What number is in front of Wuhu gas number?

Gas is the general name of gas fuel, which can be used for urban residents and industrial enterprises to burn and release heat. There are many kinds of gas, mainly natural gas, artificial gas, liquefied petroleum gas and biogas.

Basic features:

1 density.

Refers to the weight contained in the unit volume. The gas density of liquefied petroleum gas is 2.0-2.5 kg/m3.

2. Specific gravity.

The specific gravity of gas refers to the ratio of the density of gas per unit volume to the density of air under the same conditions, also called relative density or relative specific gravity.

3. calorific value.

The heat released by complete combustion of gas per unit volume becomes the calorific value of gas. High calorific value refers to the total heat released when the unit gas is completely burned and its flue gas is cooled to the initial temperature, and the water vapor in it is discharged as condensed water.

Low calorific value refers to the total heat released when the flue gas is cooled to the initial temperature and the water vapor in it is discharged as steam after the unit gas is completely burned.

4. Theoretical air volume.

According to the combustion reaction equation, the minimum amount of air required for complete combustion per unit gas. The amount of air required for burning LPG is three times that of natural gas. Six times as much as artificial gas.

5. Expansion and compression.

The volume of liquefied petroleum gas expands with the increase of temperature. In a closed container filled with liquefied petroleum gas, with the increase of temperature, its volume expands rapidly, so that the pressure rises rapidly and the container bursts. If the volume expansion coefficient of water is set to 1, the volume expansion coefficient of liquefied petroleum gas is about 16 times that of water.