(UWIRE) -- In spring 2007, University of California Berkeley Energy and Resources Group professor Ashok Gadgil challenged students in his Design for Sustainable Communities class to come up with an ...

German startup Nexol Photovolthermic AG has unveiled a 1,500 W water heater that can use photovoltaic ... In the case of low solar radiation, the intelligent system reheats the upper zone of ...

Looking for a simpler solution [Martin] came up with his own solar pool heater for under $100 ... A 12V utility pump coupled with a timer allows water to sit in the hose under the sun for one ...

“Our system can be used for applications such as waste heat recovery, solar ... pump system prototype. A series of tests shows that the prototype is able to achieve, in typical heating ...