2. Introduction..
⢠Hydrogen is most abundant element in
luminous universe
⢠It rarely found in earth as H2
⢠Largest reservoar of hydrogen in the world
⢠Hydrogen as renewable energy with very good
prospect
⢠Producing the Hydrogen
4. Physical Properties..
⢠Second lowest boiling point (-272.78 C)
⢠Density ; 0.08375 kg/m3
⢠Specific volume : 11.940 m3/kg
⢠Follow the ideal gas law behavior
⢠At high pressure, its behaviour added by
compressibility factor,measured directly
⢠It can diffuse through material
6. Fuel property..
⢠Burns with air and form H2O
⢠HHV : 285.83 kj/mol
⢠LHV : 241.82 kj/mol
⢠Lowest energy density
7. Compared with another fuel..
⢠Methane has >3 times energy content than
hydrogen..
⢠Gasoline has >3000x energy density than
Hydrogen..
⢠Thatâs why we donât burn H2 as fuel..
9. Why fuel cell..
⢠Maximum eficiency 83%
⢠Rest 17% is heat generated
⢠Gasoline engine had efficiency 18-38%
⢠Turbine engine had efficiency 40%
10. Fuel Cell Vehicles..
⢠Operate two times more efficiency (fuel tank
to wheel) than most efficient gasoline cars..
⢠Analyzed as :
7kg Hydrogen Compressed 35 Mpa can travel
700km
equal with 300 l gas tank
equal with 70 l gasoline tank
11. Traditional hydrogen application..
⢠Worlds consumption 50 million tonnes/yr
⢠Ammonia production
⢠Petroleum industry
hydrodesulfurization, hydrocracking
12. Apllication hydrogen in vehicle..
⢠The chicken-or-egg problem..
⢠Efficiency comparison between hydrogen
power to nuclear power..
18. Chemical reforming..
⢠Almost always implies steam, so commonly
called steam Reforming
⢠Basically, consisit of two steps, high
temperature and low temperature
⢠At each steps difference based of catalyst
⢠Low temperature steps, almost used to
increase yield and efficiency
⢠Then, separated until 99.98% pure hydrogen
23. Thermochemical Process..
⢠Thermal decomposition, namely thermolysis
⢠Started with heating pure water,reaction start
2000C and finished 5000C
⢠Thermochemical : using cyclic chemical
reaction, employs reacting chemicals
⢠Can reduce the temperature
⢠Potential to hybridize with nuclear reactor
25. Conclusion..
⢠Hydrogen is very potential future energy
⢠Hydrogen can produced more clean and more
efficient now
⢠Nuclear grown and Hydrogen producing can
move side by side
⢠Study hard and never ending trial and error
make this happen