jray3 wrote:I've yet to try out the i-Pumped Storage Range Extender. It requires one to stop and fill a water bladder at the top of a hill, and gain greater regen on the way down thanks to the added weight. One must then dump the contents at the bottom of the hill (I'm picturing a fast acting dump valve/ripcord that you can use on the fly. Of course, use caution to not create hazardous conditions for a vehicle behind you- unless they are henchmen of Dr. Evil!
misterbleepy wrote:The mk.2 version will include a small turbine on the outlet pipe to generate electricity to recharge the battery when the water is dumped.
misterbleepy wrote:In the UK the almost continuous rainfall will keep the battery topped up without the need to actually plug in to a charger.
HParkEV wrote:I know in Ontario, the power supply to the grid is mostly adjusted by varying the water flow through hydroelectric dams (24% of total power generation in 2012) and varying output of natural gas fired generating plants (18%). Most of our base load power comes from 18 nuclear reactors (54%) which are pretty much running full tilt and their output is not variable. The remaining generation is coal (2%, and not easily throttled) and wind/solar (also 2%, obviously very variable).
HParkEV wrote:I was actually considering getting a NLR PWRD vanity plate for my i-MiEV, but you can't order those for the 'Green' plates that we get on EV's.
misterbleepy wrote:Don't forget if you start taking CO2 output of electricity generation into account for electric vehicles, you need to take into account CO2 emissions of producing and transporting petrol/diesel fuel as well as the CO2 produced burning it in the car for a meaningful comparison.
How far can an iMiev travel on the electricity used to refine 1 gallon of petrol? I've seen figures between 3KWh and 12KWh for the power required to refine 1 gallon - call it 6KWh and I reckon an iMiev could go 20 miles on that electricity...
Kuuuurija wrote:You need to take into account, that fuel for thermal power plants is also mined, processed and transported. Even wind turbines and hydro plants have its CO2 footprint.
For instance, in Estonia, there are predominantly oil shale burning powerplants and an EV consumes for 100 km distance ca 50 kg of oil shale, dumping ca 50 kg of CO2, ca 15 kg of ashes and ca 20 litres of waste waters.
Kuuuurija wrote:At least here in Estonia it is pretty obvious, that EV-s have much higher CO2 footprint than average ICE car. 50 kg of CO2 per 100 km is ca double of amount of gasoline engine wastes even if to into account all CO2 that is dumped by oil wells, pipelines, refineries, gasoline transporting tankers and gas station network.
If to take into account construction of powerplants, equipment for plants, power grid, ditching the mining areas (peat releases lot of CO2 after ditching), then the CO2 emission is even higher for EV.
Solar power cells hardly produce enough eletricity to cover its construction costs (in Estonian conditions) and during the construction so much CO2 is released, that per energy production it is not so different than our oil shale plants. There is no clean electric energy. Nuclear plants release huge amount of CO2 also. And lots of highly toxic wastes too. The bluff of CO2 clean EV-s is possible only when share of EV-s is marginal. As soon as the share will be considerable, the rise of pollusion will be obvious.