naa a22 4500 510822622 CHVBK 20180411083541.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1007/s12541-013-0225-5 doi (NATIONALLICENCE)springer-10.1007/s12541-013-0225-5 Performance evaluation of natural gas based steam reformer for PEMFC [Elektronische Daten] [Seung-Hwan Park, Tae-Hyun Jo, Jun-Hee Han, Bong-Gyu Kim, Jeong-Hwan Choi, Do-Hyung Lee] This paper presents performance evaluation of natural gas based steam reformer with special attention on the operating conditions of internal combustor. In steam reformer in which strong endothermic process is involved, appropriate control of heat source is highly important that enables the efficient hydrogen production. In this study, experimental measuring device was setup to evaluate the performance of steam reformer for 5 kW PEMFC. The objective of the study is to investigate the dependence of the performance such as hydrogen reforming efficiency on the operation conditions such as inflowing mixed gas ratio and heat transfer through main reforming reactor and auxiliary combustor. Experimental results showed that the hydrogen conversion rate can be improved through the temperature distribution control based on (1) main reactor inlet gases ratio such as steam to carbon ratio (SCR) and (2) air-fuel ratio at the auxiliary combustor. With the increment of the amount of fuel in the combustor, the overall internal temperature could increase generally, but the thermal efficiency does not always increase. The study shows that the thermal efficiency and the fuel conversion rate of steam reformer could be improved by the effective heat transfer design and optimized parameter setup such as appropriate inlet gas mixed ratios. Korean Society for Precision Engineering and Springer-Verlag Berlin Heidelberg, 2013 Steam reformer nationallicence Combustor nationallicence Natural gas nationallicence Fuel cell nationallicence PEMFC nationallicence Conversion rate nationallicence Efficiency nationallicence PEMFC : polymer electrolyte membrane fuel cell nationallicence SCR : steam to carbon ratio nationallicence A/F : air-fuel ratio nationallicence F i : molar flow rate of species i nationallicence LHV i : low heating value of species i nationallicence n i : mole of species i nationallicence η : thermal efficiency nationallicence Park Seung-Hwan Department of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, 133-791, Seoul, South Korea aut Jo Tae-Hyun Department of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, 133-791, Seoul, South Korea aut Han Jun-Hee Department of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, 133-791, Seoul, South Korea aut Kim Bong-Gyu R&D Division, Korea Gas Corporation, 1248, Suin-ro, Sangnok-gu, 426-790, Ansan-si, Kyeonggi-do, South Korea aut Choi Jeong-Hwan R&D Division, Korea Gas Corporation, 1248, Suin-ro, Sangnok-gu, 426-790, Ansan-si, Kyeonggi-do, South Korea aut Lee Do-Hyung Department of Mechanical Engineering, Hanyang University, 55, Hanyangdaehak-ro, Sangnok-gu, Ansan-si, 426-791, Kyeonggi-do, South Korea aut International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/9(2013-09-01), 1661-1665 2234-7593 14:9<1661 2013 14 12541 https://doi.org/10.1007/s12541-013-0225-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12541-013-0225-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Park Seung-Hwan Department of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, 133-791, Seoul, South Korea aut NATIONALLICENCE 700 1- Jo Tae-Hyun Department of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, 133-791, Seoul, South Korea aut NATIONALLICENCE 700 1- Han Jun-Hee Department of Mechanical Engineering, Hanyang University, 222, Wangsimni-ro, Seongdong-gu, 133-791, Seoul, South Korea aut NATIONALLICENCE 700 1- Kim Bong-Gyu R&D Division, Korea Gas Corporation, 1248, Suin-ro, Sangnok-gu, 426-790, Ansan-si, Kyeonggi-do, South Korea aut NATIONALLICENCE 700 1- Choi Jeong-Hwan R&D Division, Korea Gas Corporation, 1248, Suin-ro, Sangnok-gu, 426-790, Ansan-si, Kyeonggi-do, South Korea aut NATIONALLICENCE 700 1- Lee Do-Hyung Department of Mechanical Engineering, Hanyang University, 55, Hanyangdaehak-ro, Sangnok-gu, Ansan-si, 426-791, Kyeonggi-do, South Korea aut NATIONALLICENCE 773 0- International Journal of Precision Engineering and Manufacturing Springer Berlin Heidelberg 14/9(2013-09-01), 1661-1665 2234-7593 14:9<1661 2013 14 12541 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer