United States Department of Transportation
i
Clean air program : use of hydrogen to power the advanced technology transit bus (ATTB) : an assessment
-
1997-11-01
[PDF-3.69 MB]
Details:
-
Creators:
-
Corporate Contributors:
-
Subject/TRT Terms:
-
Publication/ Report Number:
-
DOI:
-
Resource Type:
-
TRIS Online Accession Number:00746533
-
OCLC Number:38881741
-
Edition:Final Report; July 1996-June 1997
-
Corporate Publisher:
-
NTL Classification:NTL-PUBLIC TRANSPORTATION-Bus Transportation;NTL-ENERGY AND ENVIRONMENT-ENERGY AND ENVIRONMENT;NTL-ENERGY AND ENVIRONMENT-Air Quality;NTL-ENERGY AND ENVIRONMENT-Alternative Fuels;
-
Abstract:The Advanced Technology Transit Bus (ATTB), developed under primary funding from
the U.S. DOT/Federal Transit Administration (FTA), currently uses a power plant
based on a natural gas burning IC engine-generator set. FTA is interested in
demonstrating the use of a hydrogen fuel cell-based power plant on the ATTB.
This report analyzes several issues related to the proposed demonstration
project including hydrogen safety, hydrogen storage options, and total hydrogen
requirements. A preliminary comparative assessment of the hazards and risks
posed by useful energy equivalent quantities of hydrogen, methane, and gasoline,
has been performed. This study indicates that hydrogen and methane have almost
equal risks whereas gasoline has substantially higher risk. The reasons for a
such a conclusion are indicated. The total quantity of hydrogen needed for a
120-km Central Business District operation cycle for an ATTB using a solid
polymer electrode fuel cell is estimated to be 15.2-kg/day. This amount of
hydrogen can be stored as a compressed gas on the bus in currently available
CNG tanks at 25 MPA (3,600 psig) and be within the space and weight limitations
of ATTB. The pros and cons of other types of hydrogen storage both on-board
the bus and in the fueling station are discussed; only compressed gas storage
is found to be technically and economically feasible.
-
Format:
-
Funding:
-
Collection(s):
-
Main Document Checksum:
-
Download URL:
-
File Type:
