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49 questions
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2 answers
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I am trying to figure out how would I be able to determine the pressure differential that will be sustained if I removed a certain amount of volume of air with a fan? This is a rather extreme and ...
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1 vote
3 answers
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Last night, I ran a domestic dehumidifier in a bedroom in my house overnight for about 14 hours. In the morning it had collected 1.6 litres of water in the tank. The bedroom door was closed throughout,...
teeeeee's user avatar
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I currently have a 24" chimney fan rated at about 10000 CFM blowing through a 24" tube. If I were to make a cone so that I could install a 32" fan to blow through the same 24" tube,...
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I was given a problem where a man crouching on a diving board, he tilts forward until he tips off the board and rolls mid-air till he hits the water My question is not about the problem, I can solve ...
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I am setting up a test-bed for an experiment. Here's what I have. A circular car exhaust The gas comes out of the exhaust at a velocity, x. We need to lower the gas velocity to x/3 Conditions The '...
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I am working on something, for that i need to calculate total annual quantities of CO, particulate matter, NOx and SOx for stationary sources. meters are not installed on emission sources. Can anyone ...
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I have designed the baghouse filter but I don't know what device should I install in combination with the baghouse such that it filters the toxic gases too. I saw a lot of technologies but the cost is ...
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2 votes
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I am trying to develop a theory for this situation: A small blown-up balloon is attached to the center of a compact disc; you let it float as the balloon discharges. Simplifying assumptions: ...
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1 answer
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This post is strategic. I have an answer to the Mythbusters dimpled car question which was asked elsewhere on SE, but since I have a 1 reputation score at the moment and cannot post its answer, ...
The DOuGTrainer's user avatar
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2 answers
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Today I got a new refrigerator carbon water filter (this). Before installing, out of curiosity, I dripped a bit tap water into the filter’s outlet to see if water could flow in and out. Obviously it ...
max sim's user avatar
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1 vote
1 answer
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Budget ~$5k Current setup: 2x 20k cfm water-based smoke machines facing each other 6' apart blowing across the top or bottom of a fan or set of fans. I was hoping there could be a way to get a vortex ...
Flyin-high336's user avatar
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1 answer
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I've got a machine that sucks water. The inlet is half inch. I had been using braided pvc till now but it has started to breathe air which is causing problems with the machine. It also bends under ...
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Are there any engineering or material barriers to making one drone with a large, low-density foam? Could it stay afloat with solar panels, traditional drone propellers and motors, and what height ...
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1 answer
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Some background I am reading through a textbook on atmospheric fluid dynamics. The author is discussing something called the Boussinesq relations, and eventually the following expression arises: $$ \...
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201 views

I made an electric furnace as a university project. It can heat up air inside up to 1000 degrees Celsius. It's not fully sealed so some air can escape from small gaps. Not sure if this would cause a ...
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