Acetic Acid
Hazard to Self
Posts: 95
Registered: 14-8-2011
Member Is Offline
Mood: No Mood
|
|
I just had a weird thought
There should be a machine that generates heat based on the addition of sulfuric acid to water. 
|
|
|
Arthur Dent
International Hazard
Posts: 546
Registered: 22-10-2010
Member Is Offline
Mood: entropic
|
|
Interesting idea, but the byproduct of this reaction would be massive quantities of diluted sulphuric acid... not the friendliest of emission! 
Robert
--- Art is making something out of nothing and selling it. - Frank Zappa ---
|
|
|
Acetic Acid
Hazard to Self
Posts: 95
Registered: 14-8-2011
Member Is Offline
Mood: No Mood
|
|
Hmm... Maybe it could be subsequently neutralized in Na-OH to generate even more heat?
|
|
|
drago57
Harmless
Posts: 16
Registered: 13-8-2011
Member Is Offline
Mood: No Mood
|
|
Making one from adding water to anhydrous CuSO4 would be better, you could easily regenerate your heat source
|
|
|
Acetic Acid
Hazard to Self
Posts: 95
Registered: 14-8-2011
Member Is Offline
Mood: No Mood
|
|
Oh I get it, because hydrating that is an exothermic process, the heat produced might boil the water if you use enough. However, I always wondered
what happens if you don't follow safety rules and add water to acid.
|
|
|
drago57
Harmless
Posts: 16
Registered: 13-8-2011
Member Is Offline
Mood: No Mood
|
|
Plenty of heat from the hydration of CuSO4, I think that's how some of those instant self heating food packs work (though not completely sure on that
one)
From experience rinsing out flasks that've had conc. acid in them, I wouldn't fancy trying it on more than a few mL
|
|
|
Bot0nist
International Hazard
Posts: 1559
Registered: 15-2-2011
Location: Right behind you.
Member Is Offline
Mood: Streching my cotyledons.
|
|
@Acetic Acid
The drop of water you add will instantly boil and splash acid all over. Not fun.
[Edited on 4-9-2011 by Bot0nist]
U.T.F.S.E. and learn the joys of autodidacticism!
Don't judge each day only by the harvest you reap, but also by the seeds you sow.
|
|
|
Megamarko94
Hazard to Self
Posts: 68
Registered: 31-12-2010
Member Is Offline
Mood: No Mood
|
|
how about adding CaO to water
|
|
|
drago57
Harmless
Posts: 16
Registered: 13-8-2011
Member Is Offline
Mood: No Mood
|
|
CaO would work, I've seen several gallons of water be boiled almost instantly by adding relatively small amounts of CaO. You'd have a load of Ca(OH)2
to get rid of afterwards though
|
|
|
White Yeti
International Hazard
Posts: 816
Registered: 20-7-2011
Location: Asperger's spectrum
Member Is Offline
Mood: delocalized
|
|
How about aluminium burned in the presence of sulphur? This reaction gives off tremendous amounts of heat. Once it cools down, you can add it to water
and it will give off H2S, which is flammable. Burn the H2S and use the heat to heat some vanadium pentoxide catalyst and pass the sulfur dioxide mixed
with oxygen over it then pass the sulphur trioxide into some water and this will generate even more heat and so on...
Kind of like a rube goldberg machine
|
|
|
plante1999
International Hazard
Posts: 1937
Registered: 27-12-2010
Member Is Offline
Mood: Mad as a hatter
|
|
Aluminium cannot be used asa fuel , It require an extrem amount of electricity to extract it. I think Ammonnia is the best fuel we can have at this
time.
I never asked for this.
|
|
|
White Yeti
International Hazard
Posts: 816
Registered: 20-7-2011
Location: Asperger's spectrum
Member Is Offline
Mood: delocalized
|
|
Ammonia also uses a lot of energy during production. Ammonia synthesis uses up about 1% of the all the energy generated worldwide. I never said that
aluminium should be used as fuel. It's foolish to use aluminium, ammonia and sulfuric acid to generate heat.
|
|
|
plante1999
International Hazard
Posts: 1937
Registered: 27-12-2010
Member Is Offline
Mood: Mad as a hatter
|
|
Ammonia could be produced from waste animal matter (piss) , urine contain urea , chloride and sulfate one can evaporate water from urine and get urea
and the other constituan of urine , When heated urea decompose to cyanuric acid and ammonia , cyanuric acid could be transformed in melamine , witch
can be converted to melamin resin (A polymer).
