Questions tagged [compressed-air]
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Can supersonic flow be achieved without converging diverging nozzle?
Can supersonic flow be achieved without the presence of a converging diverging nozzle if sufficient pressure difference is available?
https://www.tomshardware.com/desktops/pc-building/an-ordinary-...
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Can air velocity be supersonic in a straight pipe?
Consider a sufficiently large reservoir of compressed air at a pressure of $7 \text{ bar}$ (abs.). A tapping of $25 \text{mm}$ diameter of pipe length $1 \text { m}$. The pipe is open to the ...
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How to handle saturated hot air at the inlet of a blower
I have hot (around 60°C) saturated air entering a side channel blower.
Due to process constraints, I can't use a condenser or air dryer (such as desiccant) at the blower inlet.
However, water vapor ...
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Calculate volume of compressed air tank given several variables
For context, I've started drafting an idea for a submarine simulator game, and I want to make as realistic as possible; but this obviously requires doing a lot of math that I'm unfamiliar with. I've ...
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How to handle air pressure circuit with very different setpoint values
I'm a hw/sw guy, with a very limited knowledge about pressure/pneumatic circuits.
For my new job I have to design a closed-loop controller to inflate and maintain two chambers with a given pressure. ...
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I would like to know about the composition of a compressed air system
I am a graduate student and I am planning to conduct high-speed flow experiments using a high-pressure tank. The equipment we currently have is a compressor, air tank, and regulator, and the regulator ...
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Why are double-acting reciproating compressors more efficient than single-acting ones?
On many websites, I read that double-acting reciprocating compressors are more efficient than single-acting compressors.
These sources say it's because they complete two compression cycles on each ...
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How much air pressure is needed to push liquid out of a tank
I want to use compressed air to push diesel out of a 100 gallon rectangular tank for fueling equipment. Tank is 24” tall with a 30’ 3/4” hose reel on top. Height of the nozzle would be 6’ ft from the ...
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Pros and Cons of Carbon Fibre High Pressure Tank
What are the advantages and disadvantages of using carbon fibre for pressure vessel construction?
Carbon fibre has a very high tensile strength and is very light-weight.
According to this calculator ...
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Would there be a flame front in this case of combustion
Suppose a piston enclosing an amount of air-fuel mixture and then this piston compresses the mixture to the point of auto ignition, if every part of the mixture ignite simultaneously is it safe to say ...
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Atlas Copco screw compressor unload abnormal sound
We are facing an issue in our GA 75 FF model compressor. During the unload time the compressor is making some abnormal noise, but during the load it is working fine.
When the machine is unloaded after ...
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Piston Compressed Pneumatic Cannon
During an discussion with friends regarding pneumatic cannons, I came up with this gem :). Piston power pneumatic cannon. My friends however, didn't share my excitement regarding this revolution in ...
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Why is there a MIN and MAX marking on a car coolant bottle?
This question was initially posted in physics stack exchange, then the mechanics stack exchange but I think it's more appropriate for engineering section instead.
I've always thought the minimum and ...
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How long it takes to fill an inflatable to a certain pressure?
I am trying to figure out the inflation/how to calculate the time it takes to fill something to a certain pressure.
I have an inflatable dock I am filling with a portable pump.
The dock is 7ft x 7ft x ...
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Can Vortex tubes be used in cooling rooms?
Vortex tubes have been used extensively to some extent in cooling small areas. However, can they be used to cool larger rooms. Through some research, I found out that an average vortex tube may take ...
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