Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Gold/Mining/Energy : Gold Price Monitor -- Ignore unavailable to you. Want to Upgrade?

To: Richnorth who wrote (83989)	3/30/2002 10:13:29 AM
From: Stephen O	Read Replies (2) \| Respond to of 116972

Helium is used to give you the squeaky voice, I suppose hydrogen could do it too.

To: Richnorth who wrote (83989)	3/30/2002 10:40:06 AM
From: IngotWeTrust	Read Replies (1) \| Respond to of 116972

& Ur airheaded point re: Hydrogen on this POG would be.....?<eom>

To: Richnorth who wrote (83989)	3/30/2002 1:08:07 PM
From: E. Charters	Respond to of 116972

I don't know about hydrogen giving you a high pitched voice. I know helium does. This was the gas used by scuba divers as a safer mix gas than nitrogen and this mickey mouse voice effect was noticed. (Do you want cheese with that Jacques?) Hydrogen would not do, you are right. It does not store well, whereas gold stores very well and does not seep out through tiny seams in seals. H2 is bad for that. It even goes into pores in metal. But the explosive qualities of hnydrogen are very overated. A tank of hydrogen is far less explosive than a tank of propane, butane or methane. These latter will really explode fast. A bullet-penetrated tank of hydrogen gas will just burn at the exit hole with a moderate blue-orange flame, not explode like a tank of propane will under similar conditions. What is not generally thought of, is that the Hindenburg was survived by 19 or so people who were aboard. The flames went straight up and thus many were saved. It did not explode, but burned - quickly I will admit, however. If you want to deliver hydrogen gas quickly to an engine or fuel cell, it can be done quite safely by asborbing it in a carrier such as iron chips or other absorbent, and then heating it gently with an electric warmer to evolve just the quantity you need to run the engine or other device in an ongoing process. This smaller amount means less accumulation or trivial since the storage is at low pressure. Disadvantages are the weight of the carrier and non immediate evolution of fuel, but with a battery system and the normal weight of fuel carried anyway this is not that big a problem. Mercedes Benz has tried this system on buses. Nowdays hydrogen pressure tanks are as safe as propane or safer and are evolving. I don't know if you can add mercaptan as an odour gas to hydrogen. This is done with the other odorless, colourless gases such as propane and methane (NG) for safety. Gases that are lighter than air such as methane and hydrogen and can be detected as hydrogen can are safer than the heavier-than-air propane which collects in low areas. Care must be taken with all combustible gases that explosive mixtures are not made with air. Hydrogen could form pockets in roof areas as methane does in mines although because of its diffusion rate, this is less likely. All fuels are dangerous. Hydrogen's high diffusion volatility as a gas and its ease of combustion means that standards of handling must be stringent as in handling jet fuel and the like. (You see very grave procedures followed with the handling of jet fuel at an airport. But in fact it is far less combustible and fume prone than ordinary gasoline. Jet B is kerosene and diesel fuel. It's the expense of replacing the jet that leads them to caution.) Gasoline is very, very combustible. If you want an exciting experience just ignite two gallons of spilled gasoline in a closed room. (DON'T) Many auto crash victims die in fires, unable to get out of cars before the ten or so gallons of gasoline burns the inside. But we are inured to these dangers because of commonality of the substance. EC<:-}