Hydrogen-Enriched Compressed Natural Gas as a Fuel for Engines

Ma, Fenglong; Naeve, Nashay; Wang, Mingyue; Jiang, L.; Chen, Renzhe; Zhao, Shikai

doi:10.5772/9852

Cited by 20 publications

(10 citation statements)

References 18 publications

(24 reference statements)

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“…It also allows for the hydrogen infrastructure to slowly become established until the production and efficiency demands can be met for the hydrogen economy. Although there is currently a huge number of research works taking place regarding HCNG, there are certainly many steps to take before wide-spread implementation can occur [10]. In this regard, an LCA of a demonstration project for a vehicle use of hydrogen blended natural gas performed by [8] accesses and compares the environmental aspects of natural gas, HCNG with 15% and 30% by volume, and hydrogen as vehicular fuels within the scope of a demonstration project.…”

Section: Previous Workmentioning

confidence: 99%

Life cycle analysis of HCNG light-duty vehicle demonstration project

Gupta

et al. 2019

Matéria (Rio J.)

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The demonstration is an effective initiative to bridge the gap between a premature technology and its largescale commercialization. A systematic method of LCA was used to perform the well-to-wheel analysis of a CNG light-duty truck operated with 0%, 15%, and 30% blends of hydrogen with compressed natural gas fuel under the system boundary of "per vehicle km". The GREET simulation was performed on GREET_1 (Excel Series_2017) to evaluate hydrogen production pathways with numerous parametric assumptions adopted to base the study in the context of China. Resource use, fossil energy use, GHG emission, and major air pollutants namely and PM were studied. The idea was to demonstrate the effects of hydrogen addition throughout the entire fuel cycle of end-use of HCNG in an LDV. The hydrogen blend of 30% with conventional CNG decreased the well-to-wheel GHG emission compared with 0%HCNG by 32.982%, 29.275%, and 9.694% with hydrogen pathways such as solar, biomass, and coke oven gas, respectively. Moreover, for 30%HCNG (Conv.NG), the well-to-wheel total energy consumption was increased by 15.176%, and 15.719% for solar and biomass-based pathways, respectively. However, although the energy consumption was increased for solar and biomass-based 15%HCNG and 30%HCNG pathways compared with 0%HCNG, the feedstock used was renewable and qualitatively cleaner. The worst scenario was found in the form of 30%HCNG (Conv.NG) with grid electrolysis pathway which showed 60.648% increment in WTW GHG and 75.479% increment in WTW total energy compared with baseline 0%HCNG (Conv.NG). The booming renewable electricity generation and availability of a tremendous amount of coke oven gas as by-products from coking industries in China can establish a prospective platform for sustainable hydrogen economy in China and is supposed to promote the commercialization of HCNG vehicles in future.

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Section: Previous Workmentioning

confidence: 99%

Life cycle analysis of HCNG light-duty vehicle demonstration project

Gupta

et al. 2019

Matéria (Rio J.)

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“…Generally, the gaseous fuel is injected by using the spray technique or carburetion to a compression ignition engine. The gaseous mixer burns and becomes the contributor to the power producing (Ma et al, 2010). Various gaseous fuels such as biogas (Bora and Saha, 2015), LPG (Lata et al, 2012), natural gas (Song, 1984), and hydrogen (Adnan et al, 2012;Premkartikkumar et al, 2013Premkartikkumar et al, , 2015 are used as fuels for diesel engine, to maintain the combustion temperature high and to decrease the smoke emission.…”

Section: Features Of Fumigationmentioning

confidence: 99%

Review on effects of performance, emission and combustion characteristics of emulsified fuel in bifuel engine

Gopidesi

Premkartikkumar

2018

PIE

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The emission norms of diesel engines are turned more stringent due to continuous increasing of environmental pollutants. Thus, global researchers explore to reduce emissions from diesel engines by fulfilling the performance parameters. The major emissions in the diesel engines are the NOx emissions due to the higher combustion temperatures. Generally, dual fuel engines play a vital role in regulating both emission and performance parameters. Diesel engines are converted to dual fuel mode by using the various techniques such as blend, fumigation, and emulsion. Among these, water-diesel emulsion (WiDE) also can lessen the emissions of NOx and other pollutants promptly. It is observed that the combination of emulsified fuel and the gaseous fuels showed a simultaneous improvement in the thermal efficiency and reduction of NOx emissions. Various emulsion preparation techniques and effects of different gaseous fuels used with emulsified fuels in bifuel engines have been reviewed in this paper.

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“…Причем уменьшение тем интенсивнее, чем беднее ТВС. К подобным результатам пришли исследователи из Гентского университета [13], университета Цинхуа [14] и Лундского университета при изучении влияния добавок водорода в количестве 10 %, 20 % (n квд = 3800 мин -1 ), 30 %, 55 % (n квд = 800 мин -1 ) и 25 % (n квд = 1200 мин -1 ) Заключение. Результаты экспериментального и теоретического исследований характеристик распространения пламени в КС ДВС с искровым зажиганием и их влияние на полноту сгорания Hythane и токсичность отработавших газов позволяют сделать следующие выводы.…”

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Effect of Turbulent Flame Propagation Velocity and Zone Width on the Unburnt Hydrocarbon Concentration and Combustion Efficiency in a Spark-Ignition Engine

Shaykin

Galiev

2019

HoBMSTU.SME

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The investigation considers how combustion efficiency and exhaust gas (unburnt hydrocarbon) toxicity are linked to the fundamental flame propagation characteristics (flame propagation velocity and reaction zone width). We present combustion efficiency and unburnt hydrocarbon concentration as functions of fundamental flame propagation characteristics, maximum flame temperature, flame failure temperature and thickness of the unburnt fuel layer adjacent to the combustion chamber walls. Comparing combustion efficiency computed according to the equation proposed to combustion efficiency derived by using an experimentally obtained indicator diagram showed that the data are in good agreement. We studied the connection between unburnt hydrocarbon emission and combustion efficiency. We detected that increasing combustion efficiency leads to lower unburnt hydrocarbon emission, which is explained by reduction of the unburnt fuel ratio in the layer adjacent to the wall. We propose a new technique for calculating unburnt hydrocarbon amount in engine exhaust gases. We show that our technique makes it possible to determine the chemical composition of the air-fuel mixture and the values of flame propagation characteristics that ensure a decrease in unburnt hydrocarbon emission. The results of our study may be used to develop or refine methods of increasing combustion efficiency of composite fuels and reducing exhaust gas toxicity in combustion chambers of internal combustion engines and other power plants.

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Hydrogen-Enriched Compressed Natural Gas as a Fuel for Engines

Cited by 20 publications

References 18 publications

Life cycle analysis of HCNG light-duty vehicle demonstration project

Life cycle analysis of HCNG light-duty vehicle demonstration project

Review on effects of performance, emission and combustion characteristics of emulsified fuel in bifuel engine

Effect of Turbulent Flame Propagation Velocity and Zone Width on the Unburnt Hydrocarbon Concentration and Combustion Efficiency in a Spark-Ignition Engine

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