Analysis of Performance and Study of Modification of Geometry in Cooling Tower of Geothermal Power Plant

• Main Author: Sinaga-13114138, Kristofel
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/28521
• Institution: Institut Teknologi Bandung

As a heat exchanger to environment, a cooling tower should be at its design state so that the heat exchanging process can run well. However, as time goes by, so does the performance of the cooling tower. If the heat dissipation process declines, the water temperature that exit the cooling tower rises. The rise of water temperature will cause the rise of the pressure of the condenser in geothermal power plant. Due to the rising pressure, the power generated by the generator of the power plant will decline, which is a disadvantage. <br /> <br /> Evaluation of a cooling tower performance need to be done in order to find out the performance of a cooling tower. The method used in this evaluation is the Performance Curve Method and the Characteristic Curved Method that is in CTI-ATC 105. The evaluation result will be used as a basic for analyzing the cause of performance deterioration and the effort that can be done to improve the performance of the cooling tower. <br /> <br /> The improvement of the cooling tower performance is done by modifying the geometry of the cooling tower, so that it impacts the rate of the air flow that enters the cooling tower. The increasing value of air mass flow rate is 3.4% and it causes the cooling water temperature to decrease by 0.2%. The temperature decrease has a positive impacts, which are the decrease of the pressure of the condenser and the increase of the power generated by the generator system. The increase of the power generated by the turbin is about 179,62 kW.