Standby Generator Room Setting
1. Plane layout of the
generator room
When selecting the plane
position of the machine room, it should be adjacent to the power distribution
room as much as possible, because it is convenient for wiring, reducing the
loss of materials and electric energy, and also convenient for management. If
conditions permit, the machine room should be located on the first floor, which
is convenient for ventilation, heat dissipation and smoke exhaustion. However,
in high-rise buildings and large and medium-sized commercial buildings, the
first floor is usually used as a commercial room, and the owners generally do
not agree with this plan, so the machine room is often located in the basement.
At this time, the following points should be noted in selecting the location of
the equipment room:
(1) The machine room
should have one side against the outer wall, so that the equipment ventilation,
smoke exhaust is easier to deal with;
(2) It should be noted
that the lifting, handling and maintenance of the unit is convenient.
Generally, the parking garage access channel is used as the handling channel.
However, if the passage is too small, the position of the lifting hole should
be considered;
(3) Should avoid the
damp place, do not set it under the regular water supply place such as the
toilet, bathroom, pool, etc. or next door, to avoid toilet maintenance or floor
seepage affecting the operation of the unit.
2. Ventilation and heat
dissipation of the unit
Diesel engine, generator
and exhaust pipe dissipate heat during operation, which increases the
temperature of the machine room. If the temperature rises to a certain extent,
it will affect the output of the generator. Therefore, measures must be taken
to ensure the cooling of the unit. In the case of sufficient air intake and
exhaust ventilation, the closed-type water circulation and air-cooled integral
unit is generally used. Otherwise, the exhaust fan and the heat-dissipating
pipe can be separated from the unit, and placed outdoor, and the outdoor heat
dissipation pipe is connected with the diesel engine by a water pipe.
3. Smoke exhaust
When designing the smoke
exhaust pipe system, the following points should be noted:
(1) The smoke exhaust
system can reduce the back pressure as much as possible, because the increase
of exhaust gas resistance will lead to the decrease of diesel engine output and
the increase of temperature rise. Therefore, the shorter and straighter the exhaust
pipe, the better.
(2) The exhaust pipe
should be insulated to reduce scald and reduce thermal radiation to raise the
temperature of the machine room.
(3) A muffler should be
provided to reduce noise.
4. Noise processing
The selected units in general
civil buildings are high-speed units. The noise is relatively large. In order
to meet the requirements of environmental protection, the damping material
should be set in the equipment room and the noise reduction measures should be
taken. Since the actual situation of each project is very different, when
selecting an emergency diesel generator set, in addition to meeting the
standard requirement, it should be set according to the actual situation to
achieve satisfactory results.
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