A fog and rain collector includes a number of mesh panels and a mesh roof panel for collection of fog and rain. The mesh panels used for fog collection may be concave-shaped for greater surface area and increased fog collection. The upper edges of the mesh panels may be arranged in a polygon shape allowing for the collection of fog from all directions. The mesh panels may be mounted on support posts and a trough may be mounted beneath the mesh panels for collection of rain and fog condensate. A dustproof drain is mounted on the trough and connected to a first piping section which moves the water from the trough to a filter and then through a second piping section to a water container for storage. Support posts may used for mounting the mesh panels as well as mounting plates fasted to a surface by screws.

A method and apparatus for generating water from an atmospheric water source involving (a) collecting a fixed volume of ambient air in a chamber; (b) raising the pressure of the fixed volume of ambient air in the chamber by heating the fixed volume of ambient air with a solar heater thereby increasing the dew point of the fixed volume of ambient air in the chamber; (c) cooling a surface of the chamber with air outside the chamber; (d) condensing the water in the fixed volume of ambient air in the chamber on the cooling surface when the dew point is greater than the temperature of the cooling surface that is in contact with outside air; (d) collecting the resulting dew in a collection basin; and (f) refreshing the air supply within the chamber.

An apparatus comprising a heat exchanger and one or more induction heating elements is disclosed. The heat exchanger comprises a coolant side conduit and a process side conduit, the process side conduit being susceptible to fouling by at least partial desublimation, condensation, crystallization, deposition, or combinations thereof of a fouling component of a circulating process fluid. An electrically conductive first metal is disposed adjacent to the process side conduit. The one or more induction heating elements are disposed proximate to the heat exchanger. The one or more induction heating elements are connected to a source of electrical current. When the electrical current flows through the induction heating elements, eddy currents are induced in the first metal, heating the first metal such that the fouling component sublimates, melts, absorbs, or a combination thereof into the circulating process fluid.

A gravity power and desalination technology system is provided, including a heat storage apparatus, an inner tube portion, a hot-air and vapor generator, and venting holes, a corrugated tube portion, an outer tube portion, an updraft wind power generator, and an artificial hydro power generator. The heat storage apparatus is provided in a lower portion and configured. The inner tube portion has an inner vent portion inside and disposed vertically over the heat storage apparatus. The hot-air and vapor generator is disposed between the heat storage apparatus and the inner tube portion. The venting holes are bored through the inner tube portion obliquely outwards. The corrugated tube portion is provided on a top portion of the outer tube portion. The updraft wind power generator and the artificial hydro power generator are installed in the lower portions of the inner vent portion and the outer vent portion, respectively.

An atmospheric water vapor extraction device is contained within reservoir that includes an evaporation chamber, a condensation chamber, a water latent hygroscopic solution within a conduit, a solution container, and a water depleted hygroscopic solution within a conduit. The conduits extend into container to a level below the hygroscopic solution level within the container to prevent passage of air into the conduits. The water extraction device further includes a water collection conduit and water container. The water collection conduit connects the condensation chamber to a water container. The conduit extends into container to a level below the level of water within the container to prevent the passage of air into the conduit and thereby maintain a level of vacuum within chamber that is representative of the weight of the water column within conduit and the vapor pressure of the water at the top.

The disclosed technology includes techniques for improving efficiency of heat transfer devices, specifically condensers. An exemplary embodiment provides a device for condensing vapor bubbles comprising a quantity of liquid, a vapor source, and an acoustic transducer. The vapor source can be configured to introduce a plurality of vapor bubbles in the quantity of liquid. The acoustic transducer can be configured to provide acoustic energy to the quantity of liquid such that at least a portion of the acoustic energy is transferred to the plurality of vapor bubbles causing at least a portion of the plurality of vapor bubbles to condense in the quantity of liquid.

A gravity power and desalination technology system is provided, including a heat storage apparatus, an inner tube portion, a hot-air and vapor generator, and venting holes, a corrugated tube portion, an outer tube portion, an updraft wind power generator, and an artificial hydro power generator. The heat storage apparatus is provided in a lower portion and configured. The inner tube portion has an inner vent portion inside and disposed vertically over the heat storage apparatus. The hot-air and vapor generator is disposed between the heat storage apparatus and the inner tube portion. The venting holes are bored through the inner tube portion obliquely outwards. The corrugated tube portion is provided on a top portion of the outer tube portion. The updraft wind power generator and the artificial hydro power generator are installed in the lower portions of the inner vent portion and the outer vent portion, respectively.

In a method and apparatus for passing a mixed vapour and liquid stream between a first heat exchanger (101) and a second heat exchanger (102) the mixed vapour and liquid stream outflows from the first heat exchanger (101) through two or more outlets (104). Then, the mixed vapour and liquid stream in the outlets (104) passes through two or more intermediate conduits (103) to the second heat exchanger (102), after which the mixed vapour and liquid stream inflows from the intermediate conduits (103) into the second heat exchanger (102) through two or more inlets (105). The number (X) of outlets (104) is equal to or greater than the number (Y) of inlets (105).

Low Reynolds number forced convection heat transport within the fin channels enhanced by deliberate formation of unsteady, small-scale vortical motions using elastically fluttering thin-film reeds. The vortical motions substantially increase the local heat transfer coefficient at the channel walls and mixing between the wall thermal boundary layers and the cooler core flow. The flow mechanisms associated with production, advection and dissipation of these small-scale motions are investigated in a modular, high aspect ratio channel using micro-PIV, video imaging of the reed motion, and hot-wire anemometry. The global heat transfer enhancement in a modular heat sink prototype shows that the reed-induced small scale motions increase the turbulent kinetic energy of the flow even when the base flow undergoes transition to turbulence, leading to an increase in the local and global Nusselt number that is sustained at higher Re and a minor relative increase in losses.