# US 9,049,752 B2 · Generating electrical power utilizing surface-level hot air as the heat source, high atmosphere as the heat sink and a microwave beam to initiate and control air updraft > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,049,752 B2 - Document ID: US9049752B2 - Status: Granted - Kind: B2 - Application number: 13/865,556 - Filed: 2013-04-18 - Published: 2013-09-05 - Granted: 2015-06-02 - Earliest claimed: 2009-07-20 - Assignees: Aella SA - Applicants: Slobodan Tepic - Inventors: Slobodan Tepic - Web page: https://patentgrep.com/patent/US9049752B2 ## CPC - H05B 6/6426: {Aspects relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord} - F03D 1/04: having stationary wind-guiding means, e.g. with shrouds or channels (F03D9/35 takes precedence) - F03D 9/00: Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations (hybrid wind-photovoltaic energy systems for the generation of electric power H02S10/12) - F03D 9/007: {the wind motor being combined with means for converting solar radiation into useful energy} - F03D 9/22: the apparatus producing heat - F03D 9/25: the apparatus being an electrical generator (F03D9/22 takes precedence) - F03D 9/39: by circulation or vortex formation - F03D 1/02: having a plurality of rotors - F03D 13/25: specially adapted for offshore installation - F05B 2220/60: making use of surplus or waste energy - F05B 2240/131: by means of vertical structures, i.e. chimneys - F05B 2240/93: on a structure floating on a liquid surface - F05B 2260/24: for draft enhancement in chimneys, using solar or other heat sources - Y02E 10/46: Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines - Y02E 10/72: Wind turbines with rotation axis in wind direction - Y02P 80/20: using renewable energy - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - F03D: WIND MOTORS - F05B: INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract The invention describes a method of generating electrical power utilizing hot surface air as the heat source, high atmosphere as the heat sink and a microwave beam aimed upward providing updraft to initiate and control the large-scale air circulation. The frequency of the microwave beam is centered at approximately 60 GHz, within the absorption band of molecular oxygen, so as to result in beam penetration to an altitude of several kilometers. The power plant comprises a high-power microwave source, e.g. a bank of gyrotrons, one or more turbine-generator sets, and—optionally—a condenser/cyclone (if on a floating platform). The plant can also provide clean water from condensation out of humid, sea level air. The plant could also be used to remove atmospheric carbon dioxide from large quantities of air. The dynamic chimney produced by the microwave beam could alternatively be deployed in conjunction with a solar heat power plants, industrial chimneys, and cooling towers of conventional power plants to increase their effective height. ## Claims ### Claim 1 A system for generating electricity comprising: a source of a high power microwave beam, wherein the beam is positioned vertically to create a convective cell comprising an atmospheric air updraft; and at least one generator positioned within an airflow created by the atmospheric air updraft to generate electricity. ### Claim 2 (depends on 1) The system of claim 1, wherein the high power microwave beam has a frequency centered within an absorption band of molecular oxygen. ### Claim 3 (depends on 1) The system of claim 1, wherein the high power microwave beam has a frequency centered at approximately 60 GHz. ### Claim 4 (depends on 1) The system of claim 1, further comprising: an atmospheric convective cell powered by solar heat anchored by the high power microwave beam. ### Claim 5 (depends on 4) The system of claim 4, wherein the atmospheric convective cell is positioned over a floating power plant, and wherein the generator is positioned to receive kinetic power from the convective cell. ### Claim 6 (depends on 5) The system of claim 5, further comprising: means for condensing moisture out of the air flowing through the plant to produce clean water. ### Claim 7 (depends on 5) The system of claim 5, further comprising: means for removing carbon dioxide from the air flowing through the plant. ### Claim 8 (depends on 4) The system of claim 4, wherein the atmospheric convective cell is positioned over a land-based power plant and wherein the generator is positioned to receive kinetic power from the convective cell. ### Claim 9 (depends on 1) The system of claim 1, further comprising a plurality of input vanes positioned around the high power microwave beam to create a vortex in the atmospheric air updraft. ### Claim 10 (depends on 1) The system of claim 1, further comprising at least one gyrotron positioned to create the high power microwave beam. ### Claim 11 (depends on 10) The system of claim 10, further comprising a plurality of gyrotrons. ### Claim 12 (depends on 1) The system of claim 1, wherein the high power microwave beam is positioned to supplement updraft over a cooling tower. ### Claim 13 A system to create an atmospheric updraft comprising a source of a high power microwave beam, wherein the beam is positioned vertically to create a convective cell comprising an atmospheric air updraft. ### Claim 14 (depends on 13) The system of claim 13, wherein the high power microwave beam is positioned to supplement updraft over a land-based solar power plant, and wherein the solar power plant includes a green house roof to facilitate solar heat entrapment. ### Claim 15 (depends on 13) The system of claim 13, wherein the high power microwave beam is positioned to supplement updraft over a chimney.