Fuel

28問 • 2年前

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carbonaceous combustible substance, which on combustion liberates a large amount of energy in the form of heat which can be transformed into another usable energy that can be used economically for domestic and industrial purpose.

Fuel

finite resource of chemical potential energy in which energy stored in the molecular structure of particular compounds is released via complex chemical reactions.

Fuel

any material that can be made to react with other substances so that it releases energy as thermal energy or to be used for work.

Fuel

are coal, petroleum, and natural gas, which are the world’s major sources of energy.

Fossil Fuels

consists of gaseous hydrocarbons, compounds of hydrogen and carbon.

Natural Gas

is a liquid composed of hundreds of compounds, most of which are hydrocarbons, with the remainder being chiefly organic compounds containing sulfur, nitrogen, or oxygen.

Petroleum

, which is solid, contains hydrocarbons of high molecular weight as well as compounds containing sulfur, oxygen, or nitrogen.

Coal

is the most abundant fossil fuel.

Coal

is determined by combustion with pressurized oxygen in a bomb calorimeter.

High Heating Value (HHV)

is the density of the fuel divided by the density of water at the same temperature.

Specific Gravity

is a measure of a liquid’s resistance to flow; the higher the viscosity, the more resistant the liquid is to flowing.

Viscosity

describes how readily a substance vapourizes.

Volatility

is an indication of the maximum temperature at which a liquid fuel can be stored and handled without serious fire hazard.

Flash Point

is the lowest temperature at which a liquid can give off vapor to form an ignitable mixture in air near the surface of the liquid.

Flash Point

is the lowest temperature required to initiate self-sustained combustion in a standard container in atmospheric air in the absence of a spark or flame.

Autoignition Temperature

indicates the tendency of gasoline to knock (onset of autoignition) when the compression ratio in a spark ignition engine is raised

Octane Number

is the percentage of isooctane in the isooctane-heptane mixture that most closely matches the performance of the test fuel.

Octane Number

ranks fuels according to their ignition delay when undergoing compression ignition.

Cetane Number

varies depending on how the fuel is processed and the source of the fuel.

Volumetric Analysis

is a function of the volumetric analysis and molecular weights of the component gases and can be determined based on a specific volumetric analysis.

Fuel Density

is the heat release per unit mass when the fuel, initially at 25°C, reacts completely with oxygen, and the products are returned to 25°C.

Heating Value

is the lowest temperature at which ignition occurs spontaneously in a standard container with atmospheric air in the absence of a spark or flame and without regard to the ignition delay time.

Autoignition Temperature

amount of heat liberated when a unit mass or a unit volume of the fuel is burnt completely in air or oxygen.

Calorific Value

total amount of heat produced, when unit mass/volume of fuel has been burnt completely and the products of combustion have been cooled to room temperature.

Higher Calorific Value

total amount of heat produced, when unit mass/volume of fuel has been burnt completely and the products are permitted to escape in atmosphere.

Lower Calorific Value

The energy released when one gram of any substance is combusted.

Fuel Value

One key feature of a fuel is its __, also known as fuel value, the amount of energy that can be released per unit mass of fuel burned.

Energy Density

is the quantity of heat energy liberated by complete combustion of a unit mass of a fuel.

Calorific Value

Pg 1. Radio-and-Television

Jian Estelle · 23問 · 2年前

Pg 1. Radio-and-Television