 |
|
|
|
 |
Home > New energy > Hydrogen Energy |
|
|
|
|
|
|
 |
Hydrogen Energy?
|
|
|
| |
 Alternative energy to save and use energy in the hydrogen form
Since hydrogen is combined with oxygen and goes to water after combustion, no air pollution emits. New
technologies of each stage of manufacturing, storage and use are developed.
|
|
|
Development Contents by Technology |
|
|
| |
|
|
|
|
|
| Large |
|
Medium |
|
Contents |
|
|
|
|
|
| Production |
|
Hydrogen from water
(Globally at the research level) |
|
Electrolysis (SPE, Solar heat, Wind Power and other alternative power use) |
|
|
|
|
|
Low temperature pyrolsis (oxide, sulfur compound, chloride, fluoride, iodide etc) |
|
|
|
|
|
Photocatalyst (Metal Oxide, Perovskite, Zeolite etc) |
|
|
|
|
|
Bio (Direct/Indirect photosynthesis, anaerobic fermentation, photosynthesis fermentation etc) |
|
|
|
|
|
Hydrogen from fossil fuel |
|
Steam Reforming (Commercialized) |
|
|
|
|
|
Plasma Reforming (Reactor, Plant Construction) → Commercialized in US |
|
|
|
|
|
High Temp Pyrolysis (Theory established, catalyst, reactor) → Being developed in US |
|
|
|
|
|
Hydrogen Purification |
|
High-purity hydrogen manufacturing (PSA, MH etc) → Tech. established in advanced countries |
|
|
|
|
|
| Storage |
|
Physical storage |
|
Air storage (commercialized) |
|
|
|
|
|
Liquid storage (storage container, extreme-low temperature research etc.) → Commercialized in Germany |
|
|
|
|
|
Solid storage (materials, high capa. storage, weight etc) → Partial Commercialization |
|
|
|
|
|
CNT (material, compound, process technology etc) → Advanced countries at the developing stage |
|
|
|
|
|
Chemical storage |
|
Methanol using CO, Ethanol compound(Commercialized) |
|
|
|
|
|
| Use |
|
Use |
|
House(electricity, heat), Industry(Semi conductor, electronics, steel etc.), Transportation (automobile, ship, airplane) → since the production/storage technologies of hydrogen are not established yet, no practical cases exist |
|
|
|
|
|
Safety Measure |
|
Back fire protection etc. |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
Advantages and Disadvantages of Hydeogen Energy |
|
|
| |
|
|
|
| Advatages |
|
Disadvantages |
|
|
|
Since produced from water or organic materials, the
available amount is almost unlimited.
During combusting, except for the vary small amount
of Nox, no air pollution emit → Min.
environment pollution, no CO₂emission
Available for almost all energy systems such as
industrial raw materials, general fuel, hydrogen car, hydrogen airplane and fuel cells.
Available for sustainable energy and auto-supply
|
|
Many problems should be solved to commercialize
such as mass-production technology, storage, shipment, utilization technology
Since it exists as a gas at room temperature,
normal pressure (boiling point -253℃), the energy
density per unit volume is low. Not easy to store
and transport
Safety Problem ? Large explosive scale and easy to
ignite. Since the hydrogen flame has no color, it is
difficult to identify but spreads very fast.
|
|
|
|
|
| |
|
|
|
|
|
