Active noise cancellation in HVAC ducts

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dc.contributor.advisor Narayanan, Vinod
dc.contributor.advisor George, Nithin V.
dc.contributor.author Tewari, Kamal
dc.date.accessioned 2017-10-18T05:35:12Z
dc.date.available 2017-10-18T05:35:12Z
dc.date.issued 2017
dc.identifier.citation Tewari, Kamal (2017). Active noise cancellation in HVAC ducts (M.Tech. Dissertation). Indian Institute of Technology, Gandhinagar, pp. 54 (Acc No: T00252) en_US
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3232
dc.description.abstract Modern heating, ventilation and air conditioning (HVAC) systems usually consists of a centralized air conditioning unit like a chiller plant, a series of long ducts which transport the processed air and an indoor unit to control the air flow to the room. Noise produced by the centralized air treatment units as well as due to flow of air in the duct is annoying and has been shown to produce fatigue. Several passive noise cancellation approaches have been attempted to reduce this noise levels. However, these passive noise cancellation approaches are not effective for low frequency noise mitigation. Active noise control, which works on the principle of destructive superposition of sound has recently evolved as an effective candidate for noise cancellation in the low frequency region. An attempt has been made in this thesis to consider active noise cancellation in a duct as a fluid dynamics problem and model the same using such techniques. Active noise cancellation in a duct has been studied from a fluid dynamic perspective and the results obtained are promising. In addition, we have successfully implemented an active noise control system in a duct and noticeable noise reduction has been observed. en_US
dc.description.statementofresponsibility by Kamal Tewari
dc.format.extent 54 p.; 29 cm.
dc.language.iso en_US en_US
dc.publisher Indian Institute of Technology Gandhinagar en_US
dc.title Active noise cancellation in HVAC ducts en_US
dc.type Thesis en_US
dc.contributor.department Mechanical Engineering
dc.description.degree M.Tech.


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