5500 psi cng?

[scottfetsh]

looking at Lincoln composite website they are making 5500 psi tanks for hydrogen. if the tank is good enough for hydrogen maybe you could use it for cng, after all there is a difference between 3000 and 3600 in volume. all you would need is a regulator to bring it back down to 3600, probably mounted to the tank would be best, and better dispenser connection. hmm! re engineering the wheel again.

[Timon]

Re: 5500 psi cng?

The issue in the the vehicle but the stations. Building 5,000 psi stations cost a lot more then 3,600 psi stations because a 5,000 psi station would need close to 7,000 psi in it's storage tanks. Also the compressors really get expensive.

[cngmike]

Re: 5500 psi cng?

It could be done with time fill but every thing before and including the high pressure reg would have to be upgraded. of corse there are no NG compressors that I know of that are rated for 5500 psi. 5000 is the max I've seen.

[Adrian]

Re: 5500 psi cng?

It could be done with time fill but every thing before and including the high pressure reg would have to be upgraded. of corse there are no NG compressors that I know of that are rated for 5500 psi. 5000 is the max I've seen.

5000 psi would be great ! That would push the range on my Civic close to 400 miles.

[cngmike]

Re: 5500 psi cng?

Got $2800? Thats what that tank costs.

[Adrian]

Re: 5500 psi cng?

Got $2800? Thats what that tank costs.

How about the compressor? If 5000 psi ever becomes available for CNG delivery, I would consider it. Or, change the tank to the 5500 psi tank, fill it up to 3600 with CNG then go to 5000 with H2 like someone suggested in another thread?

[Andy-Paul]

Re: 5500 psi cng?

In this instance, I think that CraziFuzzy's idea of 3.6kpsi with some sort of adsorption medium would be a lot more effective, both wrt tank price and range. 5500 psi is getting into ceramic compression fracture range, and that's enough force to make PRD's more of an engineering issue, isn't it?

I'll wager a cold one that ANG is the path we'll end up taking within the next 5 years. Tanks weigh less empty, more trunk space after conversion, requires less engineering after the R&D stage, would be less scary to the general public (surmisal), and makes a cheaper filling station (SWAG).

andy-paul