Diesel generator room design

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Diesel generator room design
Room design
The location of a diesel generator room
Taking into account the diesel generator set air intake, exhaust, smoke and other, if the conditions when the best room on the first floor. However, the expensive high-rise buildings, especially the first floor is typically used for business, is the gold zone, so the engine room are generally located in the basement. Basement access should not be the natural ventilation is poor people room design a series of adverse factors, designed to handle. The engine room location should note the following: (1) should not be located around the external walls of the room, create the conditions for export outdoor hot air pipes and exhaust pipes; the &#;try to avoid the main entrance of the building facade and other parts to avoid smoke, exhaust its cause; (3) pay attention to the noise impact on the environment; &#;should be close to the building of the substation, so ease of wiring, reducing power consumption, easy operation and management.
2 Ventilation
The diesel generator room ventilation room design, paying particular attention to solve problems, especially the engine room in the basement properly handle, otherwise it will directly affect the operation of the diesel generator set. The exhaust of the unit should normally be set up hot air pipe to carry out organized, not diesel radiator heat scattered in the engine room, and then drawn by the exhaust fan. Have enough fresh air in the engine room supplement. Diesel engine at runtime, the engine room ventilation should be equal to or greater than the diesel engine combustion and fresh air and to maintain the room at room temperature required for fresh air and Maintain the required fresh air at room temperature by the following formula: C = 0.078PT
Where: C - need fresh air (m3 / s)
P - diesel engine rated power (kW)
T - the engine room temperature rise (° C).
Maintain the diesel engine combustion and fresh air to the manufacturers of the unit obtained in the absence of information, per kilowatt brake power needs 0.1m3/min operator (diesel engine braking power with generator power output kW number of 1.1 times). The diesel generator room ventilation is generally taken to exhaust to set the air pipe, into the wind into the wind as a natural way. Air pipe with the diesel engine radiator together, and its connections with flexible connector, the hot air pipe should be straight, if you want to turn, the turning radius is as large as possible and internal to be smooth, the outlet as close as possible and is directly stretched out on the radiator hot air management outside the tube can be difficult to set pipe to export. Air inlet and outlet should be arranged at both ends of the unit, so as to prevent the air short circuit, affecting the cooling effect.
Outlet of the engine room, the air inlet area should meet the requirement below:
S1 is &#; 1.5S S2, &#; 1.8S
Where: S - diesel engine cooling area;
S1 - outlet area;
S2 - air inlet area;
In cold areas should be noted that the air inlet and exhaust port is usually room temperature to avoid the low room temperature affect the unit's start. Outlet and outdoor connections can be set throttle, usually turned off and automatically turn on when the unit operation.
3. Smoke
The exhaust system of emissions in the cylinder to the outside. Exhaust system should minimize back pressure will result in diesel engines contribute to the decline and increase in temperature rise because the increase of exhaust resistance. Exhaust pipe laying methods used there are two kinds: &#;the level of overhead installation, the advantage is less turn, the resistance is small, the drawback is to increase the indoor heat dissipation, so that the room temperature; &#;The trench laying the advantage of the indoor heat a small amount of drawback The exhaust pipes turn, the resistance is relatively large. Commonly used in high-rise building is the level of overhead installation. The exhaust pipe should be separate leads, and to minimize the elbow. Exhaust gas temperature 350 ~ C, in order to prevent burns and reduce radiant heat, the exhaust pipe should be insulated processing. Exhaust noise in the unit total noise be
The strongest one, should be set to the muffler to reduce noise.
4 basic
Based primarily used to support the full weight of the diesel generator sets and the base of the base is located on the basis of the unit installed in the base, the base generally take damping measures.
Commonly used in high-rise building high-speed diesel generator sets, when the unit is installed on the floor that is not the lowest, Note by heavy concrete foundation, so as not to base too heavy and increase the floor load design when the unit load plant to provide to the structure of professional . When the unit at the the bottom of the building shall be the unit to set the concrete foundation. Bottom corner screws embedded, can also crew arrive in the electric drill to install.
(5) Grounding
General application of the diesel generator room three ground: &#;The work of ground: the generator neutral grounding; &#;protective earth: the grounding of electrical equipment normally uncharged metal shell; (3) anti-static grounding: the fuel system equipment and piping ground. A variety of ground with high-rise building ground shared grounding device, the joint ground.
6 fuel oil storage
The equipment room is set to 8 hours of daily fuel tank, its volume can be calculated as follows:
V = G &#; γ &#; A &#; τ is
Where: V - daily fuel tank volume (m 3);
G - diesel fuel consumption (kg / h) by the sample to detect;
γ-date fuel weight (kg / m 3), light diesel oil to 810 ~ 860kg / m 3;
A - tank full of the coefficient, 0.90 general admission;
τ date injection time, generally three to eight hours.
When the room is located within the high-rise buildings, the daily tank should be set up rooms, separated by a firewall and diesel generators.
"Tall Buildings Design Code for Fire Protection" (GB -95, ), high-rise buildings owned diesel generator room can be arranged in the building the ground floor, second floor, should not be arranged in the ground three and below. Out of order to facilitate the cable pipeline, the nearest easy to control, reduce the staff on duty, it is recommended that the diesel generator room as possible should be affixed adjacent substation layout, at the same time should depend on the external walls at the side of layout. Diesel generator room should be reserved for the exhaust, ventilation, cooling channels, cooling method, air cooling is the most simple. Additional outdoor storage tanks, diesel generator room should be set no more than 8 hours between the fuel consumption of diesel oil storage, oil reserves more than the specification of the oil reserves. The diesel generator sets usually takes the overall handling, the design should be reserved for the removal channel.

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