EFFECT OF AMBIENT TEMPERATURE UPON GARRI POWER PLANT COMBINED CYCLE

Abstract

The gas turbine performance is highly sensitive to the Compressor Inlet air temperature. In Sudan the output of gas turbine falls to value that is less than the rated output under high temperature Conditions. The solution of this problem is important because the Peak Demand season in Sudan happens in the summer. As one of the convenient methods of inlet air cooling is evaporative cooling type considered as appropriate for hot and dry climate.

The gas turbine and combined plants in Sudan installed in Such ambient conditions, therefore this method can be used to Improve the performance of gas turbine and combined cycle plants to recover the Peak Demand .

The main purpose of this research is to investigate, analyze and calculate the effect of inlet air cooling. This method applies efficiently in garii power plant gas turbine.

The study results indicate that refrigerated cooling appear as The technically feasible, it can give the maximum benefits of turbine Inlet cooling. While evaporative cooling is economically feasible, it Is passive option that can utilize readily available Nile water without demineralization.

The study recommended that the suitable inlet air cooling type For garri Power station is the evaporative cooling system because it is highly efficient in hot and dry area.