Patent ID: 7935446
Filing Date: 2011-05-03
Classification: H01M,Y02E

Abstract:
1. A method for operating a fuel cell system, comprising: supplying a process gas to the fuel cell system via a liquid ring pump, wherein impurities contained in the process as are removed by an operating liquid of the liquid ring pump; monitoring a contamination with the impurities of the operating liquid, wherein the contamination of the operating liquid is monitored by measuring the conductivity of the operating liquid; interrupting an operation of a fuel cell block of the fuel cell system when a contamination upper limit of the of the operating liquid is exceeded; exchanging the operating liquid or purifying the operating liquid via a purifying device when a contamination lower limit value of the operating liquid is exceeded, wherein a component flow of the operating liquid is transmitted via the purifying device, and wherein the purifying device includes an ion exchanger.