So ammonia could be produced ''not cheaply''.
[Edited on 4-9-2011 by plante1999]
I never asked for this.
|
|
|
White Yeti
International Hazard
Posts: 816
Registered: 20-7-2011
Location: Asperger's spectrum
Member Is Offline
Mood: delocalized
|
|
That last word ruined it all. Collecting cow piss is definately not cheaper than making ammonia from nitrogen and hydrogen in an ammonia plant. Think
of logistics involved in collecting, transporting and purifying urea from piss. Besides, I thought I heard you say:
What's the point of using ammonia for heating if you need to heat urea in order to make it? That's a pointless thing to do, even if the energy
expended is lower than the energy released by the burning of ammonia.
For heating on a large scale, I would rather use a good old nuclear reactor. Nothing beats fission power, except nuclear fusion.
|
|
|
plante1999
International Hazard
Posts: 1937
Registered: 27-12-2010
Member Is Offline
Mood: Mad as a hatter
|
|
We could use bactery to change the conssentred piss in ammonia in place of heating.
I never asked for this.
|
|
|
White Yeti
International Hazard
Posts: 816
Registered: 20-7-2011
Location: Asperger's spectrum
Member Is Offline
Mood: delocalized
|
|
Or just get a small nuclear reactor and heat an entire city with it.
|
|
|
Acetic Acid
Hazard to Self
Posts: 95
Registered: 14-8-2011
Member Is Offline
Mood: No Mood
|
|
When we can harness antimatter that will be even more effective than fusion.
|
|
|
Arthur Dent
International Hazard
Posts: 546
Registered: 22-10-2010
Member Is Offline
Mood: entropic
|
|
Oh we can... we can...
Robert
--- Art is making something out of nothing and selling it. - Frank Zappa ---
|
|
|
Acetic Acid
Hazard to Self
Posts: 95
Registered: 14-8-2011
Member Is Offline
Mood: No Mood
|
|
:-O
|
|
|
Acetic Acid
Hazard to Self
Posts: 95
Registered: 14-8-2011
Member Is Offline
Mood: No Mood
|
|
:-O
|
|
|
White Yeti
International Hazard
Posts: 816
Registered: 20-7-2011
Location: Asperger's spectrum
Member Is Offline
Mood: delocalized
|
|
You would have to manage the high energy gamma rays that are involved with anihilation. Stepping down the energy to infrared levels is easier said
than done....
|
|
|
ScienceHideout
National Hazard
Posts: 391
Registered: 12-3-2011
Location: In the Source
Member Is Offline
Mood: High Spin
|
|
Seems a little expensive for just a small amount of heat...
hey, if you are reading this, I can't U2U, but you are always welcome to send me an email!
|
|
|
White Yeti
International Hazard
Posts: 816
Registered: 20-7-2011
Location: Asperger's spectrum
Member Is Offline
Mood: delocalized
|
|
That's why I like fission better than particle- antiparticle anihilation
|
|
|
IrC
International Hazard
Posts: 2710
Registered: 7-3-2005
Location: Eureka
Member Is Offline
Mood: Discovering
|
|
Interesting until you get a ticket for going 88 miles an hour. And then they bring in H.S. for your Mr Fusion.
"Science is the belief in the ignorance of the experts" Richard Feynman
|
|
|
AndersHoveland
Hazard to Other Members, due to repeated speculation and posting of untested highly dangerous procedures!
Posts: 1986
Registered: 2-3-2011
Member Is Offline
Mood: No Mood
|
|
Finely powdered CaO with SO3 would generate a tremendous quantity of heat.
Think about it; each of the two constituents alone with water can generate enough heat to start a fire. Even after both reactants have been
hydrated, forming Ca(OH)2 and H2SO4, respectively, mixing the two would still result in an extremely violent reaction, instantanously boiling out the
water as it forms.
[Edited on 8-9-2011 by AndersHoveland]
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
