Single and twin turbine fluid stream energy collection and conversion devices

A fluid turbine assembly comprising:

• a circular housing;
• one or more turbines placed inside the housing and configured to rotate about a rotational axis, the one or more turbines including a rotor and a plurality of blades which protrude from an outer surface of the rotor;
• a single funnel configured to collect and compress fluid stream energy through a fluid inlet opening;
• and
• wherein an extendable part of the funnel includes an adjustable inlet surface area means preset in an extended position configured to expand an inlet surface area of the funnel and configured to reduce the inlet surface area according to predetermined set fluid flow values by retracting the extendable part of the funnel,
• wherein the adjustable inlet surface area means includes panels which fold back by origami technique or slide back or includes a sail of flexible material having a surface and configured to roll back when the pressure of the fluid stream reaches a predetermined setting;
• and
• a ducting part of the funnel configured to direct the collected fluid stream energy into the housing and toward the turbine blades in a first direction, and to direct the collected fluid stream energy into the housing and toward the turbine blades in a second direction opposite the first direction at the same time;
• wherein the funnel is configured to rotate on the same axis independently of the turbine blades,
• wherein the circular housing has ducting walls which separate, compress, direct, and recombine the fluid stream energy in opposite directions.

A method of converting fluid stream energy into mechanical energy, comprising:

• collecting and compressing via a funnel into a surround housing which creates two fluid streams;
• and
• wherein an extendable part of the funnel includes an adjustable inlet surface area means preset in an extended position configured to expand an inlet surface area of the funnel and configured to reduce the inlet surface area according to predetermined set fluid flow values by retracting the extendable part of the funnel,
• wherein the adjustable inlet surface area means includes panels which fold back by origami technique or slide back or includes a sail of flexible material having a surface and configured to roll back when the pressure of the fluid stream reaches a predetermined setting
• immediately pushing, by a first fluid stream, on special curved tall turbine rotor blades of one or more turbine rotors, the blades collecting and momentarily holding fluid stream energy particles, and causing the turbine rotor or rotors to absorb additional fluid stream energy which converts into mechanical energy, which causes the rotors to spin;
• causing a second fluid stream to travel about 180 degrees around a circular housing, speeding up before merging with the first fluid stream which further compresses, causing additional fluid stream energy to be absorbed into the turbine rotor or rotors from the opposite direction;
• and
• finishing a fluid stream travel and exiting the housing at about 300 degrees, around the turbine rotor.