This project is a power plant project in Bangladesh and the diesel generator sets are installed in the powerhouse. In order to ensure the cleanliness of the air intake in the powerhouse, an air intake filter silencer is installed at the air intake. A cylindrical filter with a filtration accuracy of 5u is adopted in this project. The silencer section is of a resistive silencer structure and is equipped with multiple axial flow fans, sand-proof louvers are installed outdoors, and air valves are arranged indoors for linkage control with the sets, The noise at the outdoor air inlet 1m away is less than 85dB (A) during the operation.