Numerical analysis of thermal pollution caused by coal-fired power plant

Abstract

In this paper, analysis of thermal pollution from thermal power plants is carried out. This analysis is done with the use of numerical simulation. A two-dimensional numerical model was proposed and numerical results are obtained by using the Fluent software package. Four scenarios were considered, where scenario 1 represents a flow ratio of the discharge channel and the Sava River of 3% and scenario 4 a flow ratio of 12%. With the appearance of increasing droughts, the flow of rivers also decreases. As the river flow decreases, the ratio of discharge channel and river flow increases. The analysis will show that the higher this ratio, the greater the negative impact on the living world in the river. Namely, there is an increase in the heat load of the river. In the numerical simulations, the initial river temperature was taken as the arithmetic mean temperature in the summer months for the previous five years, before reaching the Nikola Tesla B thermal power plant itself. When scenario 1 is compared with the scenario 4, one can notice that by changing the flow of the Sava River and for the same inlet temperature, the river temperature is higher for the scenario 4 at distance of 2000m after the discharge.