Solar collectors

Chowdhury, Ihtesham, Todd P Otanicar, Ravi S Prasher, Jonathan A Sherbeck, Patrick E Phelan, and Marc Burrell. "Enhanced Efficiency in a Coupled Photovoltaic/Thermal Concentrating Solar Collector." ASME 2010 4th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2010. 529–536.

Tyagi, Himanshu, Patrick E Phelan, and Ravi S Prasher. "Predicted Efficiency of a Low-Temperature Nanofluid-Based Direct Absorption Solar Collector." J. Sol. Energy Eng. 131 (2009) 041004.