More or less scientific experiments with vapor.

[The Torch]

Not sure this is the right place for this, but here goes:

Now that we have portable vapor production units, we can all make our own little experiments whether they be based on some science or not. I'd like to hear what others can come up with.

Here are some examples:

- I was wondering how much warm air gets pulled into the refrigerator when I open the door, so I exhaled a small cloud without blowing it out right in front of the fridge door and opened it. Amazing! I guesstimate it should be more economical to leave the door open for 5 minutes! You gotta try this for yourself; I guarantee it will change how you think about opening the refrigerator door.

- The other day I couldn't tell if my computer's power supply fan was working... vape to the rescue and it works just great!

- Sometimes it's hot inside but too cold outside to justify using the AC, so I put one fan to pull in air at one end of the apartments and one at the other end to push it out. The thing is the wind can blow either way depending on wind direction (north/south facing windows). I used to check the slow wind direction with smoke, but vape is cheaper and I don't have to light one up just to check and don't need to blow ashes all over the place while I setup the fans.

Any other cool ideas out there??

 

[Recycled Roadkill]

About leaving the fridge door open: The warm air that enters cools fairly quickly. It's the mass inside that takes longer to cool. Every bit of warm air that enters must be paid for to cool back down. Probably not much in dollars and cents but still, it's money wasted when the door is left open.

Back in the day, when I did air conditioning for a living, I'd use smoke from a cigarette to identify air leakage around door seals and with heat exchangers to identify CO leaks from the combustion area in to the airstream. If I were still doing that work, vapor could be used for that too.

Great ideas!

 

[Bernard Marx]

I remember when they banned smoking on airplanes the maintenance people complained that they couldn't see the blackened cracks in the fuselage.