Predicting Wobbe Index and methane number of a renewable natural gas by the measurement of simple physical properties

Roy, Partho Sarothi; Ryu, Christopher; Park, Chan Seung

doi:10.1016/j.fuel.2018.03.074

Cited by 24 publications

(11 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Case 1 considers gas quality management while case 6 does not. Generally, case 1 shows higher WI than case 6 but it remains within the allowable range (30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40)(41)(42)(43)(44)(45). Without the gas quality constraints, case 6 violates the range, i.e., between 2:00 and 7:00, the WI of case 6 is below 30.…”

Section: Studies On Gas Quality Managementmentioning

confidence: 99%

“…In 1, SG is defined as the ratio of the considered gas density to the air density at the same standard temperature and pressure [24,32]. This paper regards SG to limit hydrocarbon content, where the density of hydrogen, mixed gas and air are denoted as ℎ and .…”

Section: A Gas Quality Indicesmentioning

confidence: 99%

“…Equations (30) and 31 . To define the gas flow , , constraints (32) and (33) are utilized as the Weymouth gas flow equation, where is the Weymouth equation constant. The gas turbine output , is restricted in (34).…”

Section: E Gas System Constraintsmentioning

confidence: 99%

See 2 more Smart Citations

Economic-Effective Multi-Energy Management Considering Voltage Regulation Networked With Energy Hubs

Zhao

Cao

et al. 2021

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

This paper develops a novel two-stage coordinated volt-pressure optimization (VPO) for integrated energy systems (IES) networked with energy hubs considering renewable energy sources. The promising power-togas (P2G) facilities are used for improving the interdependency of the IES. The proposed VPO contains the traditional volt-VAR optimization functionality to mitigate the voltage deviation while ensuring a satisfying gas quality due to the hydrogen mixture. In addition to the conventional voltage regulating devices, i.e., on-load tap changers and capacitor banks, P2G converter and gas storage are used to address the voltage fluctuation problem caused by renewable penetration. Moreover, an effective two-stage distributionally robust optimization (DRO) based on Wasserstein metric is utilized to capture the renewable uncertainty with tractable robust counterpart reformulations. The Wasserstein-metric based ambiguity set enables to provide additional flexibility hedging against renewable uncertainty. Extensive case studies are conducted in a modified IEEE 33-bus system connected with a 20-node gas system. The proposed VPO provides a voltage-regulated economic operation scheme with gas quality ensured that contributes to high-quality but low-cost multienergy supply to customers.

show abstract

Section: Studies On Gas Quality Managementmentioning

confidence: 99%

Section: A Gas Quality Indicesmentioning

confidence: 99%

See 1 more Smart Citation

Economic-Effective Multi-Energy Management Considering Voltage Regulation Networked With Energy Hubs

Zhao

Cao

et al. 2021

IEEE Trans. Power Syst.

View full text Add to dashboard Cite

show abstract

“…This favors the development of new, faster, and versatile quality control methods. Some of them are based on physical measurements, such as combustion energy, speed of sound, or density, and they have been applied to determine the heating value [9], the lower heating value plus the Wobbe index (WI), and the stoichiometric air-fuel ratio [10], as well as the Methane number, WI, and CH 4 , C 2 H 6 , and CO 2 concentrations [5,[9][10][11]. Noteworthy, these methods require complex instrumentation.…”

Section: Introductionmentioning

confidence: 99%

New Ways for the Advanced Quality Control of Liquefied Natural Gas

et al. 2022

View full text Add to dashboard Cite

Currently, gas chromatography is the most common analytical technique for natural gas (NG) analysis as it offers very precise results, with very low limits of detection and quantification. However, it has several drawbacks, such as low turnaround times and high cost per analysis, as well as difficulties for on-line implementation. With NG applications rising, mostly thanks to its reduced gaseous emissions in comparison with other fossil fuels, the necessity for more versatile, fast, and economic analytical methods has augmented. This work summarizes the latest advances to determine the composition and physico-chemical properties of regasified liquid natural gas, focusing on infrared spectroscopy-based techniques, as well as on data processing (chemometric techniques), necessary to obtain adequate predictions of NG properties.

show abstract

“…In a closed combustion engine, a gas engine (reciprocating gas engine), one of the gas quality parameters used is methane number (MN). The MN is defined as the percentage of methane in a methane/hydrogen mixture which has the same knocking behavior as the gas mixture to be investigated under well-defined testing conditions [1][2][3]. Knocking in internal combustion engine results from the spontaneous ignition of a portion of the end gas mixture in the combustion chamber ahead of the propagating flame [4][5].…”

Section: Introductionmentioning

confidence: 99%

Methane Number Improvement of Gas from LNG Regasification Unit

Tjojudo

Kartohardjono

2018

E3S Web Conf.

View full text Add to dashboard Cite

Methane Number (MN) is one of quality requirement of gas as fuel for gas engine, which indicates fuel capability to avoid knocking in the engine. Higher MN provides better quality of gas for gas engine. Natural gas with higher methane (CH4) and fewer higher hydrocarbon, tends to have higher MN score. This study aims to obtain heating methods of LNG to produce vapor that has appropriate MN as a fuel gas supply to gas engine. The simulation for LNG regasification prepared is an approach to the design of the existing regasification facility of the power plant in Bali. The temperature ranges for LNG heating simulation were obtained based on saturated temperatures of LNG phase envelopes. In the simulation. to obtain a certain MN value can be conducted by adjusting the temperatures at two different values i.e. above -110 ° and below - 80 °. To produce LNG vapor that has MN of 80 either through higher temperature of heating (HT heating) or lower temperature of heating (LT heating) requires more energy than direct heating without MN improvement. Heat loading for LT heating is higher than HT heating due to more temperature defference between LT and heating fluid temperatures. The ability of engine to produce power decreased with decreasing fuel gas MN. The power increment increases for lower MN gas if MN improvement is conducted.

show abstract

Predicting Wobbe Index and methane number of a renewable natural gas by the measurement of simple physical properties

Cited by 24 publications

References 16 publications

Economic-Effective Multi-Energy Management Considering Voltage Regulation Networked With Energy Hubs

Economic-Effective Multi-Energy Management Considering Voltage Regulation Networked With Energy Hubs

New Ways for the Advanced Quality Control of Liquefied Natural Gas

Methane Number Improvement of Gas from LNG Regasification Unit

Contact Info

Product

Resources

About