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Upgrading a Large Reverberation Room to Meet AHRI 220
Technical Paper
2017-01-1896
ISSN: 0148-7191, e-ISSN: 2688-3627
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Abstract
A large reverberation room of approximately 310 m3 (11,000 ft3) used in the air conditioning, heating and refrigeration industry, was in need of improvements to meet the updated requirements of the American Heating and Refrigeration Institute (AHRI) Standard 220. In addition, it was desired to extend the measurement qualification of the room down to the 63 Hz octave band. The initial qualification test results showed that the room did not qualify for the extended low frequency range and also had some irregularities in the 100 Hz third octave band. This paper reports the results of a three-part investigation to correct reverberation room response irregularities in the 100 Hz third octave band, to establish performance that qualifies relative to the most recent standard, and to determine and integrate the means by which its qualification could be extended down to the frequency bands of 50, 63, and 80Hz.
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Kolano, R. and Brown, D., "Upgrading a Large Reverberation Room to Meet AHRI 220," SAE Technical Paper 2017-01-1896, 2017, https://doi.org/10.4271/2017-01-1896.Data Sets - Support Documents
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References
- American National Standards Institute Standard Acoustics - Determination of Sound Power Levels and Sound Energy Levels of Noise Sources using Sound Pressure - Precision Methods for Reverberation Test Rooms ANSI Standard S12.51-2012 / ISO:3741:2010
- Air-conditioning, Heating, Refrigeration Institute Standard Reverberation Room Qualification and Testing Procedures for Determining Sound Power of HVAC Equipment AHRI Standard 220 2012 2014
- Ebbing C. E. and Maling G. C. , Jr. Reverberation Room Qualification for Determination of Sound Power of Sources of Discrete Frequency Sound Journal of the Acoustical Society of America 54 4 1973
- Wise R.E. , Maling G.C. , Jr. and Masuda K. Qualification of a 230 Cubic Meter Reverberation Room Noise Control Engineering Journal Sep. Oct. 1976
- Tichy J. Effects of Source Position, Wall Absorption and Rotating Diffuser on the Qualification of Reverberation Rooms Noise Control Engineering Journal Sep. Oct. 1976
- Lang M. A. and Rennie J. M. Qualification of a 94 Cubic Meter Reverberation Room Noise Control Engineering Journal Sep. Oct. 1981
- Kolano , R. , Abhyankar , S. , and Martin , T. Restoring and Upgrading of a Ford Motor Company Reverberation Room Test Suite SAE Technical Paper 2013-01-1960 2013 10.4271/2013-01-1960