Abstract: In PT. PJB UP Gresik, gas turbines are utilized to generated power that required big quantity and high quality of air. It depends on the surroundings air qualities. However, the air may be contaminated with pollutants. The solutions to prevent the air contaminant has own drawbacks. In order to mitigate compressor deficiency, compressor online washing using sprayed water into the compressor during operation is proposed, instead of mechanical cleaning. In mechanical cleaning, shutdown of the machines, washing and soaking are required. Online washing by inject the demineralized water into the engine upstream of the first compressor stage at rated is purposed to overcome the disadvantage. The approaches have been developed on the basis of operating pressures, flow-rates, and nozzle configurations. The consideration of these parameters and designed geometries of compressor are keys of success in this application. Optimization of online washing in compressor system once a week improve the efficiency up to 1% or increase annual profit about USD 1.59 million.

Abstract: Number of vehicles has been increased exponentially, but the bedrock capacities of roads and transportation systems have not developed in an equivalent way to efficiently cope with the number of vehicles travelling on them. So, road jamming and traffic correlated pollutions have been increased. A static control system may block emergency vehicles due to traffic jams. Wireless Sensor Networks (WSNs) have gained increasing attention in traffic detection and avoiding road congestion. There has been significant research on Traffic Management Systems using WSNs to avoid congestion, ensure priority for emergency vehicles and cut the Average Waiting Time (AWT) of vehicles at intersections. A device is proposed for priority-based signalling and reducing congestion and the AWT of vehicles. The main objective is to provide a different traffic management and the avoidance of congestion and providing priority to emergency vehicles are considered and also priority significant vehicles. In this project, real time data and mimic human reasoning is used. This project is routed traffic based on real time data and does not need to derive any data patterns afterwards because of WSN is the least costly approach. The energy will be collected by solar panel from the sun during day time, driving the LED lamps at night. Here, the circuit is developed and fabricated so that it can charge the lead acid battery during day time by using solar energy as the source. It would require the use of an Arduino to control many of the circuit functionalities including switching, controlling driver circuit and integrating sensor output etc. Our device will be active at night by using solar energy. Our proposed device is life span, low cost, high efficiency and low power consumption.