Accession Number:

ADA402908

Title:

Numerical Models for Condenser and Evaporator Components of Fuel Cells

Descriptive Note:

Final rept. Nov 2000-Dec 2001

Corporate Author:

GEORGIA INST OF TECH ATLANTA SCHOOL OFMECHANICAL ENGINEERING

Report Date:

2002-04-19

Pagination or Media Count:

105.0

Abstract:

The objective of this project was to develop analytical models and computer programs for the design and analysis of evaporator and condenser components of modern fuel cells. Mechanistic models were developed for boiling and two-phase flow phenomena in Microchannel-based boilers. The modeled systems included straight Microchannel with known inletexit boundary conditions helicoidally micro-channels with known inletexit boundary conditions straight, parallel micro-channels connected to common inlet and exit plena and straight, parallel micro-channels connected to common inlet and exit manifolds. Models were also developed for fog formationdroplet growth resulting from the depressurization of a vapor-non-condensable mixture in an expander, and for droplet removal due to droplet-wall impaction when the aforementioned vapor-non-condensable-droplet mixture flows through a cyclone-type separator. Based on these models, computer programs suitable for design and analysis applications were developed.

Subject Categories:

  • Electrochemical Energy Storage
  • Theoretical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE