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Air conditioning and ventilation systems engineering design and equipment noise control method

Update Time :2015-07-25The view :451

456棋牌 Air conditioning equipment noise impact on the environment and the use of the room has been valued by everyone, installation and piping vibration damping from three aspects described position and selection device settings, duct system design optimization, device set forth in the actual engineering design , and how the equipment silencer, isolation, damping, making the surrounding buildings and the use of the room noise reaches specification requirements.

456棋牌 First, the overall effect of air conditioning and ventilation systems, in addition to room temperature, and humidity to meet the design requirements, the use of the room's noise level is equally important, is the key to design success.

Second, the air conditioning and ventilation systems noise sources:

456棋牌 1 normal ventilation: exhaust fan, blower.

2 air-conditioning system: refrigeration units, circulating pumps, cooling towers, air-conditioned terminal (fan coil units, air handling units).

3 Fire: exhaust fan, positive pressure blower.

4 air defense ventilation system: air defense fan.

Noise control equipment required mainly for air conditioning systems, ventilation equipment in peacetime; and when ventilation air defense equipment and exhaust pressure fan because of its open fire only in time of war or fire, the noise can not be controlled.

456棋牌 Third, make use of the room up to the national indoor allowable noise standards, to control the following aspects:

1 device settings to optimize the location and selection.

2 duct system design optimization.

456棋牌 3 equipment installation and piping damping vibration isolation.

456棋牌 Fourth, following from the above three aspects:

456棋牌 1 equipment room setup and selection:

(1)

Chillers, chilled water pumps, cooling water pump room layout and Selection: noisy chillers, chilled water pumps, cooling water pumps should be set up in the basement, the room's walls, underground floor of the acoustic isolation, thereby reducing on the impact of the use of the room floor; if you can only be set on the ground, should set up the equipment room, soundproof doors, set up if necessary double walls, double doors; for the pump should try to choose ≤1450rpm speed low speed pump, the chiller should Select the vibration of the compressor is relatively small (e.g. a screw compression, scroll compression).

(2)

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