A Review on Existing Active Noise Reduction for Industrial HVAC system

The existing industrial active noise reduction (ANR) for heating ventilating and air conditioning (HVAC) system has increased in terms of demand. It is a concern due to the amount of noise generated by industrial HVAC system which can be a problem to the surrounding, where noise pollution is always taken into consideration for healthier environment. In this paper, the industrial HVAC system is appraised based on implementation of the system, placement of sensor and actuators in addition there is also review on algorithms. Moreover, the active noise reduction system is introduced to reduce the lower frequency noise range, this helps in reducing the noise pollution created by the industrial HVAC system. Besides, the placement of sensor and actuators plays a role in determining the suitable distance in achieving best noise reduction position. Furthermore, an evaluation is done on Filtered-XLMS and Kalman Filter active noise cancellation algorithm, the results show that the FxLMS algorithm has much better performance rate compared to Kalman filter in terms of convergence. Lastly, multiple ways of implementing the ANR system is also evaluated which indicates that there are many methods in reducing the noise pollution.