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A gas burner is a device to generate a flame to heat up products using a gaseous fuel such as acetylene, natural gas or propane. Some burners have an air inlet to mix the fuel gas with air to make a complete combustion. Acetylene is commonly used in combination with oxygen. It has many applications such as soldering, brazing and welding, the latter using oxygen instead of air for getting a hotter flame which is required for melting steel. For laboratory uses a natural gas fired Bunsen burner is used. For melting metals with melting points of up to 1100 °C such as copper, silver and gold a propane burner with natural drag of air can be used. == Table 1: Flame temperatures of common gases and fuels == Info & Assuming: * Adiabatic flame * 20 degrees Celsius 1 bar atmosphere * Complete combustion (no soot and more blue-like flame is the key) (Stoichiometric) * Peak Temperature * Speed of Combustion (has no effect on temp, but more energy released per second (as adiabatic) compared to normal flame) * Spectral bands also affect colour of flame as of what part and elements of combustion * Blackbody radiation (colour appearance only because of heat) *Atmosphere - affects temperature of flame and colour due the atmospheric colour effect 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「gas burner」の詳細全文を読む スポンサード リンク
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