||The main objective of this research is to improve the incineration efficiency of Ren-Wu refuse incineration plant, by doing so, the efficiency of Air Cooled Condenser needs to be increased, which can result in extra power-generation during summer-days.|
After certain period of observation on on-site ambient air temperature, it was found that ACC condensation efficiency started to deteriorate when the ambient air temperature rose above 30°C. ACC efficiency reduction had a direct effect on the plants power generation, more than 4MW loss of power generation was observed when the ambient air temperature hit 34°C.
In this research was a solution in cooling the air temperature. The water spray system created infinitesimal water-droplets which absorbed the heat from ambient air then evaporated. Through this phenomenon, the cooling of ambient air is achievable, hence, the ACC efficiency can be improved.
The result from data analysis confirmed that water spray adiabatic cooling system can help in reducing the ambient air temperature, which can further increase the power generation during summer, extra 2.7 kW of power generation can be produced from 1 ton of steam. The result from project financial analysis also showed that the return on investment would take at least 6.9 years for the return on investment. For the project investment perspective, suitable return on investment period should be less than 5 years. Consequently, further investigation was made to find the reason for such long-due return on investment. Unfortunately, the result showed that due to the unmodifiable structure of ACC site, portions of water spray droplet were collided with the metal structure and failed to evaporate, hence result in the overall-system efficiency reduction, deviated from the design calculation.