PV) modules requires walking the fine line between optimizing power output and not literally melting your very expensive super-high-efficiency solar cells. A team led by IBM Research seems to have found a way to push back the line. They have created a High Concentration PhotoVoltaic Thermal (HCPVT) system that is capable of concentrating the power of 2,000 suns onto hundreds of triple junction photovoltaic chips measuring a single square centimeter each (they even claim to be able to keep temperatures safe up to 5,000x). The trick is that each solar PV cell is cooled using technology developed for supercomputers; microchannels only a few tens of micrometers in width pipe liquid coolant in and extract heat "10 times more effective than with passive air cooling."

[...]
more
http://www.treehugger.com/renewable-energy/ibm-solar-collector-magnifies-sun-2000x-without-cooking-itself.html