caa a22 4500 475816137 CHVBK 20180406123810.0 cr unu---uuuuu 170329e20000501xx s 000 0 eng 10.1023/A:1003675722428 doi (NATIONALLICENCE)springer-10.1023/A:1003675722428 Steady-state operation of a compressor for a proton exchange membrane fuel cell system [Elektronische Daten] [D. Thirumalai, R.E. White] The performance of a system consisting of a proton exchange membrane (PEM) fuel cell coupled to a centrifugal air compressor is simulated. Two modes of operation of the system are investigated: one in which the speed of the compressor is constant, and the other in which the compressor speed is varied with the electric load on the fuel cell stack. The operating characteristics of the compressor and the PEM fuel cell stack and their influence on the system efficiency are analyzed for a step change in the stack current. The effects of the fuel cell stack back-pressure and the electric load on the compressor power consumption and the system efficiency are studied. It is found that the system efficiency is higher when the fuel cell stack is operated at a constant oxygen gas stoichiometry by varying the compressor speed instead of at a constant compressor speed. The system model can be used to determine the rotation speed of the compressor for various electric loads. Kluwer Academic Publishers, 2000 compressor nationallicence fuel cell nationallicence system operation nationallicence Thirumalai D. Department of Chemical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut White R.E. Department of Chemical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut Journal of Applied Electrochemistry Kluwer Academic Publishers 30/5(2000-05-01), 551-559 0021-891X 30:5<551 2000 30 10800 https://doi.org/10.1023/A:1003675722428 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1003675722428 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Thirumalai D. Department of Chemical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut NATIONALLICENCE 700 1- White R.E. Department of Chemical Engineering, University of South Carolina, 29208, Columbia, SC, USA aut NATIONALLICENCE 773 0- Journal of Applied Electrochemistry Kluwer Academic Publishers 30/5(2000-05-01), 551-559 0021-891X 30:5<551 2000 30 10800 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer