Recent content by CharlieMason

I checked out the Sandpiper - I see that's a diaphragm pump and not what I started the post with, but near enough. I don't reckon I can easily find the data for the easy calculation of efficiency. I'm only after some theory but the more I think about it, the more I realize there's a lot going...

Ok "conventional" is vague. So a pump that shifts 1litre/second air has more friction inefficiency than pump shifting 1litre/second water, same pressures? Does it depend on the pressure and type of pump required for the that pressure? At 1m head both pumps could be centrifugal and maybe the...

Yes. And if I were shifting energy from electricity to say turning a drill bit in a pneumatic drill the losses of pneumatic drill compared to an electric drill would be huge: there's friction in the compressor, the air hose, and at the drill itself, and then there's exhaust air which still has...

Hi, I'm thinking of a water pump with only the valves as moving parts - the compressed air simply displaces water from a cylinder. I understand it's a solution for where it's easier to deliver compressed air than electricity to the pump site. My question is: where are the energy losses in...