Electricity Generation by piezoelectric effect in Injection Moulding

[nomi.dawlance]

Hello,

Actually i want to make use of Clamping Force of Injection Moulding Toggle System to produce Electricity by making use of Piezoelectric effect. For example, if we place a quartz crystal (or any other piezoelectric material) on either side of the platen, then on each machine cycle, when force will be exerted on it, will electricity produced in this way be sufficient? We have moulding machines ranging upto 600T, so it means that we can produce huge amount of electricity. Please someone help me in finding out theoretical wattage of electric power generated.

Best Regards,
MUHAMMAD NOUMAN

 

[davenn]

Hi Nomi

will electricity produced in this way be sufficient?

sufficient for what ?

I would expect the power generated to be relatively small.
Gas cooker etc lighters produce quite a spark when the quartz is struck, several 1000V, but the amount of current generated is tiny and hence so is the power (Wattage)

to get significant current, you would have to have significant sized crystals

here's a section from the wiki page on potential uses...

Potential applications[edit]

In recent years, several attempts at the macro-scale application of the piezoelectric technology have emerged [42][43][44] to harvest kinetic energy from walking pedestrians. The piezoelectric floors have been trialed since the beginning of 2007 in two Japanese train stations, Tokyo and Shibuya stations. The electricity generated from the foot traffic is used to provide all the electricity needed to run the automatic ticket gates and electronic display systems.[45] In London, a famous nightclub exploited the piezoelectric technology in its dance floor. Parts of the lighting and sound systems in the club can be powered by the energy harvesting tiles.[46] However, the piezoelectric tile deployed on the ground usually harvests energy from low frequency strikes provided by the foot traffic. This working condition may eventually lead to low power generation efficiency.[47]

In this case, locating high traffic areas is critical for optimization of the energy harvesting efficiency, as well as the orientation of the tile pavement significantly affects the total amount of the harvested energy. A Density Flow evaluation is recommended to qualitatively evaluate the piezoelectric power harvesting potential of the considered area based on the number of pedestrian crossings per unit time.[47] In X. Li's study, the potential application of a commercial piezoelectric energy harvester in a central hub building at Macquarie University in Sydney, Australia is examined and discussed. Optimization of the piezoelectric tile deployment is presented according to the frequency of pedestrian mobility and a model is developed where 3.1% of the total floor area with the highest pedestrian mobility is paved with piezoelectric tiles. The modelling results indicate that the total annual energy harvesting potential for the proposed optimized tile pavement model is estimated at 1.1 MW h/year, which would be sufficient to meet close to 0.5% of the annual energy needs of the building.[48]

unfortunately it doesn't give any indication on the area covered by the piezo floor tiles

maybe you can do some more research and see what you can find out

cheers
Dave

http://en.wikipedia.org/wiki/Piezoelectricity

 

[AlephZero]

The modelling results indicate that the total annual energy harvesting potential for the proposed optimized tile pavement model is estimated at 1.1 MW h/year, which would be sufficient to meet close to 0.5% of the annual energy needs of the building.[48]

That sounds nice until you divided 1.1 MWh by the number of hours in a year (8760). You could probably think of much cheaper ways to save an average of 125 watts than this proposal - for example unplug a couple of light bulbs!

 

[davenn]

haha indeed

D

 

[nomi.dawlance]

Thank you for your replies...
Actually the utilities (lightening and fans) load of our department is about 10kW, which i want to get compensated with the regenerative techniques...We have 45 Injection Moulding Machines (mostly with 400T clamping force) and we want to generate electrical energy through piezoelectric effect, by making use of machine strokes (cycles). Will it be feasible? Will the energy harvested be sufficient to carry the load of utilities, defined above?

If no, then can you suggest any other solution for energy regeneration.

Regards

 

[nomi.dawlance]

Regenerative Energy from Injection Moulding Machines

Thank you for your replies...
Actually the utilities (lightening and fans) load of our department is about 10kW, which i want to get compensated with the regenerative techniques...We have 45 Injection Moulding Machines (mostly with 400T clamping force) and we want to generate electrical energy through piezoelectric effect, by making use of machine strokes (cycles). Will it be feasible? Will the energy harvested be sufficient to carry the load of utilities, defined above?

If no, then can you suggest any other solution for energy regeneration.

Regards