Introduction

Piezoelectric TilesME 54200Fatin BaharuddinAnderson BenjaminAdrienne FairbanksMuhammad Vijasa

Pavegen System Introduction The world demand for renewable energyThe piezoelectric dance floorWhat is piezoelectricity ?

Piezo Derived from the greek word piezin for pressure or squeezePiezoelectricity The charge that accumulates in a solid material (often ceramic) in response to mechanical strain.

Video taken from Brainshark.How the piezoelectric device work in the dance floorExamples of other usage of the piezoelectric conceptTokyo Station, United Stated Defense, France.

LimitationsThe challenges with piezo electrics is not enough energy is provided to be a sufficient power source unless.

Energy is created is when contact is made with the surface of the material.

With crowded populations in specific areas it is still not enough energy to supply the worlds demand for better efficiency. Limitations (Cont)The initial cost to implement them, and higher start-up costs will hinder the expansion of piezoelectricity.

Other limitations to piezoelectric technology are the materials needed to create them. Piezoelectric materials consist of crystals and certain ceramics.

Technology used to produce piezoelectric technology is nanotechnology.

Research shows that nanoparticles do not behave the same way larger clumps of the materials do, and many of them have unknown properties.

Problem Solving Approach

Configuration of Piezoelectric materialPlucked MethodProduces 10 times more electricity than the forced method.Small pick on the shakerFree-vibrateForced MethodDirect force on the shaker

The frequency of the plucked method is 90 times more than the frequency of forced method, and we could obtain that the power is 90 times bigger according to the equation.

Equation & picture taken from thesis of Analysis of high efficiency piezoelectric floor on intelligent buildings. In SICE Annual Conference 2010, Proceedings of (pp. 1777-1780). IEEE.

Energy storagethe vibration that is produced by the plate stimulated a maximum efficiency of 52%.The problem: majority of the energy is stored & is given back to the excitation source that initially caused the charge to be generated.

Minimizing the amount of energy stored in the piezoelectric material, maximum efficiency of power generation can be achieved.

The electrical charge increased when the capacitance increased due to increase duration of oscillation When the initial voltage increased, the stored electric charge decreased, hence, efficiency increased.

Other ApproachLighting system

LED lighting. Picture taken from Green Compliance Plus. Fluorescent lighting. Picture taken from from Active Rain. Environment and Cost (Pavegen System)Recyclable items:Top surfaces of the tiles : 100% recyclable tiresFlooring frame: 80% recycled Aluminum compound and alloys Piezoelectric material: Quart

Immediate cost: 8 slabs = $ 30,800 (Down payment: $15,800)Shipping fee + maintenance + installation = Increase the price even more.

BUT,University of British Columbia managed to save up to $37 608.48 over the tiles lifespan of five years. ConclusionPiezoelectricity is useful and will be a great resource of energy in years to come. Due tothe concerns about the climate change and energy security, some countries now are usingPiezoelectric, such as piezoelectric dance floor or tiles that have been used in many places; buildings, streets, airports, clubs. Drawbacks are there, but this should be seen as challenges for a better world. Safe for the environment and the cost is feasible and practical.