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 Title: |
US5368786:
Apparatus and methods for humidity control
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Dinauer, William R.; Waunakee, WI
Otis, David R.; Madison, WI
El-Wakil, Mohamed M.; Madison, WI
Vignali, John C.; Waunakee, WI
Macaulay, Philip D.; Madison, WI
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| Assignee: |
Wisconsin Alumni Research Foundation, Madison, WI
other patents from WISCONSIN ALUMNI RESEARCH FOUNDATION (631280) (approx. 1,178)
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| Published / Filed: |
1994-11-29
/ 1992-09-30
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| Application Number: |
US1992000954121
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| IPC Code: |
Advanced:
B01D 53/26;
F24F 3/14;
G05D 22/02;
Core:
F24F 3/12;
G05D 22/00;
more...
IPC-7:
F02M 15/00;
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| ECLA Code: |
B01D53/26P; F24F3/14; G05D22/02;
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| U.S. Class: |
Current:
261/130;
062/315;
128/203.12;
128/203.27;
165/140;
261/154;
Original:
261/130;
062/315;
165/140;
261/154;
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| Field of Search: |
261/130,95,91,154
165/140,19
062/315
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| Government Interest: |
This invention was made with United States Government support awarded by the National Aeronautics and Space Administration (NASA), Grant NO. NAGW-975. The United States Government has certain rights in this invention.
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| Priority Number: |
| 1992-09-30 |
US1992000954121 |
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| Abstract: |
Apparatus is provided which controls humidity in a gas. The apparatus employs a porous interface that is preferably a manifolded array of stainless steel tubes through whose porous surface water vapor can pass. One side of the porous interface is in contact with water and the opposing side is in contact with gas whose humidity is being controlled. Water vapor is emitted from the porous surface of the tubing into the gas when the gas is being humidified, and water vapor is removed from the gas through the porous surfaces when the gas is being dehumidified. The temperature of the porous interface relative to the gas temperature determines whether humidification or dehumidification is being carried out. The humidity in the gas is sensed and compared to the set point humidity. The water temperature, and consequently the porous interface temperature, are automatically controlled in response to changes in the gas humidity level above or below the set point. Any deviation from the set point humidity is thus corrected.
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| Attorney, Agent or Firm: |
Olson & Hierl, Ltd. ;
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| Primary / Asst. Examiners: |
Wayner, William E.;
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| Maintenance Status: |
E3 Expired Check current status
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| INPADOC Legal Status: |
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| Family: |
None
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First Claim:
Show all 30 claims |
What is claimed is:
1. A manifolded porous tube array for humidification and dehumidification of a gas comprising in combination:
- (a) a pair of spaced, opposed elastomeric sealing gasket plates, each plate having an inside face and an outside face and perimeter portions;
- (b) a plurality of porous tubes arrayed in spaced relationship to one another, each one of said tubes having exterior circumferential surface portions and a pair of opposite ends, said exterior surface portions that are adjacent each said opposite end of each said tube being slidably but sealingly positioned in a different respective one of said gasket plates;
- (c) a pair of manifold means, each one being sealingly associated with said perimeter portions and generally enclosing said outside face of a different one of each of said gasket plates with all said tube ends that are so positioned in each gasket plate communicating with a generally fluid tight manifold chamber that is defined by the combination of the adjacent one of said manifold means and the associated said gasket plate, each one of said manifold means further including hole means for conduit association so that a fluid is circulatable from said hole means of one of said manifold means through said tubes to said hole means of the other of said manifold means; and
- (d) spanner means which circumscribes said tube plurality and which has longitudinally opposite ends that are each associated with a different one of said manifold means so that a chamber is defined by said spanner means and said gasket plates through which chamber said tube plurality extends, said spanner means including at least two passageway means which are positioned so that a fluid is circulatable through said chamber from one said passageway means about said exterior circumferential surface portions of said tubes to another of said passageways means.
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| Background / Summary: |
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| Drawing Descriptions: |
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| Description: |
Show description
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| Forward References: |
Show 19 U.S. patent(s) that reference this one
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| Foreign References: |
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PDF |
Publication |
Date |
IPC Code |
Assignee |
Title |
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JP55033572
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1980-03 |
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SU0787075
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1980-12 |
B01D 53/26
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IVANO-FRANKOVSKIJ I NEFTI GAZA
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GAS DRYING METHOD |
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| Other Abstract Info: |
DERABS G95-014099
DERG95-014099
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| Other References: |
"Astroculture: Growing Plants in the Micro-Gravity of Space", 21st Century Gardner, vol. 3, Issue 2, pp. 43-48, May 1989.
"Options for Transpiration Water Removal in a Crop Growth System Under Zero Gravity Conditions", Blackwell et al., SAE 21st Inter. Conf. on Environ. Systems, Jul. 1991.
"The Transpirator-Cooler-A Space-Cooling System", Ernst et al., SAE 22nd Inter. Conf. on Enriron. Systems, Jul. 1992.
"A Novel Membrane Device for the Removal of Water Vapor and Water Droplets from Air", Ray et al., SAE 22nd Inter. Conf. on Environ. Systems, Jul. 1992.
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