Oil Furnace and HHO

[murf26]

Does anyone know of info on how I can add HHO generator to supplement my fuel oil furnace?  I know the two fuels have a different combustion rate but I'm just checking around right now for info.  Thanks!

[Tink]

Yea, I'd like to hear from anyone who has installed a HHO genertor to a propane furnace. Is it possible and if so how did you do it?
Tink

[Bob]

And I'ed like to Know how to use Hydroxy gas alone in the wood stove to replace the wood needed!
...
Unfortionately I don't think there are many people experimenting in this direction...
so that leaves it up to the individual to Figure out how !
....
I too have a Monitor Oil heater...( a clone actually toyostove) and I think injecting a small amount of Hydroxy gas into the air intake should be the way to go on it...
I think a automatic on off control is a nessisity and putting the injection line outside the house is
a good idea... I don't know if the stove would backfire or not...it might, and that might be bad news.
I havn't tried this method yet.
...
as far as the Propaine goes I'ed think a outlet pipe next to the burner would probly be the safest bet
as long as you fixed the outlet to be a good burning torch arrangement.
each of these will have to be controled very percisely or you could have an explosion due to the gas building up and then reach a source of ignition...
this puts a big dampner on the idea for me ... although a wood stove could run constantly  a oil stove or Propaine stove are both thermostatically controled... making the percise control of the Hydroxy gas a must.
...
things to think about anyway...
Bob........

 

[wess]

I also was curious as to why you couldnt put HHO in a propane tank & use it instead of propane in a stove or furnace. Propane is liquid so you would have to use extra pressure probably to get HHO into the tank. I saw a guy on some site that had huge 1000 gal propane tanks in his yard & he said they were full of hydrogen or HHO, I forget which. But he was totally independent of any grid. He produced it & used it for all his energy needs. If anyone has an idea on how to get HHO into a tank to use just like propane I'm very sure everyone would be interested...all the safety features etc. would be already there if you could just switch propane to HHO.....its winter ya know...Any ideas? Anyone--Anyone??..lol.

[randy]

I was able to achieve 120# of compressed HHO in a 5 gallon propane tank, used a switchplate type electrolyser, fully sealed with a pressure gauge attached, connected directly to the intake of a diaphram type compressor, took over an hour to fill, played with a torch with it but it made me nervous so I opened it to the atmosphere, I'd just let the cell get up to 10 # pressure, turn on the compressor till the gauge read 0 then shut off, the compressors shutoff switch was set at 120# repeated until it shut itself down, turned off cell and closed valve on tank.

[candyman55]

Wess,
I don't think that getting the HHO in the tank is a problem. I think that getting it in there without exploding might be the problem. From what I understand hho will explode at 1038 degrees and compressing it makes it warm up considerably. I think that pulling a vaccume on the tank and and the slowly letting it fill itself may be an option.

[wess]

Yea, no one wants to go B-O-O-M!!..Pressure does create heat and your idea of sucking it in as opposed to shoving it in makes sense. But you would need a very large tank if its not pressurized wouldn't you. I am totally dumb on this I will admit but just threw it out to see if anyone had done it or had ideas. I guess Randy experimented with it. I know when you mix lye & aluminum you get alot of pressure & heat from it (Cornish Generator). I thought if you could channel the gas into a tank the pressure would force it into the tank. I believe that the cornish gen. makes pure hydrogen & not HHO. Maybe this is too complicated for amatures to do, I dont know, but its worth looking at & posting on here to get ideas. Thats what made this country...ideas of amatures like us.

[charley]

You know, if a party balloon lit in a shop will blow your hair back a 1000 gallon propane tank full of hho blowing up will probably get you on cnn. 

[hydrotinkerer]

Filling a tank with pure hydrogen would not be as hazardous as hho. Make a cornish type generator out of steel and your in because they make hydrogen only no o2.

[Bob]

