H.w.e.s.
Habitat friendly, multiple impellor, wind energy extraction
Habitat hydro scheme
Handy terminal for wind turbine generator
Handy terminal for wind turbine generator and wind turbine...
Handy terminal for wind turbine generator, wind turbine...
Harnessing power (elect) from motion to supply or maintain...
Harnessing the power of the wind to rotate a vertical and...
Hatch stop for wind turbines
Heat engine
Heat engine
Heat exchanger duct
Heat motor-arel 3
Heat pump method of concentrating fluids
Heat storage pond and power plant using same
Heat vapor differential engine
Heating system, wind turbine or wind park, method for...
Helical hydraulic pump
Helical penstock
Helical turbine for power and propulsion systems