Title:
【発明の名称】加湿ガス導入または供給システム
Document Type and Number:
Japanese Patent JP2003506656
Kind Code:
A
Abstract:
Water vapor is introduced into an inlet air stream (16) of an engine (12), for example, by a pervaporation process through a non-porous hydrophilic membrane (18). A water reservoir (20), which can contain contaminated water, provides a vapor pressure gradient across the hydrophilic membrane (18) into the inlet air stream (16), while the rate of delivery of the water vapor to a cylinder (38-40) is self-regulated by the rate of flow of air across the membrane. The hydrophilic membrane (18) therefore also filters the water from the water reservoir (20) to an extent that pure water vapor is provided to the air inlet stream (16). Delivery of water vapor can nevertheless be controlled using a hood (26) that slides over the hydrophilic membrane to limit its exposed surface area. Alternatively, water vapor is introduced into one or more of the gas streams of a fuel cell by separating the gas stream from the wet exhaust gas stream by a hydrophilic membrane such that moisture passes across the membrane to moisten the gas stream and thereby prevent drying out of the proton exchange membrane.
Inventors:
Mark Christopher Tonkin
Mark Elden Schuchard
Mark Andrew Young
Mark Elden Schuchard
Mark Andrew Young
Application Number:
JP2001515442A
Publication Date:
February 18, 2003
Filing Date:
August 03, 2000
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
Design Technology and Irrigation Limited
Design Technology and Irrigation Limited
International Classes:
B01D69/08; F02B47/04; F02M25/022; F02M25/028; F23C99/00; F23L7/00; F24F6/00; F02M25/032; H01M8/04; H01M8/10; (IPC1-7): F24F6/00; F02M25/022; F02M25/032; H01M8/04
Domestic Patent References:
| JPH0370848A | 1991-03-26 | |||
| JPH116640A | 1999-01-12 | |||
| JPH0960933A | 1997-03-04 | |||
| JPH1019279A | 1998-01-23 | |||
| JPH08219504A | 1996-08-30 |
Foreign References:
| US4769273A | 1988-09-06 | |||
| US4725481A | 1988-02-16 |
Attorney, Agent or Firm:
Yoshikazu Tani (2 outside)