Accession Number:

ADA562618

Title:

Improved Round Trip Efficiency for Regenerative Fuel Cell Systems

Descriptive Note:

Final rept. 11 Mar 2011-11 May 2012

Corporate Author:

PROTON ENERGY SYSTEMS INC WALLINGFORD CT

Personal Author(s):

Report Date:

2012-05-11

Pagination or Media Count:

23.0

Abstract:

In developing technology for air independent undersea vehicle missions, a ground-test breadboard system was adapted and utilized to prove advanced components that enable closed-loop, zero emission, low signature energy storage. The system utilizes proton exchange membrane PEM fuel cell and electrolysis technology with proven commercial reliability, and a balance-of-plant primarily consisting of commercial-off-the-shelf COTS components. Initial durability testing measured the magnitude of reactant loss to the ambient atmosphere, before replacing components known to contribute to this loss as observed during tests in a previous program. Advanced components to mitigate these losses were designed and tested at a bench-top level before integrated testing within the breadboard system. A final round of cyclic testing was conducted with advanced reactant circulation during fuel cell power generation as well as complete hydrogen recovery during the electrolysis recharge period.

Subject Categories:

  • Electrochemical Energy Storage

Distribution Statement:

APPROVED FOR PUBLIC RELEASE