Fuel Cell Characteristics

Transcription

1 Fuel Cell Characteristics e - load depleted fuel and product gases out depleted oxidant and product gases out H 2 OH - O 2 H 2 O H 2 O H 2 H + O 2 H 2 O H 2 CO = O 2 CO 3 2 CO 2 H 2 O H 2 O 2 H 2 O O = AFC PEMFC PAFC MCFC SOFC C C 205 C 650 C C fuel in oxidant in anode electrolyte cathode

2 Fuel Cells Characteristics

3 Comparison of Fuel Cell Technologies

4 Fuels For Fuel Cell Hydrogen Methanol Natural gas Propane Gasoline Other liquid hydrocarbons desulfurized gasoline hydrocrackate alkylate/isomerate gas-to to-liquid light paraffin hydrotreated condensate Reformer

5 Applications Small appliances Power packs Material Handling Auxiliary Power Units Aviation Ground Support Equipment Fuel cell vehicles (FCVs( FCVs) Power generations (Plants)

6 Sizes to fit applications

7 Small Applications Battery replacement Cell phones, laptops, mp3 Powering medical sensors Source:

8 Power Pack Applications Back-up unit Material handling Source:

9 Fuel Cell Vehicles (FCVs( FCVs) EV family PEMFCs BoP needed Dynamics concerned Hybridization

10 Why PEMFC for FCVs? Simple Quick start-up Fast response High efficiency High power density (kw/kg and kw/l) Zero emissions

11 System Configurations of Fuel Cell Vehicles 1) Fuel cell provides all the power 2) Fuel cell provides nominal power battery provides peak power (parallel hybrid) 3) Fuel cell charges the batteries (series hybrid) 4) Fuel cell as an auxiliary power unit el. 1) fuel cell motor 2) fuel cell battery el. motor el. 3) fuel cell battery 4) motor IC engine fuel cell

12 Configurations of FCVs Direct hydrogen fuel cell system Direct methanol fuel cell system Fuel cell system with a reformer Fuel Compressed hydrogen Liquid hydrogen Hydrogen in metal hydrides Hydrogen in chemical hydrides Ammonia Methanol Gasoline Other

13 Some of FCVs

14 Sample of FCV (Nissan)

15 Sample of FCV (Nissan)

16 Hydrogen Refueling Infrastructure Photos: DTE DTE/BP Power Park, Southfield, MI LAX refueling station Hydrogen and gasoline station, WA DC Photo:Shell Hydrogen Chino, CA Photo: H2CarsBiz

17 Power Generation Applications PEMFC SOFC MCFC PAFC Source:

18 Fuel Cell System Requirements (Depend on application) Automotive Primary Power Back-up Power Power Fuel Life High Efficiency Instant Start Output Mode Operation Preferred Voltage Heat Recovery Water Balance Size and Weight Extreme Conditions Cost kw Reformate/H 2 5,000 hrs Critical Very Important Variable Intermittent >300 V Not Needed Very Important Critical Critical <$100/kW <$50/kW 1-10 & >200 kw Reformate >40,000 hrs Critical Not Important Variable Constant >110 V AC Very Important Very Important Not Critical Not Critical <$1000/kW <$200/kW 1-10 kw Hydrogen <2,000 hrs Not Critical Very Important Constant Intermittent 48 V DC Not Needed Not Critical Not Critical Important <$1000/kW <$400/kW

19 Barriers To Commercialization Fuel infrastructure High cost More expensive than competing technologies Actual price depends on production numbers Insufficient durability Performance issues Lifetime lower than competing technology Need research on lifetime issues, performance is good

20 R & D Needs Better performance higher voltage, better stability, transients, start-up, survivability Susceptibility to contaminants Lower cost materials, manufacturing processes, manufacturing scale simpler systems Longer life/durability Hydrogen/fuels infrastructure hydrogen production, storage, transport, distribution technical and socio-economic issues

21 Some Players (PEMFCs( PEMFCs)

22 CURRENT STATE OF THE TECHNOLOGY (Cost projection) 100,000 System Cost ($/kw) 10,000 1, Innovators / Early Adopters Remote / Premium Backup & Standby Initial Mass Markets Automotive

23 Why Fuel Cells? World energy crisis Energy system Hydrogen economy (Local) Environmental friendly technology Promise of high efficiency No moving parts/promise of long life Modular Quiet (Simple/promise of low cost)

24 Why Fuel Cells?

25 Why Fuel Cells?

26 Why Fuel Cells?

27 Thank you Clean Energy Systems Research Group (CES) School of Energy Environment and Materials King Mongkut s University of Technology Thonburi 126 Pracha-Utis Road Thungkru Bangkok Phone: (02) Fax: (02) (