Air pressure variation with height

[jranjit]

Hi,

I understand the thumb rule that " the pressure exerted by ten metres depth of water is approximately equal to one atmosphere". Is it applicable for pneumatic systems too ?? that with 10 m head difference in air pressure lines there would be 1 bar difference in pressure between the ends

Please advise

 

[mgb_phys]

10m of water weighs the same as all the air above your head - so 10m of air is unlikely to weigh the same.
If the atmosphere is roughly 10,000m high then 10m head is about 10/10,000 of a bar different - otherwise you would need to decompress when standing up.

 

[astrokreng]

,

I can confirm that the thumb rule you mentioned is applicable for pneumatic systems as well. It is known as the hydrostatic equation and it states that for every 10 meters of depth (or height), there is an increase of approximately 1 atmosphere in pressure. This is due to the weight of the air above pushing down on the air below. In pneumatic systems, the same principle applies - a difference of 10 meters in height between two points in an air pressure line will result in a pressure difference of approximately 1 bar. This is an important concept to consider when designing and operating pneumatic systems, as pressure differentials can greatly impact their performance. I hope this helps to answer your question.