Determination of Sanitary Protection Zones by the Noise Factor of Modern TPPS.

The issues of noise reduction from power plants, especially those located in large cities, are an urgent problem. The main sources of constant noise of modern TPPs with advanced steam turbine (ST), combined cycle (CCGT) and gas turbine (GT) units are considered. At that, it was taken into account that modern gas turbine plants are equipped with effective silencers for air intakes. A formula for calculating the width of the sanitary protection zone, depending on the capacity of the STP, CCGTP, GTP units and their number, has been obtained. It is shown that the plant's sanitary protection zone depends both on traditional sources of noise (forced draft machines, transformers, natural draft counter flow cooling towers, gas-distributing plants) penetrating from the TPP premises, and on new sources, such as dry fan cooling towers. The noise characteristics of natural draft counter flow cooling towers and dry fan cooling towers are compared. [ABSTRACT FROM AUTHOR]