Humm, that could work...
a Cornish generator made from stainless if you can, or just plane o'll thick steel...
able to reach 200PSI... , a 250PSI relief valve and a valve going to the big propaine tank
... gather up your Alumimum and lye   and make your own Hydrogen to power the Water heater, cook stove and heating stove, when ya run low, fire up the furnace again and fill it up...
... I do know that they have tried to us this method in Hydrogen powered cars but have a problem regulateing how much powder to add to the water.... they use the Miner lamp method... what ever that intails.... but it generates a great deal of Hydrogen...
 Alumimum and lye should be slower reacting than a powder and there much easier to control...
a person could even purchase Aluminum punchings from a metal fabricator for a fuel source...
or save his alumimum cans ! <GRIN>
... that has potential !
the generator needant be big... at all just big enough to hold a few handfulls of alumimum and the lye to desolve it.... so it would be fairly simple to make a bolt on top to a heavy pipe, or even use a short piece of 3" galvinized pipe and endcaps sense its not going over 200PSI... .
 I wonder how long a 200gal tank of Hydrogen would last  running a furnace ?  hehehehe
 a cook stove it would last months...
even a long time for a water heater...
but a furnace would suck it down fast..as they are guzzelers !
...
Hydrogen can be used with little modification in most Propaine uses... you do need to re adjust the burn Air mixture, but other than that its almost the same ...
...
this has real potential to me !
...
Bob.......

[candyman55]

Bob,
I may give that a try, I have some xtra pressure pots in the paint shop some are steel and some are aluminum. I think that with a propane hose and a little yankee inginuity I can probably hook er up. I figure the guages are already in place, or at least the holes are there.

A miners lamp is a carbide lamp, you fill it with water and carbide and it has a reflector and striker on the front. Works pretty well (for fishing) used to use em back in day when we couldn't afford a flashlight or batterys.

[Bob]

YAH thats it Carbide ! thank you... I know they tried to use carbide to power hydrogen cars and it is one of those iffy things it has a sealed delivery system so when the carbide is dumped into the water the reaction makes the pressure needed to  pressurize the tank... this works good for a few tries untill conditions change and then the tank explodes ! ... why they didn't incorprtate a Explosive pressure reliese valve on the tank I have no idea but it Killed the inventer!
....up to that point he was driveing all around california in that car , he pulled into the parking lot at a service station and added his mix and it blew up, killing him... if there are too many more of those that stuff will be outlawed!......
...
I don't think I'll ever understand why  Inventers cannot see the WHOLE PICTURE or the dangers in their system... I alwayse look for possable outcomes is something is to go wrong.. but it seams to be a curse
if you invent it yourself get someone else to look for dangerous points about it as you can't see the forest for all the trees !
...
Bob.........

[LTCFISHER]

Just a thought, I have a jet engine lying around in the shop some where I will see if it will run on hydro.
I could run a 5hp. briggs off the tube cell. On the fuel oil furnace you will have to use a skinner valve with a voltage compatable to the fuel pump voltage for the oil injector, this way gas is only on when the oil is beging injected then turns off when not. ASCO makes them.

[hydrotinkerer]

If you mix aluminun with galium you don't need a catalyst in the water. You can use pure water and you can recover the galium and use it over and over.

[candyman55]

Well Bob, I tried the cornish generator thing today. I kinda had to modify it a little, but I used KOH and aluminum in a glass container inside a pressure pot (paint). The darned thing made a ton of gas it took only a short while to reach 80# PSI, I am assuming that it was hydrogen since that is what it is supposed to be. I connected the pot to a propane tank and opened the valve instant 60#PSI, was all I got cause my popoff is set for 80#'s. The reaction creates quite a bit of heat but it didn't create any problems. I don't know how much gas 80 to 120#'s is in an 18# propane tank but it only takes about 20 minutes with a very small reactor.

[randy]

I'm scared.

[hydrotinkerer]

I'd be more scared if it was hho. I do have a high respect for pure h2.

[candyman55]

As far as I can see so far this method of compressing H2 is about as safe as it gets. It seems that the only mechanical thing is opening and closing the valve on the propane tank. Now getting it out of the tank and using it may be another matter.

[hydrotinkerer]

I am curious as to how long the tank will last at a given mlpm. It takes less h2 only than hho.

[Bob]

KOOL thanks for your experiments Candyman !
...
how did you start the reaction in the paint pot ?
add the alum bits... add water, add KOH, sture and serve ?
...did you have enough water to cover the alum pieces ?
or did you add the metal after the KOH and water ?
...
I gott'a try that ! HAHAHAHAH
Bob....

[candyman55]

It was simple, Add KOH and water to a glass jar. ( I used a lab grade sample jar) It was only about 3" round and 7" high. Filled the jar 1/2 full of rain water and used 5 oz. KOH. Gathered up some small pieces of Alum. Plate 2X2 add 3 to each jar ( I used 2 jars) they will start reacting immediatly, sit them inside the pressure tank and clamp down the lid. Attach an air hose from the tank to the propane tank. Open the valve.

