Quick Drying - The Other Side Of The Coin

[fdd2blk]

i used to work with liquid nitrogen. i would spend all day filling doers. if you had a leak in one and didn't know it and it was in an enclosed room and you walk in, you can die before you know it.

 

[Seamaiden]

It also displaces oxygen seamaiden,so you can suffocate if you have a room full of the co2.Alot of fire fighters die every year because of this.

It displaces regular air, too. Do you remember Lake Nyos, in Africa? Lemme find us a link here. This shit blew me away, especially seeing the dead foliage in the CO2 sinks.

Lake Nyos: plan for degassing lakes Nyos and Monoun, Cameroon. Gas disaster at Nyos: mitigation of a natural hazard at Nyos.
Savage Planet: Volcanic Killers-Degassing Lake Nyos

Yeah, don't bend over.

 

[Al B. Fuct]

Ok, the vapor that comes off of dry ice is CO2. This is why it falls, as CO2 is definitely heavier than air. I suspected as much, but didn't want to make a definitive statement.

Well, that much we knew, but CO2 fog, being very cold, appears to cause some condensation of atmospheric humidity. CO2 fog thus seems to wet anything it touches. We were on the topic of the water holding capacity of N vs something else and it simply occurred to me that the last time I used CO2 fog as a theatrical effect, the floors and objects on it collected some of this condensed moisture. Seems to me that the white, visible element of a CO2 fog is actually water vapour as CO2 is itself odourless and colourless.

It also displaces oxygen seamaiden,so you can suffocate if you have a room full of the co2.Alot of fire fighters die every year because of this.

Humans can tolerate 30,000ppm for 15 mins without a respirator. Firefighters usually have a breathing apparatus when on the fireground, so I would be very interested to see actuarial data on firefighter deaths from a CO2 atmosphere.

i used to work with liquid nitrogen. i would spend all day filling doers.

That'd be 'Dewars'

if you had a leak in one and didn't know it and it was in an enclosed room and you walk in, you can die before you know it.

Sure, I can see that kind of hazard with any odourless, colourless gas in a confined space.

(CO2) displaces regular air, too.

Of course it can.

However, to round this up back on topic (ha!) the nitrogen dryer I proposed a cpl pages back would be a sealed box of ~30-40L or so in volume- I was not suggesting filling a room with N or CO2!

 

[fdd2blk]

do her? i hardly even know her. lol

 

[Al B. Fuct]

humour!! ark ark ark

 

[Seamaiden]

My friend thinks that the water vapor "locked" onto the CO2 vapor would be negligible. But, he mentioned what you did, the... oh jeez, what did he call it? Interface I think, he said that any water held in the air would be brought out via condensation due to the cold. I don't think I'm explaining it well, but I also think that you're already ahead of me on the chemistry/physical reactions involved.

 

[fdd2blk]

Freeze drying - Wikipedia, the free encyclopedia

freeze dryers

freeze drying at home

 

[Seamaiden]

Ok, I can say "cryodessication", but the other word gets me tongue-tied, lyophilization. You're puttin' ideas into my head now. You and Al.

Hey! I practiced and now I can say it.

 

[Seamaiden]

Hey! Your third link explains the shrinking ice cubes in a frost-free freezer, yes? Or am I misunderstanding how it works?

 

[Al B. Fuct]

My friend thinks that the water vapor "locked" onto the CO2 vapor would be negligible. But, he mentioned what you did, the... oh jeez, what did he call it? Interface I think, he said that any water held in the air would be brought out via condensation due to the cold.

Well, all we need is some sort of gaseous medium that will shift the water molecules off the buds. Air manages it and it is 70-odd % N.

Freeze drying - Wikipedia, the free encyclopedia

freeze dryers

freeze drying at home

Thanks for the linkage mon. I think freeze drying might be hard to control, but it's definitely worth some consideration.

Ok, I can say "cryodessication", but the other word gets me tongue-tied, lyophilization.

cc..cryo...c..ccc. oh, fuck.

Hey! Your third link explains the shrinking ice cubes in a frost-free freezer, yes? Or am I misunderstanding how it works?

Yep, water sublimes!

 

[fdd2blk]

i've never evn thought of freeze drying. using dry ice maybe? or liquid nitrogen. just dip it and be done with it.

 

[Seamaiden]

Wouldn't liquid N make it super crumbly, though? I'm thinking of how efficient our new LG fridge is, and I can set the freezer to.. jeez, I think something like -24F. That's some cold (I keep it at 7F, that's plenty cold enough for home).

 

[Seamaiden]

Cryodessication--CRY-oh-DES-i-KAY-shun. The other one has a lot of "L's".

 

[fdd2blk]

Wouldn't liquid N make it super crumbly, though? I'm thinking of how efficient our new LG fridge is, and I can set the freezer to.. jeez, I think something like -24F. That's some cold (I keep it at 7F, that's plenty cold enough for home).

get on it.

 

[Al B. Fuct]

I'd be worried about freezing wet buds, to be true. Water expands when frozen, breaking the cell walls, which is what causes leaf veg to go floppy when frozen.

 

[Seamaiden]

That's a very good point, Al. With freeze-drying (I'm still reading fdd's Wiki, and yours), doesn't it happen fast enough that the water doesn't expand so much to cause that effect? The LG has a quick freeze feature, but I haven't used it yet. I'm a big fan of IQF chicken and other foods for quick dinners, but again, that probably requires one of those machines. I can't even find a price on them, you have to email for a quote. That tells me, "If you gotta ask, ya can't afford it."

get on it.

D'OH! I am in need of mature buds. None of the girls is ready just yet, nor is Time Out Tranny. I did take some pix, but to me they're extremely unimpressive.

Send me a fresh bud and I'll be more than happy to throw it in my freezer. Everyone tells you that, don't they? Oh, hey, fdd! Need any help smokin' that up? Yeah. Of course you don't.

You ever fix that bong?

 

[fdd2blk]

I'd be worried about freezing wet buds, to be true. Water expands when frozen, breaking the cell walls, which is what causes leaf veg to go floppy when frozen.

all your trichs would burst and melt together. when it was all done it would be glazed. maybe?

 

[Al B. Fuct]

I'm not sure there's enough water in the resin trichs to cause that effect, but I am fairly confident that a wet bud that was frozen then thawed would come out a floppy mess, like frozen then thawed spinach.

 

[GoodFriend]

I'm not sure there's enough water in the resin trichs to cause that effect, but I am fairly confident that a wet bud that was frozen then thawed would come out a floppy mess, like frozen then thawed spinach.

... you have a freezer don't you?

you have fresh bud every 2 weeks...

in fact i bet you have some thats not dry now

pop it in the ice box... let us know in a few days

 

[Al B. Fuct]

I'm not sure how the process of freeze drying actually works, but I'm confident there's more to it than chucking something in a freezer. The moisture's got to go somewhere and there's not a lot of air volume in a typical home freezer to take it away and keep it away from the item you're freeze-drying.