## What is energy per volume?

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U = E/V. Dimension. In physics, energy density is the amount of energy stored in a given system or region of space per unit volume. It may also be used for energy per unit mass, though a more accurate term for this is specific energy (or gravimetric energy density).

## What is the specific energy of a fuel?

Specific energy is the energy per unit mass of a fuel.

**What is energy density of fuel?**

Energy density is generally expressed in two ways, although the first is more common: Volumetric energy density – how much energy a system contains in comparison to its volume; typically expressed in watt-hours per liter (Wh/L) or Megajoules per liter (MJ/L)….Fuel energy density.

Fuel | Energy density |
---|---|

Natural gas | 55 MJ/kg |

**What is Wh kg petrol?**

sity of 4.6 Wh per kg….Contents.

fuel | calorific value | |
---|---|---|

propane | 13.8 | 25.4 |

petrol | 13.0 | 34.7 |

diesel oil (DERV) | 12.7 | 37.9 |

kerosene | 12.8 | 37 |

### How much energy is in a Litre of diesel?

One litre of diesel fuel (auto) has an energy content of approximately 38 MJ – which approximates to 10 kWh (using a ballpark figure) but the efficiency of conversion into kinetic energy is only about 30% – that is better than petrol which is typically 25% depending on the design.

### How many joules are in a gas?

To put how small a joule is into perspective, a liter of gasoline has 31,536,000 joules of energy in it. A kilowatt-hour is equal to 3,600,000 joules. Therefore, a liter of gasoline has 8.76 kW/hr of energy in it, which is a much more manageable number. Figure 1.

**How many kWh is a gallon of petrol?**

calorific values: diesel: 10.7 kWh/l; jet fuel: 10.4 kWh/l; petrol: 9.7 kWh/l.

**How much energy is in a gallon of diesel fuel?**

139000

Heating fuels and their energy content.

Energy Source | Unit | Energy Content (Btu) |
---|---|---|

Diesel Fuel | 1 Gallon | 139000 |

Gasoline | 1 Gallon | 124000 |

Natural Gas | 1 Cubic Foot (cu.ft.) | 950 – 1150 |

Heating Oil | 1 Gallon | 139000 |

#### What is fuel energy density?

Energy density can be measured in energy per volume or per mass. The higher the energy density of a system or material, the greater the amount of energy it has stored. A material can release energy in four types of reactions….Fuel energy density.

Fuel | Energy density |
---|---|

Natural gas | 55 MJ/kg |

#### How to calculate the energy content of a fuel?

Energy content or calorific value is the same as the heat of combustion, and can be calculated from thermodynamical values, or measured in a suitable apparatus: A known amount of the fuel is burned at constant pressure and under standard conditions (0°C and 1 bar) and the heat released is captured in a known mass of water in a calorimeter.

**What is the energy density of fuel?**

Energy Density Energy density is the energy per unit volume of a fuel. displaystyle E_ {d} = frac {E} {V} E d

**What is specific energy of a fuel?**

Specific energy is combustion energy per unit mass, which is used to describe the combustion energy content of a fuel, expressed in SI units as joule per kilogram (J/kg) or equivalent units. It decreases with increasing oxygen content of the fuel.

## What is the energy content of biofuel?

The Energy content of biofuel is a description of the potential energy contained in a given biofuel, measured per unit mass of that fuel, as specific energy, or per unit of volume of the fuel, as energy density.