The reaction must be quite hot cause it causes the pressure tank to get hot. The jars bubbled over in the tank but the teflon coating kept it from reacting with the aluminum. If you don't bubble all of the water out of the jars the reaction continues until the aluminum is used up and all you have left is some thick gray liquid in th jar.

I am sure that a better reactor inside the tank would work better but for the first go I was quite satisfied with the results.

[wess]

Candyman: There was enough pressure to get the hydrogen in the tank? I thought you had to have alot of pressure to force it into the tank. How did you stop it from coming back into your pressure tank? A one way check valve? Did you use the gas in anything after you got it in the tank? I guess you could use a pressure cooker as long as it wasnt aluminum couldnt you? Thanks to everyone for the ideas. Keep them coming. I see I got some people thinking & thats always good for everyone...LOL.

[Bob]

Wess:
  when a reaction like that takes place it can build up hundreds of PSI thousands even... there is practly no limit to the pressure it can make... so keep that in mind, it will blow up !
... even makeing Hydroxy gas creates pressure...and allot of it I had my pressure container up to 24psi before I shut it off and it did NOT take very long to get there ...maybe 5 minutes or so.
in theory making Hydroxy gas would generate enough pressure to pressurize a tank as well
but your container needs to be able to handle it ... thats where most will find it difficult to obtain.
Candymans Idea of setting the glass beakers in the paint pot was a great way of keeping the KOH from attacking the aluminum of the pot !  and the pot can probably handle 120PSI easy.... but for testing purposes,  its best to keep pressures low !
...
the buity of this whole thing is that using a paint pot or steel container with a bolt on lid is all you really need to pressurize a propane tank with Hydrogen... although a pressure gauge is a must as well because you don't want to take a propane tank past 200psi when they are only rated for 300psi!
...and don't try to fill the quart size cans to that 200psi they will blow up ! I've refilled many a torch container and never got them full yet and never blew one up either but I've hurd of it happening !
....
I think a 4" piece of galvanized pipe 12" long with a cap on one end and Teflon taped threads and a huge washer welded to the other end(no threads) would make a good base for a Cornish generator...
another cap and a matching washer with 6 holes drilled through the washers would allow the top to be removed and an inner tube gasket would seal it good to at least 120psi I'd think...
washers in 4" id are usually at least 1/2" thick so there's plenty of metal there to weld both sides down firmly... with a bell reducer on the top washer instead of a cap you could have a valve to add the KOH and water to the aluminum after the top is bolted down good... save loosing gas that way...
your pressure gauge could be mounted on the top bell reducer or simply a T in the hose going to the propaine tank... High pressure hose would be needed, most air compressor hoses are rated to 200psi
so they should do fine, the connection to the propane tank will have to be for the propane tank itself, they are left handed threads and have a special shape to match the tank valve ...I have about 4 of them laying around the place... I've been saving them for years !
adding a pressure relief valve would be a must too I'd think so the Pipe bomb doesn't go boom !
... but that should fill many a propane tank with hydrogen...
using a regular propane pressure regulator on the tank would be a very good idea other wise you'd have a 200psi hose of hydrogen when the valve is opened.... which might be good for a blow torch but I don't think there is much call for that kind of pressure on a water heater or camp stove...
I'd be real interested to see how it burns on say a propane camp stove (pressure regulated ofcorse, most propane camp stove hookups or bar b q's have a regulator on them ...
I am not sure how it will burn, but I think it will be comparable to propane, but much cleaner,
but before you strike a match to the stove check and see what the burn rate of hydrogen as compared to propane is ... if the flame front is too fast it may well not be safe at all to do and the flame could go into the propane tank and explode ! no one wants that ! ...
I don't know if a bubbler between the stove and tank would be a smart idea or not at this stage...
as that would be difficult to arrange !...
just thinking with my fingers, don't mind me ! hehehehe
Bob......

[candyman55]

Excellent imput Bob, my pressure tank does have a guage it goes to 120# but my pressure relief lets go at 80#'s I had it poppin off yesterday. After you pressurize the paint pot to around 75#'s you just open the valve the air hose starts shakin and you can hear the propane go into the tank. the guage starts dropping and finally stops somewhere between 75 and 0#'s and then after a few minutes starts increasing again, when the guage reaches your desired poundage just shut the valve and trip the pressure relief on the tank.

I am going to use the propane regulator but I am also going to use a bubbler after that and then a cigerette filter spark arrester in line to the tip.

I got a couple of camp stoves around I guess i can sacrafice one for the cause. 

