With heavy oil the flame envelope was clearly visible.

The resulting flame envelopes the entire bed producing a high temperature, isothermal processing environment.

There was no visible flame envelope. The entire furnace was full of glowing gas.

Do not use excess flux and keep the end of the rod in the flame envelope whilst being applied.

Another example of synthesis is making chlorides in the flame envelope of a colored composition.

The flame envelope rotates ensuring thorough mixing within the furnace, providing complete combustion and uniform heat distribution.

CARS uses laser beams to measure the temperature and species concentration non-intrusively at any point in a flame envelope.

Once welding has commenced it should be done with one pass as quickly as possible with the filler rod continuously in the flame envelope.

CARS shows precisely what is happening inside each element of a flame, even when conditions are changing rapidly over a short span within the flame envelope.

Flame envelope is the visible part of the flame that is right next to the unreacted powder and still reacting enough to be separate from the surrounding atmosphere.

He took a book of matches from the drawer of his desk, lit one, held the envelope in the flame, then dropped the flaming envelope into a metal wastebasket that he had cleaned out for this purpose.

Thus, in addition to absorption by radiation from the flame envelope, there is transfer by convection, and the resulting furnace temperatures are lower than with other types of burners, even though the heat liberation rates may be somewhat higher.

With the larger flame envelope generated by flue gas recirculation, intended to reduce thermal NOx by reducing peak flame temperatures, excess air levels had to be kept higher than desired to avoid flame impingement, high CO emissions and coke build up on the furnace walls.