In the present invention, a recuperator is used in a refrigerant cycle to make a heat exchange between a refrigerant generated in a condenser and a refrigerant before flowing into a compressor, thereby supercooling the refrigerant to minimize the quality of the refrigerant introduced into an evaporator, elevating temperatures at an inlet and an outlet of the compressor, and increasing condensed heat of the condenser. In the present invention, a recuperator is used to increase condensed heat of the condenser, leading to increasing the heat which circulation water circulating in a steam producing cycle receives from the condenser, whereby steam production efficiency can be improved.

A cavitation boiler segment includes a rotor to be coupled with a rotating inner drum and a stator surrounding the rotor segment. The rotor and the stator each include drums with two banks of annular apertures, which overlap to define two cavitation regions. The rotor includes a web bifurcating the rotor between the apertures into an upstream side and a downstream side, each forming a separate fluid passage between a face of the rotor and a bank of apertures. The stator includes a casing enclosing the stator apertures in a fluid passageway. In operation, fluid flows into a first side of the rotor, across a first cavitation region and into the stator, then back across the second cavitation region and into the second side of the rotor where the fluid may flow into a first side of an adjacent segment.

A system for the generation of electrical power using a solar collector that heats water using solar energy. The heated water is stored in a first tank. A vessel is connected to the first tank through a pipe and includes a headspace within which the heated water is sprayed to thereby generate steam. The headspace pressure is lower than atmospheric pressure and the water not converted to steam is collected in a pool at the bottom of the vessel to be fed back into the first tank. The steam is fed to a partial admission turbine that drives an electrical generator.

A system for the generation of electrical power using a solar collector that heats water using solar energy. The heated water is stored in a first tank. A vessel is connected to the first tank through a pipe and includes a headspace within which the heated water is sprayed to thereby generate steam. The headspace pressure is lower than atmospheric pressure and the water not converted to steam is collected in a pool at the bottom of the vessel to be fed back into the first tank. The steam is fed to a partial admission turbine that drives an electrical generator.

A fluid heating system for heating a production fluid using a thermal transfer fluid, the production fluid being contained in a vessel includes an electric blower configured to receive ambient air and electrical input power and to provide output source air, a combustion system configured to receive the source air from the electric blower and to receive fuel and to provide the thermal transfer fluid, a heat exchanger configured to receive the thermal transfer fluid from the combustion system and configured to be in thermal communication with the production fluid to provide convective heat exchange from the thermal transfer fluid to the production fluid, and to provide output exhaust gas, and wherein the electric fan provides a predetermined volume flow rate of the output source air at a predetermined blower efficiency such that the fluid heating system has a Bulk Heat Flux of at least about 14.7 kBTU/Hr/ft.sup.2 and a Pressure Drop of at least about 0.7 psi.

The method includes: (A) directing a feed water in the liquid phase of an instant expansion tank; (B) in the instant expansion tank, heating the feed water by mixing with the recycled stream from step (E); (C) compressing again at a high pressure the liquid fraction in the instant expansion tank and sending the liquid fraction to the inlet of a heat exchanger or group of heat exchangers connected in series; (D) heating the non-expanded fraction in the heat exchanger(s) while maintaining the non-expanded fraction in the liquid state; (E) recycling the stream from step (D) in the instant expansion tank; (F) in the instant expansion tank, expanding the fraction from step (E) and generating by instant expansion a stream of the searched steam containing the mineral materials of the feed water remaining in solution; and (G) separating the solid particles formed as a blowdown containing water and the particles.

The method includes: (A) directing a feed water in the liquid phase of an instant expansion tank; (B) in the instant expansion tank, heating the feed water by mixing with the recycled stream from step (E); (C) compressing again at a high pressure the liquid fraction in the instant expansion tank and sending the liquid fraction to the inlet of a heat exchanger or group of heat exchangers connected in series; (D) heating the non-expanded fraction in the heat exchanger(s) while maintaining the non-expanded fraction in the liquid state; (E) recycling the stream from step (D) in the instant expansion tank; (F) in the instant expansion tank, expanding the fraction from step (E) and generating by instant expansion a stream of the searched steam containing the mineral materials of the feed water remaining in solution; and (G) separating the solid particles formed as a blowdown containing water and the particles.

A vapour compression system (1) comprising at least two evaporator groups (5a, 5b, 5c), each evaporator group (5a, 5b, 5c) comprising an ejector unit (7a, 7b, 7c), at least one evaporator (9a, 9b, 9c) and a flow control device (8a, 8b, 8c) controlling a flow of refrigerant to the at least one evaporator (9a, 9b, 9c). For each evaporator group (5a, 5b, 5c) the outlet of the evaporator (9a, 9b, 9c) is connected to a secondary inlet (12a, 12b, 12c) of the corresponding ejector unit (7a, 7b, 7c). The vapour compression system (1) can be controlled in an energy efficient and stable manner. A method for controlling the vapour compression system (1) is also disclosed.

A cavitation engine configured to produce superheat steam from injected liquid water. The cavitation engine includes a funnel shaped impact chamber having an impact surface having a temperature of at least 375 degrees Fahrenheit, a small diameter opening at a bottom of the impact chamber, and an expansion chamber below the small diameter opening. The engine includes a fluid injector having an outlet positioned adjacent a largest diameter of the impact chamber and located to inject hyperbaric liquid water onto the impact surface of the impact chamber at supersonic velocities such that cavitation bubbles are present in the injected water. The outlet of the fluid injector and the impact surface are located relative to one another such that the outlet is spaced a distance from the impact surface of between 0.150 and 0.450 inches and the injected water hits the impact surface at an angle of between 85 and 95 degrees. Impact of the water with the impact surface crushes the cavitation bubbles in the injected water to generate pressure above 1,000 pounds per square inch and produce superheated steam.

A cavitation engine configured to produce superheat steam from injected liquid water. The cavitation engine includes a funnel shaped impact chamber having an impact surface having a temperature of at least 375 degrees Fahrenheit, a small diameter opening at a bottom of the impact chamber, and an expansion chamber below the small diameter opening. The engine includes a fluid injector having an outlet positioned adjacent a largest diameter of the impact chamber and located to inject hyperbaric liquid water onto the impact surface of the impact chamber at supersonic velocities such that cavitation bubbles are present in the injected water. The outlet of the fluid injector and the impact surface are located relative to one another such that the outlet is spaced a distance from the impact surface of between 0.150 and 0.450 inches and the injected water hits the impact surface at an angle of between 85 and 95 degrees. Impact of the water with the impact surface crushes the cavitation bubbles in the injected water to generate pressure above 1,000 pounds per square inch and produce superheated steam.