Effect of ambient pressure on local concentration measurement of transient hydrogen jet in a constant-volume vessel using spark-induced breakdown spectroscopy精品.pdfVIP

i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 4 0 ( 2 0 1 5 ) 4 7 1 7 e4 7 2 5 Available online at ScienceDirect journal homepage: /locate/he Effect of ambient pressure on local concentration measurement of transient hydrogen jet in a constant-volume vessel using spark-induced breakdown spectroscopy Md Tasyrif Abdul Rahman a,b, Nobuyuki Kawahara a, Kazuya Tsuboi a, Eiji Tomita a, * a Heat Power Engineering Laboratory, Graduate School of Natural Science and Technology, Okayama University, Tsushima-Naka 3-1-1, Kita-Ku, Okayama 700-8530, Japan b School of Mechatronic Engineering, Universiti Malaysia Perlis, Ulu Pauh 02600, Perlis, Malaysia a r t i c l e i n f o a b s t r a c t Article history: We report an investigation of the effects of the ambient pressure on fuel concentration Received 1 November 2014 measurements of an injected jet of hydrogen using spark-induced breakdown spectros- Received in revised form copy (SIBS) in a constant-volume vessel. Measurements were carried out using hydrogen 14 January 2015 injected into a nitrogen environment with different ambient pressures, and the local Accepted 20 January 2015 concentrations were measured at various spark locations. The optical emission from the Available online 27 February 2015 spark discharge at 501 nm (corresponding to nitrogen) and 656 nm (corresponding to hydrogen) was observed using SIBS. Spectrally resolved emission from the plasma was Keywords: detected simulta