Analysis of Split Air Conditioner Noise using Sound Intensity Mapping

Journal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume 9 No. 1, May 2015, Pages 28-33

M. S. Mohd Sani1,2,*, I. Zaman2, M. Rahman2
1Advance Structural Integrity and Vibration Research (ASIVR), Faculty of Mechanical Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
2Automotive Engineering Centre, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
*Corresponding author: mshahrir@ump.edu.my

KEYWORDS

Noise Mapping, Sound Intensity, Noise Source, Air Conditioner

ABSTRACT

This paper describes the noise generation and noise source identification for air conditioner noise using sound intensity method. Split unit air conditioners have an indoor unit and an outdoor unit connected by communication pipes. Noise can be reduced the efficiency and performance of the air conditioner. In order to identify and analysis of noise at air conditioner system, experiment has been conducted using sound intensity mapping method. The investigation is carried out by varying the parameters which are the fan speed and temperature. A grid rig was developed to set noise location and rating by locating the microphone at rig point. The noise mapping is presented in contour form to indicate the different level of noises from different location. The highest noise sound levels occur at the front side of air conditioner which is about 74.78 dB at the fan. The second highest noise sound level is occur at the right side of the compressor is 72.11dB. Sound power level is proportional to fan speed at the lowest temperature of the air conditioner. This method can be applied on-site rather than in an an echoic chamber as long as the background noises are stationary.

CITE THIS ARTICLE

MLA
Mohd Sani, M. S., et al. “Analysis of Split Air Conditioner Noise using Sound Intensity Mapping.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 9.1 (2015): 28-33.

APA
Mohd Sani, M. S., Zaman, I., & Rahman, M. (2015). Analysis of Split Air Conditioner Noise using Sound Intensity Mapping. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 9(1), 28-33.

Chicago
Mohd Sani, M. S., I. Zaman, and M. Rahman. “Analysis of Split Air Conditioner Noise using Sound Intensity Mapping.” Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 9, no. 1 (2015): 28-33.

Harvard
Mohd Sani, M.S., Zaman, I. and Rahman, M., 2015. Analysis of Split Air Conditioner Noise using Sound Intensity Mapping. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences, 9(1), pp.28-33.

Vancouver
Mohd Sani, MS, Zaman, I, Rahman, M. Analysis of Split Air Conditioner Noise using Sound Intensity Mapping. Journal of Advanced Research in Fluid Mechanics and Thermal Sciences. 2015;9(1):28-33.

REFERENCES

[1] M.J. Crocker, J.P. Arena, R.E. Dyamannavar, Identification of noise on a residential split-system air conditioner using sound intensity measurements, Journal of Applied Acoustics 65 (2004) 545-558.
[2] A.F. Seybert, M.J. Crocker, J.W. Moore, S.R. Jones, Reducing the noise of a residential air conditioner, Noise Control Engineering Journal 1 (1973) 79-85.
[3] K. Morinushi, Influence of geometric parameters on centrifugal fan noise, Journal Vibration Acoustics 109 (1987) 227-234.
[4] J.B. Graham, Handbook of Acoustical Measurements and Noise Control, McGraw Hill, New York, USA, Chapter 41 (1991).
[5] J.S. Bradely, Disturbance caused by residential air conditioning noise, Journal Acoustics Society American 93 (1993) 1978-1986.
[6] H.G. Laventhall, S.S. Wise, Making noise comfortable for people, Journal American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Trans (2000) 896-900.
[7] J.G. Lilly, Noise in classroom, Journal American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Trans 4295 (2000) 21-29.
[8] W. Neise, Sound power measurement procedures for fans, ACTA Acoustics Journal 3 (1995) 473-485.
[9] M.J. Crocker, Generation of Noise in Machinery, its Control and the Identification of Noise Source, Handbook of Acoustics, Wiley, New York, Chapter 66 (1998).
[10] ISO 9614-1. Acoustics – determination of sound power levels of noise sources using sound intensity – Part 1: Measurement at discrete points. International Organization for Standardization (1993).
[11] ISO 9614-2. Acoustics – determination of sound power levels of noise sources using sound intensity – Part 2: Measurement by scanning. International Organization for Standardization (1996).
[12] ISO 9614-3. Acoustics – determination of sound power levels of noise sources using sound intensity –Part 1: Precision method for measurement by scanning. International Organization for Standardization (2002).