The flammability characteristics of the system H2-NO-N2O-Air

Scott, F.E.; Dolah, Robert W. Van; Zabetakis, M.G.

doi:10.1016/s0082-0784(57)80071-x

Cited by 12 publications

(12 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The explosive properties of H 2 -N 2 O have been characterized with numerous studies on ignition delay times [5][6][7], detonation cell size [8,9], and flammability limits [4,10,11]. Recently, Liang et al [12] demonstrated that, at ambient conditions, flames in hydrogen-nitrous oxide mixtures with low concentrations of H 2 can undergo DDT in relatively short distances.…”

Section: Introductionmentioning

confidence: 99%

Flame burning speeds and combustion characteristics of undiluted and nitrogen-diluted hydrogen–nitrous oxide mixtures

Bane

Mével

Coronel

et al. 2011

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

In the present study, some explosive properties of undiluted and nitrogen diluted H 2-N 2 O mixtures were characterized. Laminar burning speeds and the explosioninduced pressure rises were determined experimentally for a range of mixture equivalence ratios (φ = 0.15 − 1.0), dilutions (0 − 55% N 2), and initial pressures (20 − 80 kPa). The measured burning speeds were used to validate laminar burning speed computations using a detailed chemical kinetic mechanism. The computations were then used to estimate burning speeds at high initial pressure and low dilution conditions that could not be measured experimentally. The results demonstrate that hydrogennitrous oxide mixtures exhibit laminar burning speeds as large as 350 cm/s and pressure rise coefficients (K g) as large as 35 MPa•m/s. Also, flames in lean mixtures are shown to be highly unstable which can lead to flame acceleration and possible deflagration-to-detonation transition.

show abstract

Section: Introductionmentioning

confidence: 99%

Flame burning speeds and combustion characteristics of undiluted and nitrogen-diluted hydrogen–nitrous oxide mixtures

Bane

Mével

Coronel

et al. 2011

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

show abstract

“…Moreover, as these processes are running at elevated pressures and temperatures, the flammability limits have to be determined at the same elevated conditions. Yet, in contrast with the flammability limits of common fuels in air, flammability limits in nitrous oxide at ambient conditions are scarce [1][2][3][4], and data at elevated pressures are not available at all in the open literature.…”

Section: Introductionmentioning

confidence: 99%

Flammability limits and explosion characteristics of toluene–nitrous oxide mixtures

Vandebroek

Schoor

Verplaetsen

et al. 2005

Journal of Hazardous Materials

View full text Add to dashboard Cite

“…Under conditions of flame propagation in hydrogen-air mixtures, nitric oxide (NO) exhibits inhibiting properties [6]. The addition of NO leads to narrowing of the flammability range of these mixtures.…”

Section: Introductionmentioning

confidence: 99%

“…However, the addition of NO to rich hydrogen-air mixtures results in inhibition of the process. Figure 1 gives the lower concentration limit for air (for the rich flammability limit for hydrogen) versus the concentration of NO additive in a hydrogen-air mixture (from [6]). The straight line connecting the flammability concentration limits for H 2 /air and H 2 /NO mixtures is in accordance with the Le Chatelier rule for oxidizers.…”

Section: Introductionmentioning

confidence: 99%

“…It can be concluded that the inhibition efficiency of nitric oxides is rather low. Estimates (from the data of [6]) show that, at relatively low amounts of the additive, the rate of reduction in the limiting rich (volumetric) concentration of hydrogen is 4.5% per 1% of the added oxide NO. This rate of reduction corresponds to the thermal effect of hydrocarbons on the rich flammability concentration limits for hydrogen-air mixtures [10].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical simulation of the effect of the addition of NO and NO2 on a rich hydrogen flame using the tracer method

Bunev

2009

Combust Explos Shock Waves

View full text Add to dashboard Cite

The effect of the addition of nitric oxides (NO and NO 2 ) on rich hydrogen-air flames was studied using the tracer method in numerical simulation. It is shown that the effects of these additives are not similar. Both oxides promote the formation of OH and H 2 O in the low-temperature zone of the front. The addition of NO reduces the first maximum of the OH profile and the burning velocity. The addition of NO 2 increases the first maximum of the OH profile and does not change the burning velocity.

show abstract

The flammability characteristics of the system H2-NO-N2O-Air

Cited by 12 publications

References 0 publications

Flame burning speeds and combustion characteristics of undiluted and nitrogen-diluted hydrogen–nitrous oxide mixtures

Flame burning speeds and combustion characteristics of undiluted and nitrogen-diluted hydrogen–nitrous oxide mixtures

Flammability limits and explosion characteristics of toluene–nitrous oxide mixtures

Numerical simulation of the effect of the addition of NO and NO2 on a rich hydrogen flame using the tracer method

Contact Info

Product

Resources

About