Hydrogen powered cars
Hydrogen powered cars - [hydrogen storage methods and materials]
There are two conventional hydrogen storage method, a method using a high pressure cylinder (hydrogen cylinder) to store hydrogen, but the hydrogen storage cylinder volume is small, and there is the danger of explosion; Another way is to store liquid hydrogen, but liquid storage box is very large, need excellent thermal insulation device. In recent years, a new simple method for hydrogen storage have emerged, namely the use of hydrogen storage alloy (metal hydride) to store hydrogen. Studies have shown that, under certain conditions of temperature and pressure, some of the metal can be a large number of "absorption" of hydrogen, the reaction of metal hydrides, and release heat. connecting rod Thereafter, the metal hydride is heated, they will break down, the hydrogen stored therein is released. These will "absorb" the metal hydrogen called hydrogen storage alloys. Its hydrogen storage capacity is very strong. Hydrogen storage density per unit volume, is the same temperature, 1,000 times under pressure of gaseous hydrogen, i.e., the equivalent of a high-pressure hydrogen storage 1000 atm. The hydrogen storage alloy are solid, through heating or reduced pressure with hydrogen when hydrogen stored therein is released, so that an extremely simple ideal hydrogen storage method. At present, research and development of hydrogen storage alloys, conrod titanium mainly hydrogen storage alloys, zirconium based hydrogen storage alloy, iron-based hydrogen storage alloys and rare earth based hydrogen storage alloys.
There the hydrogen-absorbing alloy hydrogen storage processes in the chemical energy into mechanical energy or heat energy conversion function. Hydrogen storage alloy exotherm during desorption endotherm during hydrogen absorption, the use of such heat - the heat absorbing cycle, can be hot storage and transport, producing cooling or heating equipment. In addition, it can be used for purification and recovery of hydrogen, which hydrogen can be purified to a high purity. For example, the use of hydrogen storage alloy, can be obtained at a low cost ultra purity higher than 99.9999% pure hydrogen. The rapid development of the hydrogen storage alloy, to use hydrogen has opened up a broad road. At present, China has successfully developed a hydrogen cars, which use hydrogen storage material 90 kg, can travel 40 kilometers per hour over 50 km. In the future, not only will the use of fuel cell cars, aircraft, ships, spacecraft and other vehicles will also use fuel cells, as their primary or secondary source of energy. Also due to the extensive use of nickel-cadmium batteries (Ni-Cd) cadmium toxic waste batteries so complex environmental contamination. Compared with nickel-metal hydride batteries nickel cadmium batteries, has a large capacity, safe non-toxic and long life. Another important development in the field of hydrogen storage alloy with nickel-metal hydride batteries (Ni-MH), but also the future application of hydrogen storage materials.
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There are two conventional hydrogen storage method, a method using a high pressure cylinder (hydrogen cylinder) to store hydrogen, but the hydrogen storage cylinder volume is small, and there is the danger of explosion; Another way is to store liquid hydrogen, but liquid storage box is very large, need excellent thermal insulation device. In recent years, a new simple method for hydrogen storage have emerged, namely the use of hydrogen storage alloy (metal hydride) to store hydrogen. Studies have shown that, under certain conditions of temperature and pressure, some of the metal can be a large number of "absorption" of hydrogen, the reaction of metal hydrides, and release heat. connecting rod Thereafter, the metal hydride is heated, they will break down, the hydrogen stored therein is released. These will "absorb" the metal hydrogen called hydrogen storage alloys. Its hydrogen storage capacity is very strong. Hydrogen storage density per unit volume, is the same temperature, 1,000 times under pressure of gaseous hydrogen, i.e., the equivalent of a high-pressure hydrogen storage 1000 atm. The hydrogen storage alloy are solid, through heating or reduced pressure with hydrogen when hydrogen stored therein is released, so that an extremely simple ideal hydrogen storage method. At present, research and development of hydrogen storage alloys, conrod titanium mainly hydrogen storage alloys, zirconium based hydrogen storage alloy, iron-based hydrogen storage alloys and rare earth based hydrogen storage alloys.
There the hydrogen-absorbing alloy hydrogen storage processes in the chemical energy into mechanical energy or heat energy conversion function. Hydrogen storage alloy exotherm during desorption endotherm during hydrogen absorption, the use of such heat - the heat absorbing cycle, can be hot storage and transport, producing cooling or heating equipment. In addition, it can be used for purification and recovery of hydrogen, which hydrogen can be purified to a high purity. For example, the use of hydrogen storage alloy, can be obtained at a low cost ultra purity higher than 99.9999% pure hydrogen. The rapid development of the hydrogen storage alloy, to use hydrogen has opened up a broad road. At present, China has successfully developed a hydrogen cars, which use hydrogen storage material 90 kg, can travel 40 kilometers per hour over 50 km. In the future, not only will the use of fuel cell cars, aircraft, ships, spacecraft and other vehicles will also use fuel cells, as their primary or secondary source of energy. Also due to the extensive use of nickel-cadmium batteries (Ni-Cd) cadmium toxic waste batteries so complex environmental contamination. Compared with nickel-metal hydride batteries nickel cadmium batteries, has a large capacity, safe non-toxic and long life. Another important development in the field of hydrogen storage alloy with nickel-metal hydride batteries (Ni-MH), but also the future application of hydrogen storage materials.
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http://jamendo.infored.mx/blog_audi-s5-sportback-still-escape-being-modified.html
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