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003 OCoLC;

005 20141212055235.0;

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007 cr cn|||||||||;

008 080513s2000 mdua obt f000 0 eng d;

029 0 a| DTICEb| ADA374909;

035 a| (Sirsi) o227916340;

035 a| (OCoLC)227916340;

049 a| ERE#;

074 a| 0324-A-01 (online);

086 0 a| D 101.133:2064;

245 00 a| Performance and evaluation of bipolar fuel cell stacks /c| Deryn Chu [and others].;

260 a| Adelphi, MD :b| U.S. Army Research Laboratory,c| [2000];

300 a| 1 online resource (iii, 19 pages) :b| illustrations.;

336 a| text2| rdacontent;

337 a| computer2| rdamedia;

338 a| online resource2| rdacarrier;

490 1 a| ARL-TR ;v| 2064;

500 a| Title from title screen (viewed on Dec. 28, 2010).;

500 a| "February 2000.";

504 a| Includes bibliographical references.;

506 a| Approved for public release.;

513 a| Progress;b| 10/98-9/99.;

520 a| Under a joint technology planning annex (TPA) agreement, fuel cell groups at the U.S. Army Research Laboratory (ARL) and the U.S. Army Communications-Electronics Command (CECOM) worked together to develop Army power sources for soldier applications. Two 50-W bipolar fuel cell stacks designed by CECOM were extensively evaluated. The performance of the stacks depended significantly on the environmental temperature. Decreasing environmental temperature granted better heat dissipation in the stacks, resulting in improved stack performance. Long-term performance of 62 W was obtained at low temperature ( -5 deg C). Higher environmental temperatures caused an increase in stack surface temperature. When the stack surface temperature reached 43 deg C, the stack voltage dropped to zero within a short time. The maximum power density for long-term operation was 97.3 W/kg, or 167 W/L. The average hydrogen utilization efficiency was 95 percent. The water production efficiency was dependent on the discharge currents, varying from 40 percent (at 1.0 A) to 90 percent (at 2.5 A).;

536 a| AMSRL-SE-DCb| DA PRb| PE: 62120A;

650 0 a| Fuel cellsx| Testing.=| ^A24215;

650 0 a| Power (Mechanics)=| ^A21136;

650 17 a| Electrochemical Energy Storage.2| scgdst;

650 17 a| Fuel cells.2| dtict;

650 27 a| Environmental tests.2| dtict;

650 27 a| Stacking.2| dtict;

650 27 a| Bipolar systems.2| dtict;

650 27 a| Joint test and evaluation.2| dtict;

700 1 a| Chu, Deryn.=| ^A1033239;

710 2 a| U.S. Army Research Laboratory.=| ^A367731;

710 1 a| United States.b| Army.b| Communications Electronics Life Cycle Management Command.=| ^A1035739;

830 0 a| ARL-TR (Aberdeen Proving Ground, Md.) ;v| 2064.=| ^A566074;

856 40 u| http://purl.fdlp.gov/GPO/gpo901;

949 a| Click on web addressw| ASISh| JOYNER94;

596 a| 1;

998 a| 2406245;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 2406245-1001l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 2/24/2011x| EDOCUMENTz| JERESOURCE;

Performance and evaluation of bipolar fuel cell stacks / Deryn Chu [and others].

Other author	Chu, Deryn.
Other author	U.S. Army Research Laboratory.
Other author	United States. Army. Communications Electronics Life Cycle Management Command.
Format	Electronic
Publication Info	Adelphi, MD : U.S. Army Research Laboratory, [2000]
Description	1 online resource (iii, 19 pages) : illustrations.
Supplemental Content	http://purl.fdlp.gov/GPO/gpo901
Subjects	United States. Army--Equipment. --Testing. Fuel cells--Testing. Power (Mechanics)

Series	ARL-TR ; 2064 ARL-TR (Aberdeen Proving Ground, Md.) ; 2064. ^A566074
Abstract	Under a joint technology planning annex (TPA) agreement, fuel cell groups at the U.S. Army Research Laboratory (ARL) and the U.S. Army Communications-Electronics Command (CECOM) worked together to develop Army power sources for soldier applications. Two 50-W bipolar fuel cell stacks designed by CECOM were extensively evaluated. The performance of the stacks depended significantly on the environmental temperature. Decreasing environmental temperature granted better heat dissipation in the stacks, resulting in improved stack performance. Long-term performance of 62 W was obtained at low temperature ( -5 deg C). Higher environmental temperatures caused an increase in stack surface temperature. When the stack surface temperature reached 43 deg C, the stack voltage dropped to zero within a short time. The maximum power density for long-term operation was 97.3 W/kg, or 167 W/L. The average hydrogen utilization efficiency was 95 percent. The water production efficiency was dependent on the discharge currents, varying from 40 percent (at 1.0 A) to 90 percent (at 2.5 A).
General note	Title from title screen (viewed on Dec. 28, 2010).
General note	"February 2000."
Bibliography note	Includes bibliographical references.
Access restriction	Approved for public release.
Report note	Progress; 10/98-9/99.
Funding information	AMSRL-SE-DC DA PR PE: 62120A
GPO item number	0324-A-01 (online)
Govt. docs number	D 101.133:2064

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Performance and evaluation of bipolar fuel cell stacks / Deryn Chu [and others].

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