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It's not perfect but burning gas emits less CO2 than burning petrol or diesel. It also keeps all the pollutants out of the city, so public health should increas
by lucaspiller 10y ago
It's not perfect but burning gas emits less CO2 than burning petrol or diesel. It also keeps all the pollutants out of the city, so public health should increase.
- Symbiote 10y agoKeeping the pollution out of London is the best part. By European standards, the city is very polluted, and the old taxis are disproportionately responsible.
- justincormack 10y agoBuses are also a big contributor, although these are gradually being replaced too.
- cjrp 10y agoIndeed, I've taken a 100% electric bus (route 507) and it was very good. No rumbling, polluting diesel engine.
- Symbiote 10y agoBuses in London have been updated to Euro IV standard, and most are Euro V or better. Of course, they are larger vehicles, and pollute in proportion, but at least they don't park in long lines and idle their engines for hours... http://content.tfl.gov.uk/bus-fleet-audit-130117.pdf http://content.tfl.gov.uk/bus-fleet-audit-130117.pdf
- redcalx 10y agoNote there are significant losses in gas turbines, electricity transmission and battery storage. If you burn the gas near to where it's needed then you avoid most of those losses.
- pjc50 10y ago.. but larger turbines are more efficient than vehicle engines. I think Derek MacKay has some numbers on vehicle vs centralised generator, but can't find it right now. (CNG has been an option for vehicles for ages, but for some reason never quite took off?)
- redcalx 10y agoGood point. There will also be an optimal efficiency speed and power level for a given internal combustion engine, which is more likely to be achievable in hybrid cars where the engine powers a generator and is therefore decoupled from providing direct power to the transmission.