Does it have a toilet on board, or even several, I wonder! (like the graphics on the side).
- posted
9 years ago
Does it have a toilet on board, or even several, I wonder! (like the graphics on the side).
I wonder what the proportion of methane to added propane is.
Yes, nice jobbie on the graphics ;-)
What sound does the bell make when you press it to get the bus to stop?
"To power a vehicle, the biogas undergoes "upgrading", where carbon dioxide is removed and propane added"
So it's propane powered, with a bit of digestive methane. Not very Bio at all...
Andy
If I had to guess, I'd say "DUNNNG!!!" :-)
I don't think it's anything like that. Bio-methane has a calorific value of around 36 MJ/m3, while AIUI if you want to inject this into the national gas grid, you have to upgrade its calorific value to 39.5 MJ/m3, to meet appropriate standards. This is done by injecting a little propane (93.3 MJ/m3), around 7% of the mix if my maths is correct. While I doubt that the propane injection is specifically needed for the 'No.2 Bus', I assume that the bulk of the bio-gas from that particular source is for injection into the national gas grid, so they upgrade all of it and the bus only uses a small percentage of that.
...is the correct answer ;-)
You may well be right. I hope you're right. But I am a cynic...
Andy
Is it coincidence that it?s in the home of the Bristol Stool Scale, I wonder?
Or indeed, whether it has anything to do with the source of mysterious 'Bristol Hum' of a few decades ago? Do the buses hum? The stuff that makes the methane certainly does!
HomeOwnersHub website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.