[Bob]

OOOH COOL Please do because if it works the way I think it will I will build me a Nice Cornish Generator
and fill my 25 gal propaine tank and use it from now on ! HAHAHAHAHHA
I can alwayse come up with scrap alumimum , certainly easier than the money to fill a propaine tank...
I also have a 200gal propaine tank that will hold a bunch of hydrogen !!!!!
( probly take a week to fill it and 50# of alum but what the heck ! HAHAHAHAH)
....could last me all winter !
... Please keep us informed... and yes use the cigerrett filter in the line ...
 sounds like a good move !...if a cigerrett filter will stop hydroxy gas You know it will stop Pure Hydrogen!
Bob........

[wess]

Great idea & post Bob. Be careful of using a filter as a spark arrestor tho. I saw you tube videos of cig. filter spark arrestors & some burned & some still let the flame go through. They say bronze wool is the best. That you get it at a boating supply store. Candyman be careful, I dont want someone getting injured because of my idea. But I really do think this is very possible to do. Like Bob said, use gauges & good equipment & safety first. I just am not able to experiment myself on this at this time..I'm a po-boy...but like to use my brain..wish I was rich enough to have a workshop & could just tinker with ideas all day...lol...But I will experiment as time & $ allows..Again, good job guys....

[numberonekiwi]

This may be the solution not sure how much hydrogen would be required over standard propane could it be injected into your standard fuel injectors or would you need a fuel propane conversion to run
How much Aluminuim and KOH mix would you need to get say 100 Litres @ 100 or 200 PSI

[geezer]

just a thought... most welding supply stores sell hydrogen flashback arresters that go in line in the hose takes a few lbs. press. to open. in a pressureised system shouldnt be a problem.

[Bob]

Thanks Geezer ! I didn't know they did ! its worth a look-see at their cost and availability !
...
I'm thinking for Household use mostly because the propaine carberator part are so darn hard to get yet alone any varity among them.... but  propaine powered car might be converted to pure hydrogen very easily....
 but remember if you do this you have the same danger that the guy who used Carbide and water to power his car...it worked fine for years and one day the tank simply blew up killing him...
he had safty devices all over it but it did no good !... evedently the pressure releaf valve ( only one) was stuck closed......
if you do something have like 6 pressure relief valves on a large tank !
 I can picture my truck driveing down the road with a 200 gal propaine tank in the back filled with hydrogen... a cornish generator in the cornor ..... it could work and work good... but I am sure the public outcry will get laws passed that say you can't do it because its dangerous to man and beast...
...
Bob.......

[Bob]

As far as I know, pure Hydrogen is about as flamable as Accetiline, propaine and natural gas
its not by its self super volitale, untill it is mixed good with air or oxygen.
once mixed of corse it becomes very volitale. and explodes just like any other gas when properly mixed
...
so I am thinking a camp stove is a perfect test bed for Hydrogen. with a propaine camp stove usually you have air adjusters so you can adjust the flame from orange to bright blue.... getting the proper burn.
these adjusters may be all that is needed to adjust hydrogen to a proper burn as well...
I have no idea what color the flame will be or even if it will show up , it might be invisable like a good alchol flame...
 but here's the thing , if the Cornish generator and propaine tank idea work to power a camp stove
then its obvious that it will power the gas stove in your house, you may need to use natural gas jets in the appliances , which are bigger than propaine or you may have to go smaller than propaine jets....
its hard to say at this point !
.... the reason this is Much much safer than the Carbide and water method is because its SLOWER
when you put 5 oz of powered carbide into water you get an imediate expansion of the carbide when it reacts to the water and turns into hydrogen.... an almost explosive reaction... infact you can hear the reaction in such a tank it sounds like a muffeled "whump" and you have high pressure just that fast...
that is why hydrogen powered cars got their bad RAP early on... it was the method of getting the hydrogen in the first place.... not that it didn't work, it was dangerous as Hell !
...
our method here is slower and more controled... you could sit there and watch the pressure climb...
and not say "OH NO I put too much alumimum in it its going to explode !" ... if the cornish generator  is still making gas  you can simply vent it... just don't make a spark or be smokeing at the time.<GRIN>
....
 this is far more useable than the carbide method, however I suppose if you used powered alumimum you would get the same super fast reaction takeing place , so alumimum punchings would be the best thing so their solid pieces, or scrap alum.
the question is will hydrogen burn in a stove or gas furnace with just minor adjustments ?
if so we realy do have something here !
... I don't know for a fact that it will, but I think it will, experimentation will have to prove my GUESS I guess ! HAHAHAHAHAHHAHA
...
if some of you guys are the book worm type and like to lookup things like that you might look up the properties of Propaine gas and compaire them to Hydrogen gas.... should be realy interesting to see !
...
Bob.......

