Application Considerations

Q Fan Sound Data

Trane Q fans are designed to be used in any installation where a standard airfoil centrifugal fan can be used. The sound level of the Q fan in the difficult to attenuate lower frequencies is lower than that produced by standard airfoil centrifugal fans with the same capacity. Sound levels in the higher octave bands compare favorably.Therefore, the Q fan will provide quieter sound levels in a typical installation.

Designing the system for lower static pressures and selecting the fan at high efficiency will result in quieter fan operation, as well as power savings.

The best method of acoustical design makes use of unit sound power levels in all eight octave bands. These sound power levels for eachTrane Q fan can be obtained from theTrane computerized fan selection program.

In the past, it has been an industry practice to test air moving devices within a reverberating room to determine total sound power.This has presented the problem of distinguishing between inlet and discharge sound power ratings, where significant differences do exist.

Trane engineers solved this problem by locating the fan adjacent to the reverberating room and ducting to it. By turning the fan around, inlet and discharge sound power can be measured separately and accurately.

By ducting both the inlet and outlet, radiated shell sound power was determined. Using this method with theTrane reverberant room that

Trane Acoustics Program

Trane has a system level acoustics computer program that accurately converts fan sound power to room NC levels. This program uses ASHRAE approved algorithms and is the most complete and accurate sound predictive program in the HVAC industry. Use of theTrane acoustics program allows all sound paths to be checked and attenuated to achieve the desired room sound levels without costly overdesigning. Contact yourTrane sales engineer for more details on this Customer Direct Service (C.D.S.) Network program.

Q Fan/Super Q II Plus Silencers Trane has a unique silencer for the Q fan. This low turbulence, high attenuation silencer dramatically reduces airborne noise from the Q-Fan. A bulleted cylindrical silencer attenuates medium and high frequency noise generated by the Q Fan to a point where the Q Fan can be successfully installed in such sound sensitive applications as ceiling plenums successfully.

Trane’s Plus silencer has a field repositionable bullet (center body) that can be relocated close to the Q Fan outlet. This unique feature eliminates low frequency turbulence and makes the Q fan quieter than plug fans or other axial or mixed flow fans. Pressure drop through the Plus silencer is approximately .1-inch sp. The Plus silencer has been used on many projects in the last five years to consistently create NC 15-35 spaces.

Table A-5 — Inlet Vane Sound Data

Plus silencer attenuation is shown in Tables S-1 and S-2. Use theTrane fan selection program to obtain precise Plus attenuation with regenerated noise included.

Trane ASA10B Sound Analyzer Trane offers a low cost 10 octave band sound analyzer for sound measurements. Capable of measuring noise from 30 to 123 db sound pressure with flat, dbA and dbC sound LCb weightings this rugged meter permits comparative and absolute sound measurements to be taken.

Ideas On How To Use The ASA10B The ASA10B can be used on existing jobs to measure equipment sound levels by octave bands. Compare this data with NC charts to determine what frequencies need to be attenuated and by how much. The type and cost of noise control options is a function of the problem frequency and amplitude.

On acoustical retrofits, the ASA10B can accurately compare before and after noise levels. Real measurements establish the benefit of the retrofit.

conforms to ASHRAE standards, acoustical data on the Q fan is substantially more accurate than fan ratings made using conventional techniques.Tests covered all sizes and speeds over the entire performance range of the line. A computer program was then used to determine the precise relationship of speed, size, point of operation and frequency.

DB Addition For Vane Position Indicated

Octave

Mid-

Wide

75%

50%

25%

Band

Frequency

Open

W/Open

W/Open

W/Open

1

63

+4

+8

+12

+14

2

125

+8

+9

+9

+10

3

200

+7

+8

+9

+9

4

500

+4

+5

+6

+6

5

1,000

0

0

0

0

6

2,000

0

0

0

0

7

4,000

0

0

0

0

8

8,000

0

0

0

0

20

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Trane manual Fan Sound Data, Trane Acoustics Program, Table A-5 Inlet Vane Sound Data

Fan specifications

Trane is a well-known name in the heating, ventilation, and air conditioning (HVAC) industry, and one of their standout products is the Trane Fan. Designed to provide efficient and effective airflow, the Trane Fan is a versatile solution suited for both residential and commercial applications.

One of the main features of the Trane Fan is its Energy Efficiency. With increasing energy costs, having a fan that operates efficiently is crucial. Trane fans are designed with advanced motor technology that enhances performance while reducing energy consumption. This not only helps lower utility bills but also contributes to a more sustainable environment.

The Variable Speed Technology is another notable characteristic. Trane fans come equipped with variable speed motors that adjust the airflow according to the specific needs of a space. This adaptability means that the fan can run at lower speeds, providing quiet operation while maintaining comfort levels, and ramping up power when needed for more intense cooling or ventilation.

Durability and robustness are core attributes of Trane fans. Constructed from high-quality materials, these fans are built to withstand harsh conditions and continue to function optimally over time. This longevity is essential for commercial settings where reliability is paramount.

Additionally, Trane delivers innovative sound-reduction technologies within their fan designs. Special engineering ensures that these units operate quietly, making them ideal for environments such as offices, schools, and homes where noise can be a distraction.

Another significant aspect is Smart Technology Integration. Trane fans are compatible with various smart home systems, allowing users to control their systems remotely. This feature enhances convenience, enabling homeowners and facility managers to monitor and adjust air quality effortlessly.

In terms of ease of installation, Trane Fans are designed with user-friendly features that facilitate quicker setup and less hassle. Their modular designs allow for flexibility in installation across various applications.

In summary, the Trane Fan stands out due to its energy efficiency, variable speed technology, durability, sound-reduction capabilities, smart technology integration, and ease of installation. These characteristics make Trane fans a reliable choice for enhancing indoor air quality across diverse environments.