Readers ask: How can hydrogen be used as a fuel?

Why is hydrogen a fuel?

Hydrogen is considered an alternative fuel under the Energy Policy Act of 1992. The interest in hydrogen as an alternative transportation fuel stems from its ability to power fuel cells in zero-emission FCEVs, its potential for domestic production, its fast filling time, and the fuel cell’s high efficiency.

Why don’t we use hydrogen as a fuel?

Hydrogen is only as clean as the energy used to produce it. Current hydrogen vehicles use fuel cells to convert the chemical energy to power. Fuel cells are very costly because they are complex and require expensive materials such as platinum.

Why hydrogen is the best fuel?

Hydrogen fuel cells are cleaner and more efficient than traditional combustion-based engines and power plants. Hydrogen and fuel cells can also be used in mobile applications to power vehicles and mobile power packs. The benefits of fuel cells are: Reduced greenhouse gas emissions.

How can hydrogen be stored as a fuel for cars?

Hydrogen can be stored in three ways: As a compressed gas in high-pressure tanks. As a liquid in dewars or tanks (stored at -253°C). As a solid by either absorbing or reacting with metals or chemical compounds or storing in an alternative chemical form.

Why are hydrogen engines a bad idea?

The biggest reason why hydrogen-combustion engines are no good? They create nitrogen oxide, which isn’t good for people or the environment. Even though carbon isn’t part of the hydrogen combustion process, NOx isn’t a compromise as automakers look to zero-emission vehicles.

Is hydrogen a fuel for the future?

Hydrogen is the fuel of the future. Hydrogen is an energy carrier that can be used in internal combustion engines or fuel cells producing virtually no greenhouse gas emissions when combusted with oxygen.

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Are hydrogen cars better than electric?

The fuel cell process of converting hydrogen back to electricity is only 60% efficient, after which you have the same 5% loss from driving the vehicle motor as for a BEV. The grand total is a 62% loss – more than three times as much.

What are the disadvantages of hydrogen?

Some of the disadvantages of hydrogen energy include:

  • Hydrogen Energy is Expensive.
  • Storage Complications.
  • It’s Not the Safest Source of Energy.
  • Tricky to Move Around.
  • It is Dependent on Fossil fuels.
  • Hydrogen Energy Cannot Sustain the Population.

Can a normal car engine run on hydrogen?

Can traditional gasoline-powered cars be converted to run on hydrogen fuel cells? Yes — but it probably makes more sense to start with buses and long-haul trucks than passenger cars

Is hydrogen expensive to produce?

The cost of hydrogen production is an important issue. Hydrogen produced by steam reformation costs approximately three times the cost of natural gas per unit of energy produced. This means that if natural gas costs $6/million BTU, then hydrogen will be $18/million BTU.

What are the pros and cons of hydrogen energy?

Hydrogen fuel cells

Pros: No vehicle emissions other than water vapor. Fuel economy equivalent to about twice that of gasoline vehicles. Hydrogen is abundant, and can be made from renewable energy. Cons: This space-age technology is expensive.

How will hydrogen be used in the future?

It can be transported as a gas by pipelines or in liquid form by ships, much like liquefied natural gas (LNG). It can be transformed into electricity and methane to power homes and feed industry, and into fuels for cars, trucks, ships and planes. Hydrogen can enable renewables to provide an even greater contribution.

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Can I store hydrogen at home?

Hydrogen can be physically stored as either a gas or a liquid. Storage as a gas typically requires high-pressure tanks (5000–10,000 psi tank pressure). Storage of hydrogen as a liquid requires cryogenic temperatures because the boiling point of hydrogen at one atmosphere pressure is -252.8°C.

How do we store hydrogen energy?

How Hydrogen Storage Works. Hydrogen can be stored physically as either a gas or a liquid. Storage of hydrogen as a gas typically requires high-pressure tanks (350–700 bar [5,000–10,000 psi] tank pressure).

Why is storing hydrogen a problem?

Hydrogen is difficult to store because has very low volumetric energy density. It is the simplest and lightest element–it’s lighter than helium. Hydrogen is 3.2 times less energy dense than natural gas and 2700 times less energy dense than gasoline.

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