[LTCFISHER]

A good trick to get a little more hydro in your tank is to pull a vacuum on the tank first.
I think I would dig a pitt to place the tank in during refilling, just encase,
 you use a diaphram compressor to boost the psi..

[candyman55]

I think that you are right about the vaccume, I also have an explosion resistant room with 18" Concrete walls and 10" concrete ceiling all underground except the roof. I think that I need a bigger reactor with more capacity. I think that with the right pressure relief I can fill the tank right out of the generator.

[Bob]

A concrete culvert pipe sunk vertically in the ground would help shape the charge UP I bet if the tank let go.... but I don't plan on pushing anymore than a Max of 120psi myself so I don't think there is any worry about a propane tank letting go at that pressure.
....
 Hay Fisher... does the LTC mean Your a Lutenet Colonel if so in what branch  of the service ?... just courious !
...
 I also have another question for you ... I was thinking of makeing a 30,40 or 50 Wall plate cell by keeping them all in line and stacked neetly  with alternateing polarity in the normal Parallel fashon....you know with the top threaded rod being pos and the bottom being negative exiting on opposite ends of the tank.....
 what do you think of that idea ?   You obviously could have done it that way and chose not to.... how come ? am I missing something here ?

thanks...
Bob.......


 

[LTCFISHER]

Part 1:

LTC/ Lieutenant Commander, United States Navy.

Part 2: I will look at my test notes and let you know something in the morning,
           as to that number of plates in a cell. One thing it will take alot of amps.
           30 plate cell in plain water draws 20 amps. Current unit running in my
           truck.

[Bob]

WOW in plane water it draws 20 amps ! COOL !...
I noticed your plate spaceing is quite wide too...
I was going to shoot for 1/16" spaceing and try 50 plates in a row and try to hit them with 80 or more amps... this will be a BIG cell... and its output should realy be high ...but there is no sense in building it without a bigger altenator !  My current 65amp alt would not even warm it up HAHAHHA
...
50 wallswitch plate covers would equil 618.75 sqr.in.
to run them with the same amps per sqr inch as a Randy cell it would take 224.99 amps
30  covers is much more reasonable at 317.25 sqr in.
and would take 134.99 amps for the same sinerio
the 30 plates would put out 13.49LPM
and the 50= 22.49 LPM
but the amp load is so high with the 50 plates that I think it almost unreasonable
...
but I am seriously thinking that the SS Wallswitch plate covers are the way to go...
40 plates would equil 495 sqr.in.
needed amps would be 179.99 amps
output would be 18LPM
heat would be astrinomical ! HAHAHAHHAHA
so if I made a 40 plate cell fed it with 140 to 150 amps from a 200amp altenator
I should get 15LPM at a guess...
...
I think I could mount that stack in a 4" ABS pipe too and have a 4" ABS next to it as a recurculateing tank....
...
hummm its got possabilities !
...
Bob......

[timberwolf]

2008 old topic I was wondering if anyone ever had any luck with this as far as running a stove or furnace.

[Bob]

As of this date I don't know anyone who has even tried. Yet alone found a way to generate the Needed Volume a furnace would need.
 Large volumes of HHO are hard to come by...5LPM and below is fairly common, but to run a House Furnace
you'd need a very large amount of LPM...
  I'm guessing here,because I have only played with a HHO torch, it needed at least 2 LPM to burn a 1" flame.... 20 of those 1" flames would cost you 40LPM giving all things stayed the same.
and only 20 of those flames would be more like a Small cook top not a house furnace.... that would take more like 120 of those 1" flames ! that's 240LPM !.... now depending on how you generate that 240LPM... with inverters or old welders, the fact is its going to take a Huge amount of amperage to produce that much gas!  At the best of sinerios a 10:1 ratio can be obtained.... 10 amps per 1 LPM...(which drops off drastically as larger amounts of HHO are generated. so at least a 25% increase in amperage is needed just to break the 240LPM mark but disregard that point for now...)
if it could be achieved at that ratio you'd need 2400AMPS to run your generator to power your furnace
...
 Its Just not practical unless you have an unlimited amount of Power being generated, and if you have an unlimited amount of power being generated its far easier and Much more Reliable to use electric heaters ! ...
that power can come from Solar panels or wind generators or a combination of the two.
and if you have that already your power Needs are far less than the average persons and a solar Still or Hot box can provide all the HEAT you need to stay warm !
... Some things are practical...some things really aren't . I think Heating your Home with Hydroxy Gas is one of the things that just isn't practical ...YET !
...
Bob.....

