# US 2017/0284751 A1 · Membrane Microgravity Air Conditioner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0284751 A1 - Document ID: US20170284751A1 - Status: Published application - Kind: A1 - Application number: 15/475,580 - Filed: 2017-03-31 - Published: 2017-10-05 - Earliest claimed: 2016-03-31 - Assignees: Oceaneering International, Inc. - Applicants: Oceaneering International, Inc. - Inventors: Gary Patrick Noyes - Web page: https://patentgrep.com/patent/US20170284751A1 ## CPC - B64G 1/50: for temperature control - B01D 53/263: {by absorption} - B01D 53/268: {by diffusion} - B64G 1/48: for treatment of the atmosphere (B64G1/50 takes precedence) - B64G 1/60: Crew or passenger accommodations - F24F 3/14: by humidification; by dehumidification - B01D 2259/4508: for cleaning air in buildings - F24F 2003/1435: {comprising semi-permeable membrane} - F28F 2255/20: with nanostructures - Y02E 60/36: Hydrogen production from non-carbon containing sources, e.g. by water electrolysis - B64G: COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR - 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) - 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) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Clean condensate production may be produced from humidity in unfiltered air for an extended period of time using a membrane microgravity air conditioner which comprises an air box, comprising an inlet air flow path from a side face through an open top, and a filtering system disposed within the air box. The filtering system comprises one or more trash screens disposed in the inlet air flow path, one or more latent heat exchangers (LHX) disposed in the inlet air flow path, one or more particulate filters disposed in the inlet air flow path intermediate the trash screen and the LHX, one or more thermal control system (TCS) medium temperature loops, and one or more sensible heat exchangers (SHX) disposed in the inlet air flow path intermediate the particulate filter and the LHX. ## Claims ### Claim 1 A membrane microgravity air conditioner, comprising a. an air box comprising: i. a closed bottom; ii. an at least partially open top; and iii. a plurality of side faces connected to the closed bottom and the open top to define an interior, at least one face of the plurality of faces and the top defining an inlet air flow path from that face through the top; and b. a filtering system disposed at least partially within the air box, the filtering system comprising: i. a substantially open filtering system brace; ii. a latent heat exchanger (LHX) disposed in the inlet air flow path, the LHX comprising 1. a predetermined set of nanoporous hydrophilic tubes, comprising a first end and a second end; 2. a solid tube inlet manifold in fluid communication with the first end; and 3. a solid tube outlet manifold in fluid communication with the second end; iii. a particulate filter disposed in the inlet air flow path intermediate the trash screen and the LHX; iv. a thermal control system (TCS) medium temperature loop comprising a coolant; v. a sensible heat exchanger (SHX) disposed in the inlet air flow path intermediate the particulate filter and the LSX, the SHX comprising a fluid inlet and a fluid outlet plumbed in parallel into the TCS medium temperature loop; vi. an air fan disposed in the inlet air flow path; and c. a power source operatively connected to air fan. ### Claim 2 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the plurality of sides comprises four sides. ### Claim 3 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the interior is substantially cuboid. ### Claim 4 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the filtering system brace comprises a trash screen disposed in the inlet air flow path; ### Claim 5 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the filtering system comprises one filtering system per each of the plurality of side faces. ### Claim 6 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the filtering system comprises a hinge disposed on an edge of the filtering system, the hinge configured to allow access to the particulate filter for periodic replacement from outside the air box. ### Claim 7 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the fan is disposed intermediate the LHX and the open top. ### Claim 8 (depends on 1) The membrane microgravity air conditioner of claim 1, further comprising a fan panel disposed in an interior of the air box, the air fan connected to the fan panel. ### Claim 9 (depends on 8) The membrane microgravity air conditioner of claim 8, wherein the fan panel is mounted to the closed bottom. ### Claim 10 (depends on 8) The membrane microgravity air conditioner of claim 8, wherein the fan panel comprises a hinge disposed about an edge of the fan panel and configured to allow access to components inside the air box. ### Claim 11 (depends on 1) The membrane microgravity air conditioner of claim 1, further comprising a water heat exchanger disposed within the air flow and operatively in fluid communication with the air fan. ### Claim 12 (depends on 11) The membrane microgravity air conditioner of claim 11, further comprising a fluid meter operatively disposed in the air flow intermediate the water heat exchanger and the LHX. ### Claim 13 (depends on 12) The membrane microgravity air conditioner of claim 12, wherein the fluid meter comprises a fluid flow meter or an orifice flow meter disposed upstream of the LHX, the orifice flow meter operative to monitor water flow rate and lower water pressure of water flowing through the LHXs below that of air flowing through the LHX. ### Claim 14 (depends on 11) The membrane microgravity air conditioner of claim 11, further comprising: a. a water source in fluid communication with the water heat exchanger; and b. a water heat exchanger coolant source in fluid communication with the water heat exchanger. ### Claim 15 (depends on 11) The membrane microgravity air conditioner of claim 11, further comprising a gear pump disposed within the air box and operatively in fluid communication with the water heat exchanger. ### Claim 16 (depends on 1) The membrane microgravity air conditioner of claim 1, wherein the power source comprises a power connector configured to provide an interface to an external power source. ### Claim 17 (depends on 1) The membrane microgravity air conditioner of claim 1, further comprising a communications data port operatively in communication a data communications network. ### Claim 18 A method of providing clean condensate production from humidity in unfiltered air for an extended period of time using a membrane microgravity air conditioner, the membrane microgravity air conditioner comprising an air box comprising a closed bottom, an at least partially open top, and a plurality of faces connected to the closed bottom and the open top to define an interior, a face of the plurality of faces and the top defining an inlet air flow path from that face through the open top, and a filtering system disposed within the air box, the filtering system comprising a trash screen disposed in the inlet air flow path, a latent heat exchanger (LHX) disposed in the inlet air flow path, a particulate filter disposed in the inlet air flow path intermediate the trash screen and the LHX, a Thermal Control System (TCS) Medium Temperature Loop comprising a coolant, a sensible heat exchanger (SHX) disposed in the inlet air flow path intermediate the particulate filter and the LSH, the SHX plumbed in parallel into the Thermal Control System (TCS) Medium Temperature Loop, a fan disposed in the inlet air flow path, and a power source operatively connected to the fan, the method comprising: a. retaining cold liquid water in hydrophilic pores of the tubes by capillary action; b. allowing water vapor to condense from air flowing around the outside of the tubes into the retained cold water; and c. allowing the water vapor to flow through the tube walls into the cold water flowing through the tubes, in response to the small pressure difference between the air outside the tubes and the water inside the tubes. ### Claim 19 (depends on 18) The method of claim 18, wherein the membrane microgravity air conditioner further comprises a gear pump disposed within the air box and operatively in fluid communication with the water heat exchanger, the method further comprising allowing cool air flowing through the air box to act as a convective heat sink for the gear pump.