Transcript Document

Schematic of Air Bleed System
Flow meter
Air
Filter
Check valve
H2 /CO2 /H2O (out)
PEMFC Research
O2 /H2O (out)
Dept. of Chemical Engineering
University of South Carolina
Performance comparison between CARBEL CLTM and
Single Side ELATTM GDM for 500 ppm CO.
1.0
0.9
0.8
CARBEL CL
Cell voltage (V)
0.7
Neat H2
0.6
0.5
0.4
Single Side ELAT
Single Side ELAT
w/o air bleed
air bleed (5 %)
0.3
CARBEL CL
Single Side ELAT
w/o air bleed
Neat H2
CARBEL CL
air bleed (5 %)
0.2
0.1
0.0
0
200
400
600
800
1000
1200
1400
1600
1800
Current density (mA/cm2)
PEMFC Research
Dept. of Chemical Engineering
University of South Carolina
Performance comparison between CARBEL CLTM and
Single Side ELATTM GDM for 3000 ppm CO.
1.0
0.9
0.8
CARBEL CL
Neat H2
Cell voltage (V)
0.7
SSE
0.6
air bleed (15 %)
0.5
0.4
CARBEL CL
SSE
w/o air bleed
w/o air bleed
0.3
CARBEL CL
SSE
air bleed (15 %)
Neat H2
0.2
0.1
0.0
0
200
400
600
800
1000
1200
1400
1600
1800
Current density (mA/cm2)
PEMFC Research
Dept. of Chemical Engineering
University of South Carolina
Transient performance with 50 and 500 ppm CO at 600 mA/cm2 with
CARBEL CL GDM.
0.8
-0.323
0.7
(V/min) -0.332 -0.417 -0.400 -0.417 -0.400
Cell voltage (V)
0.6
0.5
0.4
Neat H2
50 ppm CO/H2 (Base)
0.056 0.051 0.053 0.053 0.059
0.056
Base Base Base Base Base
Base
Neat H2
0.3
500 ppm CO/H2 for 5 min.
0.2
0.1
0.0
0
1
2
3
4
5
6
7
Time (hr)
PEMFC Research
Dept. of Chemical Engineering
University of South Carolina
8
Transient performance with neat hydrogen and 3000 ppm CO at
600 mA/cm2 with CARBEL CL GDM.
0.8
0.7
0.6
Cell voltage (V)
- 0.971
0.5
-1.410
-1.413
-1.437
-1.437
(V/min)
0.088
0.4
0.3
-1.437
0.092
0.099
0.096
0.094
0.098
(V/min)
Neat H 2 (Base)
Base
Base
Base
Base
Base
Neat H 2 (Base)
0.2
3000 ppm CO/H2 for 5 min.
3000 ppm CO/H2 for 5 min.
0.1
0.0
0
1
2
3
4
Time (hr)
PEMFC Research
Dept. of Chemical Engineering
University of South Carolina
5