[python] Re: electric python
- From: "Bolle, Cristian A \(Cristian\)" <bolle@xxxxxxxxxxxxxxxxxx>
- To: <python@xxxxxxxxxxxxx>
- Date: Thu, 29 Nov 2007 09:30:53 -0600
Just to give some numbers:
> I'd be interested to see what the amount of coal burned to produce
that
> recharge is?!?
This may be roughly the bicycle you're talking about:
http://www.myebike.com/bikes/lite2.html
The battery carries 24 volt, 6.5 ah or 0.156 kWh, assuming you can
completely drain it. The charger efficiency is not great, around 30%,
see:
www.efficientproducts.org/reports/bchargers/NRDC-Ecos_Battery_Charger_Ef
ficiency.pdf
This would translate roughly into 0.5 Kg CO2 to charge the battery and
would take you on a maximum 45 Km trip. The emissions per Km traveled
would be 11 gram Co2 per Km traveled in the best case.
This link give some Co2/KWh numbers:
http://www.uic.com.au/ComparativeCO2.htm
Some more searching on the web:
A person in comparison, exhales carbon dioxide (the rate is
approximately 1 kg per day, and it depends strongly on the person's
activity level)
The link is: http://cdiac.ornl.gov/pns/faq.html
(I couldn't find the emissions as a function of effort)
And then the typical emissions of a car:
http://www.carpages.co.uk/co2/
The Toyota Prius stands at 104 g/Km while the average American SUV sits
in the 225-250 g/Km range.
The emissions to build, ship, sell and maintain the bicycle or car
should also be included in the calculation for the typical lifetime of
the vehicle.
This means that you can have 20+ Chinese guys for every guy in an SUV.
Cris
============================================================
This is the Python Mailinglist
//www.freelists.org/list/python
Listmaster: Jürgen Mages jmages@xxxxxx
To unsubscribe send an empty mail to
python-request@xxxxxxxxxxxxx
with 'unsubscribe' in the subject field.
============================================================
Other related posts:
