Abstract
We have developed an electro-chemical model of a DMFC (Direct methanol fuel cell) stack to analyze its performance. The model includes methanol solution at the anode to "cross over" to the cathode through MEA (membrane electrode assembly), which reduces the system efficiency and increases fuel consumption. BOP (Balance of plants) system - condenser, cooler, and methanol solution tank - was modeled. Dynamic simulation was performed to evaluate and develop a control algorithm of the fuel cell system for an efficient operation of DMFC We simulated the effects of the varying total UA (overall heat transfer coefficient), and proposed minimum UA of the condenser and cooler. When the volume of the methanol solution tank decreases below a certain level, ON/OFF based control algorithm leads to an unstable fuel cell operation. By adopting PID based control algorithm, the system has better controllability of methanol concentration and power generation in response to load change under the same methanol solution tank volume.
| Original language | English |
|---|---|
| Title of host publication | ECS Transactions |
| Pages | 1519-1524 |
| Number of pages | 6 |
| Volume | 16 |
| Edition | 2 PART 2 |
| DOIs | |
| Publication status | Published - 2008 |
| Event | Proton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting - Honolulu, HI, United States Duration: 2008 Oct 12 → 2008 Oct 17 |
Other
| Other | Proton Exchange Membrane Fuel Cells 8, PEMFC - 214th ECS Meeting |
|---|---|
| Country | United States |
| City | Honolulu, HI |
| Period | 08/10/12 → 08/10/17 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
Design and control method for compact BOP of direct methanol fuel cell. / Chang, Y. S.; Cho, C.; Kim, Yong Chan.
ECS Transactions. Vol. 16 2 PART 2. ed. 2008. p. 1519-1524.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Design and control method for compact BOP of direct methanol fuel cell
AU - Chang, Y. S.
AU - Cho, C.
AU - Kim, Yong Chan
PY - 2008
Y1 - 2008
N2 - We have developed an electro-chemical model of a DMFC (Direct methanol fuel cell) stack to analyze its performance. The model includes methanol solution at the anode to "cross over" to the cathode through MEA (membrane electrode assembly), which reduces the system efficiency and increases fuel consumption. BOP (Balance of plants) system - condenser, cooler, and methanol solution tank - was modeled. Dynamic simulation was performed to evaluate and develop a control algorithm of the fuel cell system for an efficient operation of DMFC We simulated the effects of the varying total UA (overall heat transfer coefficient), and proposed minimum UA of the condenser and cooler. When the volume of the methanol solution tank decreases below a certain level, ON/OFF based control algorithm leads to an unstable fuel cell operation. By adopting PID based control algorithm, the system has better controllability of methanol concentration and power generation in response to load change under the same methanol solution tank volume.
AB - We have developed an electro-chemical model of a DMFC (Direct methanol fuel cell) stack to analyze its performance. The model includes methanol solution at the anode to "cross over" to the cathode through MEA (membrane electrode assembly), which reduces the system efficiency and increases fuel consumption. BOP (Balance of plants) system - condenser, cooler, and methanol solution tank - was modeled. Dynamic simulation was performed to evaluate and develop a control algorithm of the fuel cell system for an efficient operation of DMFC We simulated the effects of the varying total UA (overall heat transfer coefficient), and proposed minimum UA of the condenser and cooler. When the volume of the methanol solution tank decreases below a certain level, ON/OFF based control algorithm leads to an unstable fuel cell operation. By adopting PID based control algorithm, the system has better controllability of methanol concentration and power generation in response to load change under the same methanol solution tank volume.
UR - http://www.scopus.com/inward/record.url?scp=63149179128&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=63149179128&partnerID=8YFLogxK
U2 - 10.1149/1.2981992
DO - 10.1149/1.2981992
M3 - Conference contribution
SN - 9781566776486
VL - 16
SP - 1519
EP - 1524
BT - ECS Transactions
ER -