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Modern subs have recirculation pumps akin to air conditioning in say, big stores that go all the time, and have filters to keep pollutants, etc out of the seamen"s breathing spaces, a smart and safety-oriented idea. On atomic and modern Diesel subs these recirculation pumps- also akin to those on airliners, run all the time, at least when the vessel is submerged.
What else can I help you with?
What causes a submarine to sink?
pressurised water is filled in the outer cell. and air is removed.
What is the advantage of using a pressurised nuclear reactor?
In a pressurised nuclear reactor the temperature is very high, which cn be accepted as a point for this.
Why do an aeroplane are often 'pressurised'?
As aeroplanes fly high in the atmosphere, where the air is thin, the inside has to be pressurised to allow the passengers and crew to breath.
How do people get in space?
They take it with them, in pressurised tanks.
Can you take pressurised cans onto flights?
no
Why can you wear ordinary clothes in a space shuttle?
because it has been pressurised in a similar way (outcome) to how a commercial airplane is pressurised for passengers to fly at altitude.
Experience of working in a pressurised and busy environment?
yes
Does the temperature of nitrogen increase when it is pressurised?
Generally, yes
What is the necessity of pressurised cabins in aeroplanes?
no your gonna die
What brewery was first to introduce keg beer?
Keg beer is a term for beer which is served from a pressurised keg. Watney's (UK) started with an experimental pressurised beer Red Barrel which was served in a pressurised Keg rather than the traditional Cask (barrel) in 1936. The use expanded rapidly circa 1960
Difference between hydraulics and pneumatics?
hydraulic is liquid based, pneumatic is air.
Why is liquid cooling system pressurised?
to increase the boiling point of the coolant
