Oxygen is used instead of ambient air and is either extracted from air on the site, or more usually, bought in bulk.

使用氧氣取代周邊空氣來當作燃燒進氣，氧氣來源可以是散裝購入或現場由空氣中提取。

The energy requirement to concentrate oxygen from the air is considerable, and this should be included in any energy calculations (see Section 1.3.6.1).
Within the glass industry, there is a large diversity in glass melt production capacities, glass types and applied glass furnace types. For several cases, a conversion to oxygen firing ( e.g. compared to recuperative furnaces, for relatively small furnaces and for special glass) very often improves the overall energy efficiency ( taking into account the primary energy equivalent required to produce the oxygen). However, for other cases the energy consumption for oxygen generation is as high or even higher than the saved energy. This is especially the case when comparing overall energy efficiency of oxygen-fired glass furnaces with end-port fired regenerative glass furnaces for large scale container glass production. However, it is expected that further developments in oxygen-fired glass furnaces will improve their energy efficiency in the near future. Energy savings do not always offset the costs of the oxygen to be purchased.

從空氣中提取濃縮氧氣所需要的能源相當可觀，必須在計算能源時考慮在內。

玻璃業中玻璃熔融產能、型態及應用的加熱爐型式間有很大的差異。在某些案例中，例如相對小型或為特殊玻璃生產用途與回熱式加熱爐比較而採取富氧燃燒，以增進整體能源效率的案例很常見(以生產氧氣的初級能源當量為考量)。有些案例為生產氧氣所投入的能源竟比節省的能源還要高或差不多，特別是在玻璃容器大規模生產時，以富氧燃燒玻璃爐和末端再生式玻璃爐比較其整體能源效率。期望未來富氧燃燒的玻璃加熱爐的發展能更提高能源效率。節省的能源抵不過自外購買氧氣的成本(譯註:還是要靠自己生產)。

Not widely used in all sectors. In the glass sector, producers try to control temperatures in the glass furnace combustion space to levels acceptable for the applied refractory materials and necessary to melt glass of the required quality. A conversion to oxygen firing generally does not mean increased furnace temperatures (refractory or glass temperatures), but may improve heat transfer. In the case of oxygen firing, furnace temperatures need to be more tightly controlled, but are not higher than those in air-fired furnaces (only temperatures of the cores of the flames may be higher).

此技術並非廣泛應用於各產業。在玻璃業中將玻璃熔爐的溫度控制至耐火材料的溫度，即將玻璃熔融的溫度換為富氧燃燒並不意味著只提升燃爐的溫度(指耐火材料溫度和玻璃溫度)，還會改進熱能傳導。
在富氧燃燒的情況下，燃爐的溫度更須做嚴密控制，且不能高過空氣燃燒爐的溫度(只有火焰中心的溫度可以較高)。

The price for bought-in oxygen is high or if self-produced has a high demand on electrical power. The investment in an air separation unit is substantial and will strongly determine the cost effectiveness of firing with oxygen.

氧氣購入價格很高，若在現場自行生產氧氣則非常耗費電力。因此，富氧燃燒投資一座空分廠是基本的，但特別強調必須經過成本效益分析來決定。

Energy Efficiency (2009) 3.1.6