They usually take the form of cast iron open stoves fitted with a number of Bunsen burners which heat perforated lumps of asbestos.
A water pipe of copper or wrought iron is passed through a cylinder in which gas or oil heating burners are placed.
The former is often a rich oil-gas, stored in steel reservoirs under the coaches at a pressure of six or seven atmospheres, and passed through a reducing valve to the burners; these used to be of the ordinary fish-tail type, but inverted incandescent mantles are coming into increasing use.
The destruction of trees by charcoal-burners has resulted in the almost complete deforestation of the island.
As regards street lighting, the extended use of burners with incandescent mantles has been of good effect.
Ragot and others made burners in which two jets of acetylene, coming from two tubes placed some little distance apart, impinged and splayed each other out into a butterfly flame.
Before it reaches the burners at the furnaces.
If a long glass tube with plane ends, and containing some pellets of sodium is heated in the middle by a row of burners, the cool ends remain practically vacuous and do not become obscured.
Up to the middle of the 19th century the destruction of forests by timber-cutters, by charcoal-burners, and above all by shifting cultivation, was allowed to go on everywhere unchecked.
The destruction of the forests by timbercutters and charcoal-burners has been allowed to go on unchecked, no plantations have been laid out, and nothing has been done for forest conservation.
If the ore is in pieces of the size of a walnut Or upwards, it is roasted in plain" kilns "or" burners,"provided with a grating of suitable construction for the removal of the cinders, with a side door in the upper part for charging in the fresh ore on the top of the partially burned ore, and with an arch-shaped roof, from which the burnergas is carried away in a flue common to a whole set of kilns.
Maletra, and mechanical burners, which were formerly almost entirely confined to America, where the saving of labour is a primary consideration.
When issuing from the chambers, the gases still contain the whole of the free nitrogen contained in the air which had entered into the burners, together with about a third, or at least a fourth, of the oxygen originally present therein, such excess of oxygen being required in order to carry out the conversion of the sulphur dioxide into sulphuric acid as completely as possible.
To begin with, in the burners pyrites (or, as the case may be, brimstone or blende) is made to yield hot burner-gas containing about 7% (in the case of brimstone 10 or 11%) of SO 2.
The supply of the nitric acid required to make up this loss is obtained in England by "potting" that is, by decomposing solid nitrate of soda by sulphuric acid in a flue between the pyrites burners and the chambers.
The gas obtained by the Young process, when tested by itself in the burners most suited for its combustion, gives on the photometer an illuminating value averaging from 50 to 60 candle-power, but it is claimed, and quite correctly, that the enriching power of the gas is considerably greater.
And of course the Nazis were ardent book burners themselves.