Why does dust cleaner get cold

Or fluorocarbon? Or similar. Don't get hung up on my terminology, I'm only an entry-level physics student. Add a comment. Active Oldest Votes. Improve this answer. Colin K Colin K 6, 1 1 gold badge 26 26 silver badges 40 40 bronze badges. The liquid has to have a vapor pressure greater than one atmosphere, ie have a boiling point below ambient. I can't seem to find too much technical info about them online.

This means that its boiling point is whatever the ambient temperature is, and the pressure in the can varies to ensure that such a relationship continues to hold. Note that when you start spraying the fluorocarbon, the pressure in the can drops, some of the liquid boils as a result, and the contents of the can cool off until enough heat can be transferred back into the can to warm it back up to ambient temperature. Featured on Meta. Now live: A fully responsive profile.

Related 8. Hot Network Questions. Question feed. The material is highly filtered and controls are implemented to avoid moisture and other contamination. Additives to prevent huffing — Many retail dusters have bitterant added to prevent huffing.

To avoid this, bitterant is added to make the duster taste bad. This same bitterant can lead to unwanted and potentially harmful residues on sensitive surfaces like electronic circuit boards. Check fill weight — Retail duster can come in a variety of fill weights the content of the material in a can including 3. This metric can only be accurately judged by the label since the size of the spray can may not vary.

Duster Doesn't Hurt The Ozone Layer There is a misconception based on old information that dusters hurt the ozone layer. High spray force — Each type of Techspray has the potential to produce a certain amount of force. Techspray offers duster products with even higher spray force by controlling output through both the valving and the sprayer. Under high pressure, the propellant is mostly liquid, with the empty part of the can filled with vapor.

When you spray an aerosol duster, the vapors of the propellant are expelled. As a side note, this also explains why it is a bad idea to shake up a can of duster before use, as is the habit of using spray paint. If you shake the duster, the liquid propellant is more likely to sputter out as you start spraying. These components allow you to reuse the sprayer and purchase refill cans.

The advantage of the chrome sprayer is more precise control over spray force and ESD electrostatic discharge control. The standard plastic sprayer has the potential to build up a static charge as you spray. The chrome trigger is conductive, so it will not build up a charge, and it has the potential to be grounded.

Shop air — In an industrial setting, dropping an airline is very common. In this case, a compressor constantly keeps the line pressurized with air. Some of the more common dangers include:. Simple steps in the workplace can help keep workers safe from these dangers associated with canned air products.

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We use cookies to provide you with a better experience. By continuing to browse the site you are agreeing to our use of cookies in accordance with our Privacy Policy. Home » The dangers of canned air. Asphyxiation Canned air Fire safety Frostbite. Some of the more common dangers include: Flammable ingredients. When canned gas is tilted, the liquefied and highly flammable gas can be released into the air and onto surfaces it contacts.