A photovoltaic- powered water pumping system, employing an induction motor pump, capable of supplying a daily average of 50 m 3 at 37- m head has been...

The utility of HP (heat pump) in winter is limited by the problem of frost. The authors discuss a method for preventing HP from frosting, i. e. air is...

The variation patterns of global temperature were considerably turbulent from about 1870 up to 1940. Then just after 1940 these patterns underwent a s...

A proposal for an extended formulation of the power coefficient of a wind turbine is presented. This new formulation is a generalization of the Betz–...

In the present work, the aerodynamic performance prediction of a unique 30 kW counter- rotating (C/ R) wind turbine system, which consists of the main...