08-17-2017, 12:29 AM
Self-supporting steel chimneys: When the lateral forces (wind or seismic forces) are transmitted to the foundation by the cantilever action of the chimney, the chimney is known as a freestanding chimney. The self-supporting fireplace with the base remains stable in all working conditions without any additional support. A self-supporting fireplace is shown in Fig. The self-supporting chimneys are up to 10 m in diameter and 50 to 100 m high.
Fireplaces of steel guyed: In tall steel chimneys, steel cables or soft steel individuals unite to transmit the lateral forces. These steel chimneys are known as guyed steel chimneys. In steel driven chimneys, all externally applied loads (wind, seismic force, etc.) are not fully transported by the chimney. These individuals or estates together share these applied charges. These guys or ranches ensure the stability of the guyed steel fireplace. These steel chimneys can be provided with one, two or three sets of individuals. In each set of boys, three or four or sometimes six wires are attached to the necklaces. When using a boy set, then the boys will join a necklace to a third or a quarter of the height from the top. When more than one set of types are used, they are used at different heights.
Fireplaces are used to escape and disperse the burnt gases that emerge from the boiler furnaces to such an extent that the gas does not pollute the atmosphere. Different materials such as steel, concrete and bricks are used for the construction of chimneys . Steel chimneys are ideal for process work where a short heating period and low thermal capacity are required. When the gases in a steel chimney heat up, then the gases expand. Hot gases occupy a greater volume than before. The weight of gases per cubic meter is lower. As a result, the unitary pressure at the bottom of the chimney due to the weight of the hot gases is also made less than the pressure of the unit due to the weight of the cold air outside the chimney. The difference between two pressures results in the flow of the gases burned by the chimney .
Fireplaces of steel guyed: In tall steel chimneys, steel cables or soft steel individuals unite to transmit the lateral forces. These steel chimneys are known as guyed steel chimneys. In steel driven chimneys, all externally applied loads (wind, seismic force, etc.) are not fully transported by the chimney. These individuals or estates together share these applied charges. These guys or ranches ensure the stability of the guyed steel fireplace. These steel chimneys can be provided with one, two or three sets of individuals. In each set of boys, three or four or sometimes six wires are attached to the necklaces. When using a boy set, then the boys will join a necklace to a third or a quarter of the height from the top. When more than one set of types are used, they are used at different heights.
Fireplaces are used to escape and disperse the burnt gases that emerge from the boiler furnaces to such an extent that the gas does not pollute the atmosphere. Different materials such as steel, concrete and bricks are used for the construction of chimneys . Steel chimneys are ideal for process work where a short heating period and low thermal capacity are required. When the gases in a steel chimney heat up, then the gases expand. Hot gases occupy a greater volume than before. The weight of gases per cubic meter is lower. As a result, the unitary pressure at the bottom of the chimney due to the weight of the hot gases is also made less than the pressure of the unit due to the weight of the cold air outside the chimney. The difference between two pressures results in the flow of the gases burned by the chimney .