Abstract: The solar powered evaporative air conditioning system is especially adapted for use in areas wherein the climate conditions are hot and dry. A tunnel-shaped, light weight, inflatable structure is employed to enclose a space to be cooled, the space having a floor or ground area enclosed by the structure. Solar panels are disposed on the roof of the structure to generate electrical energy to power the air conditioning system. The inflatable structure is designed with a roof having a hyperbolic paraboloidal configuration such that a narrow cross-sectional area or throat area is formed between the roof and ground.

Abstract: The water desalination system using geothermal energy includes a plurality of stepped evaporation trays. Salt water flows into the uppermost tray and cascades to each successively lower tray to overflow from the lowermost tray when all trays are full. Two sloped glass panels pass solar energy therethrough to heat the water. Condensation collects on the inner panel and runs down the panel to collect in a trough at the lower edge. The desalinated water then flows to a collection tank. Additional heat energy is provided by a working fluid (e.g., air) that is pumped to subterranean levels where significant geothermal heat is produced. The heated air is then circulated around the evaporation trays to enhance evaporation. The required energy for the operation of the system may be provided by solar cells and wind energy. Mirrors and functionally graded material further increase the efficiency of the desalination system.

Abstract: The solar powered evaporative air conditioning system is especially adapted for use in areas wherein the climate conditions are hot and dry. A tunnel-shaped, light weight, inflatable structure is employed to enclose a space to be cooled, the space having a floor or ground area enclosed by the structure. Solar panels are disposed on the roof of the structure to generate electrical energy to power the air conditioning system. The inflatable structure is designed with a roof having a hyperbolic paraboloidal configuration such that a narrow cross-sectional area or throat area is formed between the roof and ground.

Abstract: The bird repellent system is particularly adapted to repel various species of birds on and around airports, but may be readily adapted for use in other environments where birds have become a nuisance or hazard. The system includes both a ground vehicle and an airborne vehicle to optimize the effect against both sitting birds and birds in flight. Both vehicles are unmanned and operate autonomously, or by remote control as drones. The airborne vehicle is preferably a quad rotor craft for very slow and hovering flight. Both vehicles are equipped with GPS guidance and are preprogrammed to travel about a predetermined area or route. The two vehicles communicate with one another for optimum effect. Both vehicles include audio systems to broadcast startling sounds and/or bird distress cries in sound frequencies audible to humans as well as in ultrasonic frequencies known to be audible to various species of birds.

Abstract: The water desalination system using geothermal energy includes a plurality of stepped evaporation trays. Salt water flows into the uppermost tray and cascades to each successively lower tray to overflow from the lowermost tray when all trays are full. Two sloped glass panels pass solar energy therethrough to heat the water. Condensation collects on the inner panel and runs down the panel to collect in a trough at the lower edge. The desalinated water then flows to a collection tank. Additional heat energy is provided by a working fluid (e.g., air) that is pumped to subterranean levels where significant geothermal heat is produced. The heated air is then circulated around the evaporation trays to enhance evaporation. The required energy for the operation of the system may be provided by solar cells and wind energy. Mirrors and functionally graded material further increase the efficiency of the desalination system.

Abstract: The evaporative desalination system removes salt and contaminants from brine or salt water to produce purified potable water. The evaporative desalination system includes an inclined housing having a raised upper end and a lower end. An upper wall of the inclined housing is formed from an optically transparent material, such as glass. A plurality of stepped evaporator trays are mounted within the inclined housing, and a water collection tray is disposed within the inclined housing adjacent the lower end. Ambient light is transmitted through the optically transparent upper wall, causing the salt water contained within the plurality of stepped evaporator trays to evaporate. Evaporated water vapor rises from each evaporator tray to form a layer of condensed pure water on the inner surface of the upper wall. The condensed pure water drips toward the lower end of the inclined housing to collect in the water collection tray.

Abstract: The evaporative desalination system removes salt and contaminants from brine or salt water to produce purified potable water. The evaporative desalination system includes an inclined housing having a raised upper end and a lower end. An upper wall of the inclined housing is formed from an optically transparent material, such as glass. A plurality of stepped evaporator trays are mounted within the inclined housing, and a water collection tray is disposed within the inclined housing adjacent the lower end. Ambient light is transmitted through the optically transparent upper wall, causing the salt water contained within the plurality of stepped evaporator trays to evaporate. Evaporated water vapor rises from each evaporator tray to form a layer of condensed pure water on the inner surface of the upper wall. The condensed pure water drips toward the lower end of the inclined housing to collect in the water collection tray.