Thinking about CNG - Page 2

Bill in Houston · 06-02-2007, 04:34 AM

Quote:

Originally Posted by omgwtfbyobbq

but I think it's suitability depends on how much escapes, at around 5% it's equivalent to gasoline in terms of GWP, but if it gets near 10% gasoline whips it's butt.

Losing even 5% would be pretty alarming, I think? Shouldn't the amount lost due to leaks be like maybe .1%? I'm thinking of air hoses and their fittings and assuming that Phill and the GX would be at least as good. If Phill lost even 1%, he'd be blowing up garages pretty regularly... From a consumer acceptance standpoint, Honda would need to make sure that people didn't smell gas in their garages. And from a liability standpoint, they would want to make sure that at the time of line uncoupling, the volume around the coupling that exceeded the LEL would need to be really small... Okay, I think I'm done.

zpiloto · 06-02-2007, 05:47 AM

I find it interesting that CNG and LPG would be worst for GHG and GWP due to leakage in getting it. You would think that the small amount that is leaked would be offset by the amount of reduced GHG from being burned. It's never easy. Here's some more info on emissions.

omgwtfbyobbq · 06-02-2007, 08:44 AM

Quote:

Originally Posted by Bill in Houston

Losing even 5% would be pretty alarming, I think? Shouldn't the amount lost due to leaks be like maybe .1%? I'm thinking of air hoses and their fittings and assuming that Phill and the GX would be at least as good. If Phill lost even 1%, he'd be blowing up garages pretty regularly... From a consumer acceptance standpoint, Honda would need to make sure that people didn't smell gas in their garages. And from a liability standpoint, they would want to make sure that at the time of line uncoupling, the volume around the coupling that exceeded the LEL would need to be really small... Okay, I think I'm done.

It's not just at the car, although that's probably significant, but over the entire supply chain. It's only a problem because CNG traps roughly 60 times more heat than carbon dioxide, so any and all emissions result in a big spike in GHGs.