Regarding compressor power
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I have a few questions for your advice: 1. When using centrifugal compressors to compress air and hydrogen respectively, with the same initial flow rate and pressure and compression to the same exhaust pressure, do you think the power of the two compressors is the same? 2. Use reciprocating compressors to compress air and hydrogen separately, with the same initial flow rate and pressure, and compress them to the same exhaust pressure. Do you think the power of the two compressors is the same? 3. When compressing the same gas using a reciprocating compressor and a centrifugal compressor, with identical initial pressure and flow rates as well as exhaust pressures, is the work required to compress the gas the same?
1. Whether it is centrifugal or piston-type, the power required to compress hydrogen gas differs from that needed to compress air, as the properties of the gases are different. 2. When comparing centrifugal and piston systems, it depends on the specific operating conditions; generally, well-designed piston systems require less power. But those who can use a centrifuge generally won’t use a piston. The volume of air that a centrifuge can handle is much greater than that of a piston.
1. Centrifuges and reciprocating machines use the same type of medium, but their power levels differ; generally, reciprocating machines have lower power. Hydrogen has a low molecular weight, and aside from high-pressure hydrogen cycle compressors that use centrifuges, reciprocating machines are used in most cases. 2. For the same model, the power varies depending on the medium being compressed. For reciprocating machines, when it comes to compressing air and hydrogen, more power is required to compress air.
1 different, 2 different, 3 different
They are all different; the physical properties of compressed gases vary. Secondly, there is a significant difference in efficiency between centrifuges and reciprocating machines.