TY - JOUR
T1 - Characterisation of acoustic louvres panel for Heating Ventilating and Air Conditioning (HVAC) noise control
AU - Irawan, S. R.
AU - Suyatno,
AU - Indrawati, S.
AU - Fatimah, I.
AU - Indarto, B.
AU - Muntini, M. S.
AU - Anggoro, D.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2023
Y1 - 2023
N2 - This paper presents the results of research about louvre panels with 4 blades, 5 blades, and 6 blades for mechanical and acoustical performance which installed at the outlet of the ducting system. The mechanical performance will show up the airflow velocity and pressure drop, for the acoustical performance will analysed for its ability to reduce noise in the HVAC System. The measurement method used a rectangular linear duct with the inlet of a fan as an airflow source and loudspeaker as a noise source. The ability tested from the acoustic parameters of TL and the directivity of the noise from the outlet section, as well as mechanical analysis performance based on airflow and pressure drop. For the pressure drop parameter value is up to 20 Pa for 4 blades louvre, and about 24 Pa for 5 blades and 6 blades louvre. By using third octave band filter from 20 to 8000 Hz, the highest TL value is at 27 dB at a frequency of 63 Hz. For the directivity used to determine the distribution of sound energy around the outlet, it shows that the highest SPL value is at a frequency of 1 kHz with the difference from the perpendicular angle of the outlet after being given a louvre acoustic panel of 12 dB. So, the installation of louvre panels has small of pressure drop effect, but it can be effective for noise reduction.
AB - This paper presents the results of research about louvre panels with 4 blades, 5 blades, and 6 blades for mechanical and acoustical performance which installed at the outlet of the ducting system. The mechanical performance will show up the airflow velocity and pressure drop, for the acoustical performance will analysed for its ability to reduce noise in the HVAC System. The measurement method used a rectangular linear duct with the inlet of a fan as an airflow source and loudspeaker as a noise source. The ability tested from the acoustic parameters of TL and the directivity of the noise from the outlet section, as well as mechanical analysis performance based on airflow and pressure drop. For the pressure drop parameter value is up to 20 Pa for 4 blades louvre, and about 24 Pa for 5 blades and 6 blades louvre. By using third octave band filter from 20 to 8000 Hz, the highest TL value is at 27 dB at a frequency of 63 Hz. For the directivity used to determine the distribution of sound energy around the outlet, it shows that the highest SPL value is at a frequency of 1 kHz with the difference from the perpendicular angle of the outlet after being given a louvre acoustic panel of 12 dB. So, the installation of louvre panels has small of pressure drop effect, but it can be effective for noise reduction.
UR - http://www.scopus.com/inward/record.url?scp=85163732936&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/2498/1/012046
DO - 10.1088/1742-6596/2498/1/012046
M3 - Conference article
AN - SCOPUS:85163732936
SN - 1742-6588
VL - 2498
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012046
T2 - 11th International Conference on Physics and Its Applications, ICOPIA 2022
Y2 - 10 August 2022 through 11 August 2022
ER -