[timberwolf]

Morning Bob and happy new years. I was talking about the Cornish Generator and propane thank idea it sounds like it should work for a small stove just wondered if anyone had any luck in doing so. If so how many PSI did they put in tank, what size tank, what did they try to run and how long did it last?

[Bob]

Howdy Timberwolf !
And happy New Years to you and yours !
...
Well, lets see...
a typical 20gal propane tank(100lb'er) is tested to 300psi that is for Propane however
if you put 300psi of air in it it will more than likely explode on you...as air compresses a great deal
and in doing so it stores a considerable amount of power.
at the very highest I'd only go to 150psi if it were me.
I have had a propane tank as a supplemental air tank for my air compressor charged up to 100psi but I admit I was getting nervous  !<grin> but it held that pressure with no complaints...hehhehe
...
I have not experimented with a Cornish generator as of yet... though I am still looking for a paint pressure pot NOT made of Aluminum!  and have yet to find one !
... As you know, you can generate Hydrogen gas (with other gasses mixed in with it, that are quite lethal)by simply pouring a strong mixture of KOH on to aluminum scraps.... the electrolyte will dissolve the aluminum and in doing so it puts of a copious amount of hydrogen gas...
I believe KOH will do this but it may take Hydrochloric Acid.... I'm not sure about that!
so you see the need of your Pressure pot Not being made out of aluminum ! cast iron or steel would suffice just fine even better if you could find one in stainless steel !
... Charging the propane tank with 150lb of Hydroxy gas would be Dangerous to put it mildly....even more so than charging a 300psi tank of propane... because propane is much less volitial
yet a small tank of it can level a 3 story building ! think of what a 20gal tank charged to 150psi of Hydroxy gas could do..... the question becomes one of "a crater of course, but how big of one!"
 ...
Anyway, a 5 gal propane tank pressurized up to 150psi with Hydroxy gas , ran through at least 2 blubbers as a safety precaution could fire a large flame for some time ! how long is anyone's guess
because that depends on the size of the orface emitting the gas to make the flame...
I would venture out on a limb and guess at about 2hrs for a really hot fire or as much as 12 hrs for a small fire.
 My GUESS may well be way off the mark because I have no Idea really ! I am groping in the dark here!
....
you can use an old refrigerator compressor to suck up the hydroxy gas and compress it into a tank
it will take a long time to do that and may indeed be dangerous to do it I dunno !
I got a 20gal propane tank up to 120psi with an old refrigerator compressor once....left it on and it blew the plastic line at 120psi... I went running out to un plug it when I heard the Hisssss! forgot it was on ! .... OOOOPS !  it ran my air tools for about 2 minutes !  that's when I decided I needed a air compressor!
 so as you can see 120~150psi isn't Much in a 20 gal tank... but its how much you use of the stored component that matters..... my air grinder really sucks the CFM  ! LOL !
...
Bob......

[Manta]

Bob,

...a typical 20gal propane tank(100lb'er) is tested to 300psi that is for Propane however
if you put 300psi of air in it it will more than likely explode on you...as air compresses a great deal
and in doing so it stores a considerable amount of power....

Never been able to follow your logic on that one.

The pressure is a function of the gas pressing on the container walls. So it won't matter what kind of gas it is. Propane,  air hydrogen.  You name it.

The volume of gas that it takes to exert this pressure will change depending upon how well the gas compresses.  But the 'push' that is measured on the guage is the same for all.

Dave
(Manta)

[Bob]

Your Probably correct as usual Manta... I was told that although the propane tanks are pressurized to 300psi that 150psi of air was the Max safe pressure.... this may be wrong I dunno.
300pounds of feathers is the same as 300pounds of lead... as you say... just the volume is different is all
...
 be that as it may... the storage capacity of a propane tank would be greatly increased if you pressurized it to 300psi instead of 150psi..... obviously doubling it...
I don't know how many cubic feet can be stored in a 20 gal propane tank under the various pressures described but probably not enough to run a furnace for very long....
we hooked up a 20gal propane tank to the house furnace one time, with a full tank it lasted about 8hrs running on high...( trailer house furnace on a very cold day!)
the next day Dad and I got the wood stove hooked up pronto !  HAHAHA used the chainsaw in the atic to cut a hole in the roof !  we had to get the stove pipe through fast ! HAHAHAHAHH
...
Bob...