Abstract
Indonesia is a country that has a fairly high rainfall, because it is located in the tropical area. This condition could be a potential for generating electrical energy from raindrops. If the heavy raindrop collide the piezoelectric materials, it can generate electrical energy. The piezoelectric effect was discovered by Jacques and Pierre Curie in 1880. They found that certain materials, when subjected to mechanical strain, suffered an electrical polarization that was proportional to the applied strain. This piezoelectric effect converts mechanical strain into electrical voltage. The molecular structure of piezoelectric materials produces a coupling between electrical and mechanical domains. In this research, raindrops will be exploited to produce electric voltage by piezoelectric transducer. Piezoelectric transducer used in this research is Lead Zirconate Titanate type. Energy conversion processing occurred when raindrop collide the polymer layer of piezoelectric and make an unelastic thrust on its surface. The designed system consists of raindrops collector board and serial connected piezoelectric transducer. From system above, highest voltage, reach is 3.13 VAC for 30 piezoelectric and the average voltage is 2.617 V. This results show us the potential usage of raindrops energy generator using piezoelectric transducer for tropical countries.
Highlights
In 2011, the Central BKKBN recorded the population of Indonesia reached 241 million people
Based on simulations ever conducted by some researchers [1], with the size of rainwater points ranging from 1 to 5 millimetres produced 12 milliwatts. This energy conversion process occurs when the raindrop points on a polymer surface called lead zirconate titanate (PZT) and produces an inelastic beat above its surface
From the calculation and simulation with piezoelectric installation done in series and parallel that aims to generate optimal electrical energy
Summary
In 2011, the Central BKKBN recorded the population of Indonesia reached 241 million people. The end of 2012 is expected to reach 245 million people With such a large population, Indonesia's electricity consumption is only 591 KWh per capita based on International Energy Agency (IEA) 2010 data. It is among the lowest in ASEAN and in some parts of the world. In this study is used piezoelectric transducer to change the vibration generated by rainwater point This system can be used for various sizes of raindrops. Based on simulations ever conducted by some researchers [1], with the size of rainwater points ranging from 1 to 5 millimetres produced 12 milliwatts This energy conversion process occurs when the raindrop points on a polymer surface called lead zirconate titanate (PZT) and produces an inelastic beat above its surface. In developing the feasibility of rainwater as an alternative energy source it will be done by putting some piezoelectric under rainwater droplets and will see how much electricity generated from various parameters such as: discharge or falling rainwater volume
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