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welshboy
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« on: August 05, 2010, 07:38:09 PM » |
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knighty
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« Reply #1 on: August 05, 2010, 10:58:46 PM » |
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I was in an Iveco (van) main dealer last week, and looked through a broacher while I was waiting.... they've had vans available for over a year that run on compressed natural gas..... not sure how the tax works on the gas... but it would save me a fortune ! I'd snap one up straight away if I could fine a second hand one !
(edit, not sure on the range, but they're dual fuel = petrol and compressed natural gas - so if you run out of gas it automatically switches back to petrol!)
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« Last Edit: August 06, 2010, 12:26:16 AM by knighty »
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daftlad
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« Reply #2 on: August 05, 2010, 11:10:14 PM » |
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How much energy would a compressor use?
How much would one cost?
Sounds like a plan to me.
ta ta
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I WILL KEEP BANGING ON ABOUT MASONRY STOVES
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Baz
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« Reply #3 on: August 06, 2010, 12:13:28 AM » |
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Methane is not much different from propane or hydrogen in combustability terms. The problem has always been that it doesn't liquify at sensible pressure like propane. Hence big heavy tank or short range. However should be comparable to electric for short commutes. One of the best ways to handle it I think is disolved in propane which makes it behave like a liquid.
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Heinz
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« Reply #4 on: August 06, 2010, 02:38:43 PM » |
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snip - One of the best ways to handle it I think is disolved in propane which makes it behave like a liquid.
Have you got any more info on this??? Regards, Heinz |
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"Do, or do not. There is no 'try' " Yoda
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Amy
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« Reply #5 on: August 06, 2010, 03:06:33 PM » |
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After last nights catastrophy, whereby I personally produced enough gas to propell a vehicle a not inconsiderable distance, Good cooking tip No. 1 Always use a pinch of crushed chilli and do NOT shake the packet over the pan of bologanse sauce when intoxicated.  |
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Ivan
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« Reply #7 on: August 07, 2010, 01:31:41 AM » |
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I've recently taken delivery of a natural gas compressor. The idea being to run my current car (VW passat petrol) on natural gas. Unfortunately, I've since discovered that the petrol injectors will melt if I try to run exclusively on CNG, so I need to get a special CNG/petrol duel-fuelling kit, which no-one seems to have in the UK. Will have to import a kit direct from Italy, it seems.
I've read that natural gas dissolves in propane at around 35%. However, air dissolves in water, but it's not the easiest thing to do quickly, so I'm not sure it's that beneficial.
Methane cannot be compressed to a liquid at normal temperatures. You can compress it as much as you like and it will remain a gas, unless you drop the temperature considerably (liquid gas ie LNG is stored/transported at -160C)
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Navitron Member of Staff www.epogee.co.uk - Solar PV & Solar Thermal Training / MCS |
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daftlad
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« Reply #8 on: August 07, 2010, 01:44:15 AM » |
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Are you supposed to pay road fuel tax on compressed natural gas? If you fill up your car with LPG from a tank in the garden then I think you should pay tax on that as well? I guess it is like running on red diesel except you can tell the difference between red and white diesel.
ta ta
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I WILL KEEP BANGING ON ABOUT MASONRY STOVES
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knighty
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« Reply #9 on: August 07, 2010, 02:36:47 AM » |
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Ivan..... got any links to sources for parts/kits and information ?
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Rupson and Aliert
Newbie
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Posts: 16
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« Reply #10 on: August 07, 2010, 08:38:26 AM » |
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My parents live in Bulgaria and the taxi that takes them to and from Sofia airport runs on methane, fills it up like normal LPG at a filling station and off he goes ! Seems they import from good old Russia! Not just us relying on them for gas !
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knighty
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« Reply #11 on: August 07, 2010, 02:35:36 PM » |
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they use methane a lot in india too, most of the taxis/rickshaws/etc... run on it.... but they use compressed liquid methane, not gas
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desperate
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« Reply #12 on: August 07, 2010, 06:41:40 PM » |
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I thought Methane had to be cooled way on down to get it to liquidize at any pressure??
Desp
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rogeriko
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« Reply #13 on: August 07, 2010, 11:52:53 PM » |
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It seems that india and many other countries are already mass producing this technology, Google CNG cars and it seems like Britain is once again getting left behind. There are roughly 8.7 million compressed natural gas vehicles in use worldwide. A couple of websites http://www.gasfill.com/http://www.cngnow.com/EN-US/Vehicles/Pages/default.aspx |
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« Last Edit: August 08, 2010, 08:27:29 AM by rogeriko »
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knighty
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« Reply #14 on: August 08, 2010, 12:38:49 AM » |
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I thought Methane had to be cooled way on down to get it to liquidize at any pressure??
Desp
yes, -160'C to get it to liquid - from what I've read it doesn't even need much pressure, it's the cooling that's important! (I have no idea why tho) I'm assuming once you have it as a liquid you can store it at normal temperatures and it stays as a liquid, until you release some pressure and it'll boil off.... where you can take the gas to run your engine.... - this bit is a bit of a guess / reeding between the lines, so don't quote me on it.... but as far as I can see it is the only way it can be used ? (as liquid) |
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