# US 11,029,044 B2 · High volume air stream water recovery system

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- Number: US 11,029,044 B2
- Document ID: US11029044B2
- Status: Granted
- Kind: B2
- Application number: 15/815,630
- Filed: 2017-11-16
- Published: 2019-05-16
- Granted: 2021-06-08
- Earliest claimed: 2017-11-16
- Assignees: The United States of America as represented by the Secretary of the Army
- Applicants: United States of America as Represented by The Secretary of The Army
- Inventors: Jedediah B Alvey; Martin A Page; Axy Pagan-Vasquez
- Web page: https://patentgrep.com/patent/US11029044B2

## CPC

- F24F 3/1411: {by absorbing or adsorbing water, e.g. using an hygroscopic desiccant}
- B01D 1/14: with heated gases or vapours {or liquids} in contact with the liquid
- B01D 5/006: {with evaporation or distillation}
- B01D 53/06: with moving adsorbents, e.g. rotating beds {(B01D53/025 takes precedence)}
- B01D 53/261: {by adsorption}
- B01D 53/265: {by refrigeration (condensation)}
- C02F 1/10: by direct contact with a particulate solid or with a fluid, as a heat transfer medium
- C02F 1/16: using waste heat from other processes
- E03B 3/28: from humid air (condensing of vapours in general B01D5/00; dehumidification of air for air-conditioning F24F3/14)
- F24F 2003/144: {by dehumidification only}
- Y02A 20/00: Water conservation; Efficient water supply; Efficient water use
- Y02W 10/37: using solar energy
- F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)
- E03B: INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER (drilling wells, obtaining fluids in general from wells E21B; pipe-line systems in general F17D)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02W: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

## Abstract

The invention is a water recovery system that utilizes waste heat and a moving air stream to recover water with minimal use of energy and without the need to move water through filtration devices. The invention may be used for recovery and reuse of water for a wide range of emergency back-up, environmental, industrial, and mission-oriented purposes.

## Claims

### Claim 1

A water recovery apparatus comprised of: a component for generating a moving air stream with sufficient speed, pressure, and volume to transmit heat and water vapor; a waste heat component for heating said moving air stream; a a heat conduit 12 coupled to a detachable drying chamber 14 having an open surface and containing a quantity of waste material having a recoverable water content, said waste material selected from the group consisting of waste, waste water, brine, sludge or other waste materials having recoverable water content, wherein said waste material forms a heating interface with said moving air stream; said drying chamber being coupled to an evaporation chamber 16 for utilizing aid waste heat to efficiently extract water from said waste material without losing heat to the environment, a cooling interface to reduce the temperature of said moving air stream as said moving air stream moves across said cooling interface; and a condensate collection area wherein said apparatus can recover water using less than 40 watt-hours of energy per gallon.

### Claim 2 (depends on 1)

The apparatus of claim 1, wherein said moving airstream is continuously moving.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein said moving air stream is continuously recirculated.

### Claim 4 (depends on 3)

The apparatus of claim 3, wherein heat emitted from said cooling interface is used to heat said moving air stream.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein said component for generating a moving air stream is selected from a group consisting of: a fan, a blower, a mechanical generator, a wind capture device, a hydro-powered device, a solar-powered device, an electrically-powered device, and a thermal gradient.

### Claim 6 (depends on 1)

The apparatus of claim 1, which further includes a desiccant material interface.