2112 KB31 KB199920252013Drobnič, BoštjanMori, MitjaMržljak, TilenSekavčnik, Mihaelštevilka:10letnik:59str. 585-594, SI 116ISSN:0039-2480COBISSID:13158683URN:URN:NBN:SI:doc-NR7MIJ6OenAssociation of Mechanical Engineers and Technicians of Slovenia et al.Zveza strojnih inženirjev in tehnikov Slovenije et al.Strojniški vestnikadvanced energy systemsalkaline water electrolysiselektrolizaelektrolizerjienergijske karakteristikeenergy characteristicshydrogen productionnapredni energetski sistemiobnovljivi viri energijeproizvodnja vodikarenewable energy sourcesIntegral characteristics of hydrogen production in alkaline electrolysers|This paper summarises the results of experimental investigations of a commercial alkaline water electrolyser used for hydrogen production tobalance decentralised electricity production from renewables. Experiments have been conducted on an alkaline water electrolyser operatingat a pressure range up to 25 bar g and having a maximum production capacity of 15 Nm hydrogen per hour. In stationary conditions, theenergy efficiency of an electrolytic cell has been calculated, and the characteristics of the electrolyser stack has been described with anempirical equation. The energy efficiency of the entire system and hydrogen losses within the boundaries of the system have been determined.Experimental results show that the energy efficiency of an electrolytic cell at typical operating conditions ranges between 73 and 83%, andthe energy efficiency of the entire system is between 50 and 60%. Hydrogen losses within the boundaries of the system, compared to the totalproduced amount of hydrogen, are between 10 and 25%, depending of operating conditionsTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Ljubljani, Fakulteta za strojništvo