A gravitational atmospheric solar pump is provided. The gravitational atmospheric solar pump has a (preferably) cylindrical tube which is placed in a vertical orientation. Air enters the cylindrical tube at the top of the tube and travels downward exiting the opening at the bottom of the tube. An air flow initiator, such as a fan, creates the pressure needed to move the air downward. Blades located within the tube are rotated by the moving air. The pump captures energy by converting the motion of the blades to electricity through a connection to a generator. Throughout the tube, the air remains at a generally consistent density and temperature. The tube represents an open-air system, and air discharged at the bottom of the tube is returned to a higher elevation using solar energy separate from the energy requirements of the apparatus.

A thermal-cycle powered water pump includes a conduit having a first end thereof in a water source. A rigid tank, in fluid communication with the second end of the conduit, is in an environment that experiences a daily thermal cycle. During the daily thermal cycle, heat energy transferred from the environment to the interior increases pressure in the interior, while heat energy transferred from the interior to the environment decreases the pressure in the interior. A first check valve opens a flow path from the conduit's first end to its second end only when the pressure in the tank's interior is less than a water pressure of the source of the water. A second check valve in fluid communication with the tank's outlet opens a flow path from the tank's interior to the environment only when the pressure in the interior is greater than an ambient pressure of the environment.

A gravitational atmospheric solar pump is provided. The gravitational atmospheric solar pump has a (preferably) cylindrical tube which is placed in a vertical orientation. Air enters the cylindrical tube at the top of the tube and travels downward exiting the opening at the bottom of the tube. An air flow initiator, such as a fan, creates the pressure needed to move the air downward. Blades located within the tube are rotated by the moving air. The pump captures energy by converting the motion of the blades to electricity through a connection to a generator. Throughout the tube, the air remains at a generally consistent density and temperature. The tube represents an open-air system, and air discharged at the bottom of the tube is returned to a higher elevation using solar energy separate from the energy requirements of the apparatus.

A pump uses solar energy to heat bimetals and other materials with high expansion coefficients to create movement that is coupled to pistons or impellers resulting in a fluid pumping action. The moving pistons or impellers are used to push salt water (or any fluid) through a membrane for filtration. Furthermore, the mechanical movement, powered by solar energy can be used for a variety of applications including pumps to move liquids or gases.

A gravity-driven energy pump apparatus and method for reverse osmosis desalination utilizing the gravitational force of an electrified weight-bearing vehicle. Comprised of upright support stanchion posts, an axle, and a linear track with protective end stops located on opposite ends. Wherein the central section of the track is affixed to the axle, enabling rotation when gravitational force is applied, thus tilting the opposite side on the axle. Further comprises an electrified weight-bearing vehicle (EWBV) positioned atop the track allowed to move back and forth, exerting gravitational force and inducing rotation. A solar PV array is affixed to the top of the EWBV to generate solar energy to power the battery. Chains affixed to both ends of the track catch the falling weight of the track. The action rotates drive and pinion gears to push pistons into pressure cylinders, facilitating fluid pumping between pressure cylinders and a pre-filtered water reservoir.