Quote:
Originally Posted by SolRaven
I would love to see your research on that. If you have it available, feel free to PM me.
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I don't do research. I just make my opinion based on facts.
And, instead of PM'ing you (and everyone else), I'll answer here for everyone to read.
Battery pack:
Made either of lead-acid type or lithium-ion.
Lead and sulphuric acid is not environmentally friendly, neiter in production, nor if leaking into environment, should an accident occur.
Lithium is not environmentally friendly to produce and if let into nature, more poisonous than cyanide.
Besides, lithium-ion batteries are prone to explode if overheated. Lithium burns with a temperature of 6.000C or 10.800F.
Electric motor:
The varnish used on windings are mostly PCB and a coctail of other not very environmentally friendly components.
Consumption economics:
A modern diesel driven engine typically gets about 40-45% energy out of the specific energy potential of diesel oil.
An electric motor typically has a efficiency level of 85%.
Lets assume (as still in many countries) you get electricity by coal. (In several countries in Europe, nuclear power is banned or restricted).
1kg coal gives about 1/2 of the specific energy potential as diesel, but produces twice as much CO2. Thus, to get the same energy level out on the wheels of a car, you typically need twice as much, which then gives 4 times the CO2 emission.
Then there is cable loss in the power cables from the power plant to your house or charge station. Let's for conveniance say 15% (which is a common value).
Then again, a charging battery only utilises 50% og the enery. Thus, to charge (just to take a number) 1KW into a battery, you have to "give" it 2KW.
So, a diesel engine car manages to utilise about 40-45% of the energy potential of the fed diesel.
An electric car will utilise: 85% of the power plant fed electricity, 50% of the charged energy and 85% in electric motor efficiency. In addition, we started out with twice the CO2 emission.
So, 0,85*0,5*0,85 gives ~36% efficiency.