What is the pressure in the hydrogen tank on a Toyota Mirai?
The hydrogen tank on a Toyota Mirai, a fuel cell electric vehicle, operates at a pressure of approximately 70 MPa (10,000 psi). This high-pressure storage system is necessary to accommodate the large amount of hydrogen fuel required to power the vehicle's fuel cell and provide a sufficient driving range.
Understanding the Hydrogen Storage System in the Toyota Mirai
The Toyota Mirai is a pioneering fuel cell electric vehicle that uses hydrogen as its primary fuel source. Unlike traditional gasoline or diesel-powered vehicles, the Mirai generates electricity on-board through a chemical reaction between hydrogen and oxygen in a fuel cell stack. This electricity then powers the vehicle's electric motor, providing a clean and efficient means of transportation.
To store the necessary amount of hydrogen fuel on-board, the Mirai is equipped with two high-pressure hydrogen tanks. These tanks are made of carbon-fiber-reinforced polymer and are designed to withstand the immense pressure required to store a sufficient quantity of hydrogen gas.
The Importance of High-Pressure Hydrogen Storage
Hydrogen gas has a relatively low energy density compared to traditional liquid fuels, such as gasoline or diesel. To overcome this challenge and provide a driving range comparable to conventional vehicles, the Mirai's hydrogen tanks are pressurized to an extremely high level of 70 MPa (10,000 psi).
This high-pressure storage system allows the Mirai to carry enough hydrogen fuel to achieve a driving range of up to 312 miles (502 km) on a single tank, making it a viable alternative to traditional internal combustion engine vehicles.
Safety Considerations for High-Pressure Hydrogen Storage
The use of high-pressure hydrogen storage in the Toyota Mirai is subject to strict safety regulations and design standards. The tanks are engineered with multiple layers of protection, including:
- Reinforced carbon-fiber-polymer composite construction to withstand the immense pressure
- Pressure relief devices to safely vent the hydrogen in the event of an emergency
- Comprehensive safety testing and certification to ensure the tanks' integrity and reliability
These safety measures, combined with the Mirai's overall design and engineering, help to ensure the safe operation of the vehicle's hydrogen storage system.
The Future of Hydrogen-Powered Vehicles
The Toyota Mirai represents a significant step forward in the development of hydrogen-powered vehicles. As the technology continues to evolve and the infrastructure for hydrogen refueling expands, the Mirai and other fuel cell electric vehicles may play an increasingly important role in the transition to a more sustainable transportation future.
What is the fuel pressure of the Mirai?
The hydrogen that powers the Mirai is stored at a high pressure of 700 bar in two compact, lightweight tanks.
What is the pressure in the Toyota hydrogen tank?
700 bar
What is the PSI of a hydrogen fuel cell?
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).
How many PSI is a Mirai tank?
System components Hydrogen-related components The fuel cell vehicle has hydrogen tanks (10150 psi [70 MPa, 714 kgf/cm 2, 700 bar]), fuel cell stack, and hydrogen pipelines as hydrogen-related components.
What is the pressure at a hydrogen fueling station?
Hydrogen refuelling stations typically take hydrogen from a source, whether that's an electrolyser at low pressure (typically around 30 bar), pipeline at low- to medium-pressure (typically 50-80 bar) or supplied by a compressed hydrogen delivery asset at medium- to high-pressure (typically 200 bar to 500 bar).
What is the PSI of a full H tank?
As the valve opens, the gauge on the regulator will show the amount of pressure in the cylinder. A full cylinder will read about 2000 psi (pounds per square inch). the gauge reaches the flow rate your doctor prescribed.
How much pressure is in a car hydrogen tank?
Tank pressure is another important factor: the higher the pressure, the more hydrogen the vehicle can carry, and the longer its range. A tank pressure of 700 bar (~10,150 psi) is standard for cars.
How many psi is a hydrogen tank?
5,000 and 10,000 psi
Improved versions of these tanks made of high-strength composite materials are now used to store hydrogen at higher pressures (5,000 and 10,000 psi) to achieve greater driving range in hydrogen-fueled vehicles. High-pressure hydrogen tanks are designed not to rupture and are held to rigorous performance requirements.
What is the pressure in a fuel cell hydrogen tank?
350–700 bar
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).
How many PSI is a full H tank?
Oxygen Cylinders (Tanks) for Home, Healthcare, Business and Aviation
| LITERS | PSI | |
|---|---|---|
| E | 680 | 2000 |
| M60 | 1738 | 2200 |
| MM | 3455 | 2200 |
| H (K) | 7842 | 2000 |
