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   predicting relationship among hydrogen flame length, flame ports, and volume flow for efficient burner design: an experimentally validated theoretical approach  
   
نویسنده zainul rahadian ,qayoom abdul ,ahmad muhammad ,butt osama ,wong shen ,rahim nasrudin ,krismadinata
منبع journal of medicinal and pharmaceutical chemistry research - 2023 - دوره : 5 - شماره : 12 - صفحه:1109 -1119
چکیده    A total shift from fossil fuel based economy to green hydrogen based economy requires major technological upgrades and theoretical understanding. hydrogen is a difficult fuel and unlike other fossil fuels, its flame characteristics differ in terms of flame speed, flashback, length, heat transfer, visibility, etc. in this study, a theoretical approach has been presented to estimate flame length in relation to orifice size, number of orifices, and volume flow rate of hydrogen. the theoretical approach is based on velocity and volume flow changes with reference to orifice size. the approach has been validated experimentally using various volume flow rates and orifice sizes. it has been observed that flame length has a permanent direct relation (increase in mass flow increases flame length) with flow rates. however, the flame length increases with an increase in orifice size (by keeping the flow rate constant) to a certain orifice size, and then starts decreasing. further increase in orifice size results in flashback. it has been estimated that the flashback occurs when the velocity of hydrogen falls below a certain value i.e. 10 m/s. moreover, gas velocities, higher than optimum due to very small orifice size prevent ignition to occur at all.
کلیدواژه burner design ,clean combustion ,hydrogen ,modeling ,renewable
آدرس universitas negeri padang, faculty of mathematics and natural sciences, department of chemistry, indonesia, university of malaya, higher institution centre of excellence (hicoe), um power energy dedicated advanced centre (umpedac), malaysia, university of malaya, higher institution centre of excellence (hicoe), um power energy dedicated advanced centre (umpedac), malaysia, university of malaya, higher institution centre of excellence (hicoe), um power energy dedicated advanced centre (umpedac), malaysia, xiamen university malaysia, department of electrical and electronics engineering, malaysia, national defense university of malaysia, faculty of defense science and technology, department of electrical engineering, malaysia, universitas negeri padang, centre for energy and power electronics research, indonesia
پست الکترونیکی krisma@ft.unp.ac.id
 
     
   
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