On 24/06/16 13:02, David Lochrin wrote:
On 2016-06-24 10:13 Tom Worthington wrote:
Battery technology has reached the point where it would be feasible to use
electric buses, without the need for overhead wires.
I don't think battery technology is anywhere near that point. The Transport for NSW specification
(2012) states the "daily operating duration" for all except school busses is "18
hours per day or up to 450 km per shift. Buses must be capable of achieving this without the need
to refuel."
It has struck me that buses are excessively large - I expect a
significant part of this is due to the fuel they are carrying. Not
having to transport fuel to the depot and the reduction in noise would
make electric buses more attractive so, I expect the spec and the
infrastructure would be different for electric buses - perhaps powered
by batteries charged by wind power.
The *BYD electric bus* or *BYD ebus*, called K9 in China, is a battery
electric bus <https://en.wikipedia.org/wiki/Battery_electric_bus>
model manufactured by Chinese automaker BYD
<https://en.wikipedia.org/wiki/BYD_Auto>, powered with its
self-developed Iron-phosphate battery
<https://en.wikipedia.org/wiki/Lithium_iron_phosphate_battery>,
featuring the longest drive range of 250 km (155 miles) on one single
charge under urban road conditions.
...
* *Fast charge*: 3h for full charge^[19]
<https://en.wikipedia.org/wiki/BYD_electric_bus#cite_note-R30-19>
^[20]
<https://en.wikipedia.org/wiki/BYD_electric_bus#cite_note-R302-20>
* *Or overnight charging*: 60 kW Max.power to fully charge the bus
within 5h
https://en.wikipedia.org/wiki/BYD_electric_bus
Marghanita
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