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Lol! I am a moron...yeah me too.
You are such a weak troll. I work with natural gas things that can go boom in a big way if you up.Hmmm. Sounds scientific enough.
Lol! I am a moron...yeah me too.
ok, I get it. You're still sore over yesterday's gun talk. Your expertise about natural gas is clearly abundant. Do you want to troll me and I'll pretend to get hooked? Then we can be even.
Thats what I was trying to get at. Its a gas so when there is a leak it will disperse in relatively quick order but subject to flame bad things will happen.
anything involving flammibles and pressure is potentially dangerous. But it's fairly well do ented that natural gas is a viable and safe alternative to gasoline for powering motor vehicles. You said that safety was a primary reason why ng powered vehicles aren't more prevalent. Which I disagreed with. And you haven't provided any real back up for your argument. Unless you're using CosmicCrackpots posts about "boom" and bad things happening.
I found this:
http://www.ornl.gov/~webworks/cppr/y2001/rpt/115272.pdf
It says that its currently the same as standard vehicles. FurtherThe key safety concern for the electric drive system is the higher voltages and currents that are required in the electric drive system. Faults that could expose personnel to these electric hazards must be considered, addressed, and minimized. The key issue for the CNG-fueled ICE is containment of the high-pressure natural gas. Events that can result in a release of natural gas with the possibility of subsequent ignition are of concern. These safety issues are discussed. The heavy HEV has the potential to have a safety record that is comparable to that of the conventional vehicle, but adequate attention to detail will be required.
Which discusses the possibility of leaks lasting a good amount of time. Concerns about wear dud to vibration, your average Joe maintain the vehicle, etc make sense.Failure modes that have been observed for CNG cylinders include intermittent leaks, continuous leaks, fractures, ruptures, and fragmentation ruptures. An intermittent leak occurs when a fatigue crack propagates through the cylinder wall as a result of the stress (i.e., pressure change) associated with repeated filling cycles. When a cylinder with a fatigue crack is at its maximum pressure, the crack is forced open and the cylinder leaks. Intermittent leaks have been observed in all-metal cylinders. Continuous leaks have been seen in Type 4 cylinders as a result of plastic liner defects. The flow rate is typically very low for a continuous leak. A fracture results in a larger opening and a more rapid depressurization than that associated with a continuous leak. In a rupture, the failed cylinder remains in one piece, but damage can result from articles being propelled by the gas escaping at a highvelocity. A fragmented rupture results in the cylinder being fragmented into pieces.
Like I said, most of the rhetoric on the web talking about safety is from the natural gas companies themselves.Electric shock is the event of concern for the electric drive system because of the voltages and currents associated with that system. Battery fires are a concern because of the potential for dissipation of electrochemical energy internally in a faulty battery pack. Short-circuit events are of concern with the inverter because of the high currents and resulting equipment
damage that can occur.
Further
http://www.stnonline.com/resources/7...he-fuel-debateAnother perspective on the matter comes from the Gilling Corp., a manufacturer of heavy-duty transit buses. Despite the lure of federal subsidies Gillig refuses to offer CNG-powered buses. BT asked Denny Howard, Gillig's president, why.
"We don't think (they're) safe," Howard responded. "Natural gas is a great fuel application, it's wonderful when it's in our home--under 15 lbs. of pressure. When you put natural gas in a vehicle it's under 3,600 lbs. of pressure (a necessity in order to get mileage). In your house, keeping tight connections is easy. The house doesn't bounce except in an earthquake. But in a bus, connections move up and down. We don't like the idea of trying to keep [volatile] fuel under 3,600 lbs. of pressure in a [moving vehicle] carrying a bunch of people. One of my neighbors was injured when his barbecue propane tank blew. The tank was under very few pounds of pressure. The incident made us think. There have been a number of close calls in the transit industry. But no one talks about the safety issues until someone [gets hurt or dies.] People [who promote natural gas] say the equipment is safe, but it's human error that causes accidents. When there is an accident [they] always say, 'our gas didn't fail.'"
Note he is saying the same thing I have been saying. Makes me feel better about my memory.
So you searched and the best you could find was a 10 year old report?
Can't you just admit you really didn't know what you were talking about?
Yeah when i am relating what the DOE report says that indicates I do not know anything....So you searched and the best you could find was a 10 year old report?
Can't you just admit you really didn't know what you were talking about?
Youre just trolling now and its pretty boring. Try harder.
You must be the RaZon of the political board.Yeah when i am relating what the DOE report says that indicates I do not know anything....
Youre just trolling now and its pretty boring. Try harder.
That was better but still from the land of the weak. i have been around here for years, gnsf. Its not like your schtick is hard to figure out.
Try switching it up. Try harder.
Two trolls trolling each other.
too ing funny...
Glad you liked it CC. I actually enjoyed learning more about natural gas ICEs.
why people afraid to drive around with a 60ltr gas tank in their car, is the same as driving around with a 60ltr petrol tank, same risks
Not even remotely. Petrol only explodes if its in vapor form. When in liquid it only burns at the surface where its able to get oxygen. Natural gas is already gaseous at atmospheric pressures and fully mixed with air as it leaks when the tank ruptures if there is an explosion, there is more than enough oxygen to go around so it all oxidizes and thus the mass expansion etc. The flash is also twice as hot meaning much more energy is released during the oxidation.
Furthermore, petrol tanks are compartmentalized to mitigate the burn whereas you cannot really do that with natural gas because it just seep as a matter of course. The tanks are also highly pressurized to store for distance travel which creates its own issues.
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