Another non piston method gas compressor

[Lakewood90712]

http://www.greencarcongress.com/2009/03/linde-introducing-ionic-compressor-for-hydrogen-refueling-systems-in-us.html#more

[WellFedEd]

Re: Another non piston method gas compressor

What other "non piston" designs are out there?

[cnghal]

Re: Another non piston method gas compressor

Radial screw, diaphram, hydraulic cylinder and pneumatic (air or gas) cylinder.
I'm sure there are others.

[CraziFuzzy]

Re: Another non piston method gas compressor

funny how they don't say what will be pressurizing the fluid... for the pressures needed, it will likely be a radial screw or piston positive displacement pump, so the argument of less mechanical wear is moot. The advantage of these fluid-to-medium compressors is they keep the compressed gas completely oil free, and minimize/eliminate any sort of gland leakage problems.