How make electrical energy from starfruit (Avverhoa bilimbi)

Starfruit which in Latin is known as Avverhoa bilimbi are native American plants thatthrive in many areas that get direct sunlight but enough humidity. Starfruit is a hard-trunked plant reaches a height of 11 m. Usually planted in a quite place to get sunlight.The stem is hard and not much branched. The fruit is light green, oval of your thumb and sour taste. The fruit is often used for cooking, so often called starfruit or vegetable to clean the stain on the fabric such as brass and copper. The leaves are small, face to face. And star-shaped flowers are pink to purple. Picture below shows starfruit.

Ingredients and Benefits starfruit: leatherback wuluh useful as anti-inflammatory because it contains flavones. In addition, potassium smooth discharge of urine (diuretic) that can lower blood pressure. Starfruit also able to remove phlegm and reduce heat. The fruit contains substances: acid-potassium-akolat. This is one of the usability of starfruit out as an alternative energy source.

Starfruit that thrives in the yard, can be transformed into a substance capable of decomposing produce alternative power, amid complaints of residents will increase electricity costs. To create electrical energy, the first star fruit commonly used as avegetable is mashed to take water. Furthermore, using soil media placed in a glass of mineral water is used, water is injected star fruit taste.

Furthermore, each cup containing soil mixed with star fruit juice was associated with aseries of copper wire and zinc plate, the electric current to flow. The result, the energycreated by the voltage listrikpun fairly, ie up to 5 volts, enough to turn on the lights. The resulting voltage is also greater than the voltage of the battery stone fruit.

Tools and materials needed:

1) starfruit

2) Blender

3) glass plastic

4) Land

5) Water

6) copper plate (the positive electrode)

7) Plate zinc (as a negative electrode)

8) Cables

Alternative ways of making energy from  starfruit :

1) Blend until smooth  starfruit  (so starfruit juice; ripe apple juice) to obtain awater-like fluid (without the fiber / pulp).

2) Prepare the plastic cups and filled with clay (not sand or soil containing waste). Glasscan be from of residual mineral water drinks.

3) Put  starfruit  juice into plastic cups that are filled with soil.

4) Arrange a row of glasses that have been filled with soil and juice starfruit

5) Create a series of electrodes to connect between the plates of copper and zinc plates using a cable (with cable approximately 15 cm each)

6) Develop a series of electrodes into the ground glasses have been prepared in advance, with the copper plate-plate arrangement of zinc-copper plates and so on, so the glass will contain a composition of a copper plate and a zinc plate electrodes of different circuits

7) Prepare two sets of electrodes with longer cable and just use only one plate, one copper and one zinc. For the glass outer (first and last cup that has only one plate: the first glass plate of copper and zinc last glass plate) connected with a series of new electrode. The first glass with a series of zinc, glass last connected with the coppercircuit. End of this last series of two cables that will connect with the lamp will be lit.

8) Be simple circuit of this alternative energy generation. One glass can produce energy at 0.5 volts, so to produce a larger energy should add the number of glasses in the series to be created. One glass of this series can last for about 15 days.

This electrical energy is created because starfruit has a high acidity level to be able to conduct ions and electrons are there on a piece of copper and zinc. Thus create an electric current. On average, 10 points starfruit is capable of creating an electric voltage up to 2.5 volts, equivalent to one dried fruit batteries. Even in his experience, the electrical energy of the star fruit vegetables can last up to one month old.

Development of starfruit as alternative energy sources must be developed because of the potential of the star fruit grown in Indonesia is very high. So later after developing alternative electric energy can be packed in a practical form of energyproducts like batery. So, it can be developed as one of the energy alternatives that impact electricity rates amid increasingly hard for small people.

Alternative Electric Energy From Bumps (Police Trap)

Lecturers and students of Mechanical Engineering Ten November Institute of Technology(ITS) Surabaya developed bumps (police trap) on the road as a producer of electricity.
Such a device could be assembled as the user desires to the needs of street lighting or building.
The work has been tested before it passes a list of 20 finalists in the National InnovationContest 2011 at the Institut Teknologi Bandung, 4-5 February 2011.

Bump shape is specially designed. In the middle between the rise and fall, there is aboard sticking out of the bottom manifold fitted with a spring steel helix or coil.

Board height from the top of slope or derivative of about 2-3 centimeters. "It inhibits the rate of the vehicle," said Buzz Team Made Yudithia ITS Krisnabayu told Tempo on the sidelines of the exhibition at the Campus Center ITB east.
Every time a car or motorcycle wheels ran over bumps, the kinetic energy usuallywasted arrested last spring as a potential energy applied to the generator torsional.Simple homemade generator that is placed next to the police board was set up to sleepto save energy every six ran over happen. "The Innovations in energy storage in thisgenerator," said Dewi Diandra Devia, other team members.

Than six times ran over car or motorcycle, can accumulate electricity at 10.5 watts.Currents can be converted from AC to DC. That energy is then saved in a battery orbattery (batteries) before being used for lighting streets or buildings.

Whatever the weight and speed of the vehicle when it ran over bumps, the amount ofelectric power generated remains the same. But should be avoided ran over truck type vehicle that is not easily damaged equipment.



Ideally, says 20-year-old university student, the appliance is placed in the Publicrefueling stations (gas stations), around the door of the bar parking lot, and drive-thrukiosks. "The electricity produced can be used to illuminate places like that," he said.

The cost of making the special police Rp 1.5 million per unit. Its resistance range of 1.5 to 2 years. The device according to them, much cheaper than the cost of electricity consumption per pole street lights are lit 10 hours of Rp 2.3 million per month.

After later patented, says Diandra, a tool that was conceived and developed in conjunction Must Laksana Guntur, lecturer Field of Study Design EngineeringEngineering Program ITS, is planned to be offered to local governments.