cold gas
Thread Starter
|
Senior User
Joined: Sep 2004
Posts: 248
Likes: 0
cold gas
Does anyone know what's the easiest way to get a source of cold gas?
I'm thinking liquid nitrogen. CO2 is out of the question since it's toxic to humans in high concentrations.
The gas needs has to be able to be stored. And not hazardous if inhaled. And when needed, cold gas can come out of a nozzle.
What's the best way to achieve this? Thanks
I'm thinking liquid nitrogen. CO2 is out of the question since it's toxic to humans in high concentrations.
The gas needs has to be able to be stored. And not hazardous if inhaled. And when needed, cold gas can come out of a nozzle.
What's the best way to achieve this? Thanks
Last edited by unclehan; May 4, 2006 at 10:06 AM.
Postmaster
Joined: Mar 2001
Posts: 4,968
Likes: 3
From: So Cal
Nitrogen is also lethal to humans in high concentrations. Essentially with Nitrogen or CO2, you drwon since there is no Oxygen to breathe.
Properly handled both gases are safe.
How cold are you talking?
Most places needing cold gas use Nitrogen since it is easier to transport since it is in bottles as a liquid. CO2 is also transportable in bottles( I think as a gas) or as a solid, dry ice. CO2 in bottles takes up a lot of space Liquid Nitrogen doesn't.
There are commercial Nitrogen kits available, but they are expensive.
Either gas can be had thru commercial suppliers but unless your quantity is decent, they may not want to talk to you. Air Liquide is one comapny I know of but they deliver tanker fulls. I think they are in the yellow pages under bottled gas.
Good Luck,
Jim Henderson
Properly handled both gases are safe.
How cold are you talking?
Most places needing cold gas use Nitrogen since it is easier to transport since it is in bottles as a liquid. CO2 is also transportable in bottles( I think as a gas) or as a solid, dry ice. CO2 in bottles takes up a lot of space Liquid Nitrogen doesn't.
There are commercial Nitrogen kits available, but they are expensive.
Either gas can be had thru commercial suppliers but unless your quantity is decent, they may not want to talk to you. Air Liquide is one comapny I know of but they deliver tanker fulls. I think they are in the yellow pages under bottled gas.
Good Luck,
Jim Henderson
Thread Starter
|
Senior User
Joined: Sep 2004
Posts: 248
Likes: 0
Can liquid nitrogen be stored for a long time in a small tank? (leakage) Does it have to be refrigerated?
It doesn't have to be too cold, around 0 F is fine. Liquid nitrogen is actually too cold for my application and I actually need to find a way to "warm" it up first before using.
A need a temperature like the air outside on a cold winter day.
Can mere compressed air work?
It doesn't have to be too cold, around 0 F is fine. Liquid nitrogen is actually too cold for my application and I actually need to find a way to "warm" it up first before using.
A need a temperature like the air outside on a cold winter day.
Can mere compressed air work?
Last edited by unclehan; May 4, 2006 at 11:54 AM.
Postmaster
Joined: Jul 2003
Posts: 2,628
Likes: 0
From: Calgary, Canada
Cold gas? fart on an ice cube. 
What quantity are you needing? Tanker full, 50 lbs, 1 lb? Compressed air dusters will expel a liquid that will evaporate rapidly enough to freeze whatever it is sprayed on... if you hold them upside down while spraying. The gas itself isn't cold, unless it's been refridgerated; it's the expansion of the gas that cools, or in the case of a liquid, the rapid evaporation of the liquid that draws heat away. Any gas that displaces breathable air is dangerous.
What quantity are you needing? Tanker full, 50 lbs, 1 lb? Compressed air dusters will expel a liquid that will evaporate rapidly enough to freeze whatever it is sprayed on... if you hold them upside down while spraying. The gas itself isn't cold, unless it's been refridgerated; it's the expansion of the gas that cools, or in the case of a liquid, the rapid evaporation of the liquid that draws heat away. Any gas that displaces breathable air is dangerous.
Post Fiend
Joined: Feb 2003
Posts: 6,940
Likes: 2
From: Eastern WA
What you are trying to do with it would help us determine how to reply. For example, are you eventually discharging it to the atmosphere or reusing it.
Trending Topics
Elder User
Joined: May 2003
Posts: 575
Likes: 0
From: Orlando, FL
I was at a club last weekend that just used CO2 bottles filled with compressed atmospheric air to blow confetii and stuff into the air. The rapid expansion of the air may be enough to cool what you want.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Posting Guru
Joined: Dec 2004
Posts: 1,159
Likes: 0
From: Connecticut
I like Mil1ions Idea of LP gas, is good around smokers.
I will secong the question: What is the application for?
You can make any gas cold. Air is non toxic. If you want work involved there's a project you can do. Wrap an air compressor in copper roll tubing and braze the ends to a good working air condtioning unit's coolant connections eliminating the coil then recharge the system. and if that is not cold enough add a clamp over pin valve on air output side connect a 1/4 inch copper line to a water source and that will drop the temp even more. It is like taking a can of compressed air and turning it upside down and spraying it.
I will secong the question: What is the application for?
You can make any gas cold. Air is non toxic. If you want work involved there's a project you can do. Wrap an air compressor in copper roll tubing and braze the ends to a good working air condtioning unit's coolant connections eliminating the coil then recharge the system. and if that is not cold enough add a clamp over pin valve on air output side connect a 1/4 inch copper line to a water source and that will drop the temp even more. It is like taking a can of compressed air and turning it upside down and spraying it.
Lead Driver
Joined: Jun 2005
Posts: 8,472
Likes: 727
From: Calgary Canada
I'm voting for Nitrogen for safety reasons. But since we still don't know what you are using it for, all this advice is pretty much useless.
Oh, to answer your questions about storing it in small bottles, Nitrogen, CO2, Helium, propane, etc should be fine as long as you are using the right bottles. You should be able to store them for years with no noticable pressure loss.
Oh, to answer your questions about storing it in small bottles, Nitrogen, CO2, Helium, propane, etc should be fine as long as you are using the right bottles. You should be able to store them for years with no noticable pressure loss.
Thread
Thread Starter
Forum
Replies
Last Post
Avanti
General NON-Automotive Conversation
3
Mar 25, 2008 08:31 PM