how high is the energy demand?
does any body know how much energy is needed for shredding and melting?
How do you get or produce the energy for it?
many greetings from potsdam
shredding, depends on the quality and efficiency of the motor and gearbox, but its between 1-2 Kw for the lower segment, 2-3.5 Kw for stronger motors.
melting, the standard for extrusion and injection use around 4x heatbands at 160 – 250 Watts, some use strong ones. and the motor requires around 1-3 Kw, depends on the kind of objects: beams, etc…
I am not sure about your other question (energy is taking usually from that magic plug in the wall 🙂
greets from a Dresdner
thanks that helps fo now.
The second question is more a question about the ecological balance of recycling plastik in this way. Does it make sense to reuse plastik, when we consume a huge amount of energy while we recycle
i forgot to add the motor power for the extrusion so I updated the post for the missing 1-3 Kw to extrude.
the sustainability or ecological factor of this machines is a very controversy issue, see comments about PP on youtube and hackernews… to me it’s more about getting people started working on the issue itself. I see PP rather as an entry or inspiration, I know some who switch to more efficient machines/tools which are more suited to their product/project.
currently, there are developments to lower the energy demand but you’re right, recycling comes with a hefty penalty for the environment, just put the numbers in any of those greenhouse calculators on the net, it’s rather shocking what a kg of plastic takes to recycle.
for now I can just hope for better machines 🙂
so yes, there 2 camps here, those who want to recycle just as much as possible, and those who turn smaller amounts into something ‘precious’, artful, useful .. i can’t tell the difference per se
Thank you very much. I was afraid of that. So try to go green on the way to energy production
using pre-industrial tools, ie a large water wheel mill could shred lots of stuff, possibly also the energy for everything else. say 8m diameter, 2 m wide or so may work. in the mountains you have plenty of that 🙂
here some more reference numbers : https://davehakkens.nl/community/forums/topic/solar-powered-precious-plastic-container/, pretty much the same.
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