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BBK-V.122018_ENG People First...
EVERLASTING COMPANY
EVERLASTING
WE
COMPANY
AREYOUR
EVERLASTING
WE
COMPANY
AREYOUR
3.5.Exhaust System
While designing an exhaust system, avoiding back pressure is very important. Excessive exhaust back pressure can
contribute to poor engine performance and increasing working temperature.
If any twist or curve is needed on the exhaust line, be sure that the radius of the elbow used on the turning point is more than
the 150% of the inner radius of exhaust pipes.
The design of an exhaust system is mainly dependent on site, room or building in which the generator set is settled. But be
sure to use the shortest and minimum curved path for piping, in order for minimizing the back-pressure.
Make sure that all piping is tightly fixed, supported and kept at a safe distance from places with too much vibration. Since the
exhaust pipes will heat up to very high temperatures, put them at least 250 mm. away from any flammable material. It is also
recommended to cover or coat the exhaust pipes with high-thermal isolation materials.
At the end of vertical exhaust lines, there must be used a rain protection cap, which can be easily opened with the gas
pressure at the exhaust outlet.
At the very lowest point of any vertical or horizontal exhaust lines, there should be an outlet for draining water out from the
line. Thus no water can reach into the silencer or engine.
Placing the muffler at a closest possible location to the engine, will help you decrease the sound level in exhaust pipes. There
may be placed another muffler at the end of the line, if the exhaust line is too long. Every engine must have its own, separate
exhaust system. No multiple engines shall be connected to a single exhaust line system. Because the exhaust gas, soot or
the condensation inside exhaust lines can be harmful for any engine when it is not running.
The exhaust line system should be integrated with the exhaust outlet of the engine with a flexible connection.
Breathing exhaust gases is harmful for human health, it may even be deathful. Also exposure to the high level noise caused
by the engine, may cause permanent hearing problems. So the exhaust system of a generator set must be designed and
installed well. Any staff around the generator set, should wear ear plugs. The generator set should never be operated with an
incomplete exhaust system.
The exhaust outlet points must be selected carefully in order for ensuring that the exhaust gas coming out from the engine,
does not go back in through the fresh air inlets. These outlets must not be put into any closed areas, passages, corridors, air
channels, ventilation or illumination spaces of buildings, open or closed balconies, elevator hoist ways, any place in that the
flow of the exhaust gas may be blocked by the wind or anything else, any place that supplies fresh air for any other machine,
the yards between the buildings and especially the habitats of any living creatures.
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