Is the heating value of natural gas decreasing?Īs time goes on, people will start to recognize that the heating value of natural gas is decreasing. Price of 1 m3 natural gas = volume (m3) x heat value (MJ/m3) x price (Currency/MJ) x VAT. The price is not set by the quantity of natural gas, but the quality and the heating value will determine how much an individual (or a country) will pay for this fuel. A tool called chromatograph is measuring the quality of the natural gas and is able to determine the exported fossil fuels’ components, therefore its heating value will also be known. However, the scale is not that wide: natural gas producers must meet a lot of quality criteria and parameters before exporting their product. Hard black coal (IEA definition): 23.9 MJ/kg.Liquefied petroleum gas (LPG): 46-51 MJ/kg.For example, in Hungary, the heat value of natural gas has an average of 34.12 MJ/M3. The heat content of natural gas might be different in various countries.
“A megajoule per cubic meter (MJ/m³) is a decimal multiple of a derived unit of specific energy, heating value, energy content, or heat of combustion per unit volume.” Shortly: it shows how much energy (in megajoule) is released while combusting 1 cubic meter of natural gas.ġ MJ/m3 = 26.83 BTU/SCF (British thermal unit / cubic foot) The heat content of natural gas is not related to the colour of the flame in the stove, nor to its colour or price. The heat value of natural gas depends on how effective the thermal energy coming from the natural gas is. Heat value of natural gas (in MJ/m3 and BTU/SCF)
Natural gas producers add odour to the gas to make it less dangerous and to make leaking more noticeable. Therefore, natural gas is an extremely flammable gas, which is odourless and colourless too. It also contains hydrogen sulfide and helium in a very little amount.
Natural gas mostly contains methane (91.3%), ethane (5%), propane (1.8%), butane (1%), nitrogen and carbon dioxide. The components of natural gas determine the heat value of this fossil fuel.
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