What is the density of hydrogen at 700 bar?
42 kg/m3
Under pressure So, at 700 bar, which is 700 times normal atmospheric pressure, hydrogen has a density of 42 kg/m3, compared with 0.090 kg/m3 under normal pressure and temperature conditions. At this pressure, 5 kg of hydrogen can be stored in a 125-liter tank.
What is the energy density of hydrogen?
approximately 120 MJ/kg
By contrast, hydrogen has an energy density of approximately 120 MJ/kg, almost three times more than diesel or gasoline. In electrical terms, the energy density of hydrogen is equal to 33.6 kWh of usable energy per kg, versus diesel which only holds about 12–14 kWh per kg.
Is hydrogen liquid at 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). Storage of hydrogen as a liquid requires cryogenic temperatures because the boiling point of hydrogen at one atmosphere pressure is −252.8°C.
What is the density of hydrogen at 200 bar?
| State | Temperature | Density |
|---|---|---|
| [K] | [g/l], [kg/m3] | |
| Gas | 160 | 0.1514 |
| 180 | 0.1346 | |
| 200 | 0.1211 |
How do you find the density of hydrogen?
To find this, remember the relationship between number of moles and mass. But density is m/V, so flip the equation over to get: m/V = (MMP)/(RT) = density of the gas.
What pressure does hydrogen liquify?
1 atm
At ambient pressure (1 atm), hydrogen liquifies at a temperature of −253 ◦C, leading to a significant increase in its density. Hydrogen has a critical temperature and pressure of −240 ◦C and 1.3 MPa, respectively.
How much power does 1kg of hydrogen produce?
33.33 kWh
1 kg of hydrogen contains 33.33 kWh of usable energy, whereas petrol and diesel only hold about 12 kWh/kg (see www.h2data.de).
Does hydrogen have a high energy density?
Importantly, hydrogen has the highest gravimetric energy density of all known substances, i.e. a lower heating value (LHV) of ~120 kJ/g.
What pressure is hydrogen stored at in cars?
350-700 bar
Hydrogen can be stored physically as either a gas or liquid. It typically requires high-pressure tanks (350-700 bar tank pressure).
What is the density of hydrogen at 350 bar?
21 kg/m³
At a pressure of 350 bar, the volumetric energy density of gaseous hydrogen is 21 kg/m³.
So, at 700 bar, which is 700 times normal atmospheric pressure, hydrogen has a density of 42 kg/m3, compared with 0.090 kg/m3 under normal pressure and temperature conditions. At this pressure, 5 kg of hydrogen can be stored in a 125-liter tank.
What is the density of hydrogen under normal pressure?
Under pressure. The easiest way to decrease the volume of a gas, at constant temperatures, is to increase its pressure. So, at 700 bar, which is 700 times normal atmospheric pressure, hydrogen has a density of 42 kg/m 3, compared with 0.090 kg/m 3 under normal pressure and temperature conditions.
What is the density of hydrogen at 5 Bara?
Example 1: Density of hydrogen at 5 bara and 24 °C. Calculator gives the density at 24 °C and 1 bara: 0.0815 [kg/m 3] Density at 24°C and 5 bara: 0.0815 [kg/m 3 ]* 5 [bara]/1 [bara] = 0.408 [kg/m3] Example 2: Density of hydrogen at 725 psia and 125 °F.
How much hydrogen can be stored in a 125-liter tank?
The easiest way to decrease the volume of a gas, at constant temperatures, is to increase its pressure. So, at 700 bar, which is 700 times normal atmospheric pressure, hydrogen has a density of 42 kg/m3, compared with 0.090 kg/m3 under normal pressure and temperature conditions. At this pressure, 5 kg of hydrogen can be stored in a 125-liter tank.
