Gas-Fueled Binary Energy System with Low-Boiling Working Fluid for Enhanced Power Generation

Morenov, Valentin; Leusheva, Ekaterina; Lavrik, Alexander; Lavrik, Anna; Buslaev, George V.

doi:10.3390/en15072551

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…Issues of improving power quality are addressed in many scientific articles by researchers from almost all countries of the world [1][2][3]. One of the main tasks within this area is to reduce the influence of harmonics on the operation of electrical equipment during the generation, transmission, distribution and consumption of electrical energy [4][5][6]. The relevance of this problem is emphasized by the significant increase in cases being considered in arbitration disputes between suppliers and consumers of electrical energy [7,8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Background Voltage Distortion on Operation of Passive Harmonic Compensation Devices

Skamyin,

Shklyarskiy,

Gurevich

2024

Energies

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This paper discusses the issues of assessing the influence of external distortion sources on the functioning of a shunt passive harmonic filter. In this study, we evaluated the overload of a passive harmonic filter based on determining the contributions of distortion sources. A method was proposed for assessing the contributions of distortion sources, which allowed us, regardless of background distortions, to determine the contributions of consumer loads, as well as the contribution of background distortions. The simulation was carried out using the Simulink MatLab software (version R2023a). Several scenarios were considered in which the following values were varied: supply feeder impedance, level of background distortions, consumer electrical load composition, and passive filter parameters. It was found that the contribution of the background distortion source decreases with increasing impedance of the supply grid. It was determined that the consumer load contribution is independent of background voltage harmonics and can be used to estimate the overload of a passive harmonic filter. It was shown that it is necessary to take into account the overload of the passive filter by currents from background distortion sources, which did not exceed 135% of the rated rms current for the conditions under consideration. A mathematical model was proposed to estimate the overload of a passive filter in the presence of background voltage distortions. This model was obtained during analytical studies and allows one to evaluate the overload of a passive filter, taking into account the short circuit ratio, detuning frequency and power of the passive filter, and the share contribution of background distortion sources.

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Section: Introductionmentioning

confidence: 99%

Influence of Background Voltage Distortion on Operation of Passive Harmonic Compensation Devices

Skamyin,

Shklyarskiy,

Gurevich

2024

Energies

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“…Based on the analysis of the problems of the energy market [1][2][3] and the current green energy agenda [4][5][6], it may be concluded that the issues of waste energy source recovery are among the most pressing. For liquefied natural gas (LNG), one of the possible ways to solve this issue is the recovery and recycling of its boil-off gas, which nowadays is discharged from the LNG tanks using ejectors [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Determination of the Flow Coefficient for a Constrictor Nozzle with a Critical Outflow of Gas

Bolobov

Martynenko

Yurtaev

2023

Fluids

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Reduction of energy expenditures required for various technological processes is a pressing issue in today’s economy. One of the ways to solve this issue in regard to liquefied natural gas (LNG) storage is the recovery of its vapours from LNG tanks using an ejector system. In that respect, studies on the outflow of the real gas through the nozzle, the main element of the ejector, and identifying differences from the ideal gas outflow, are of high relevance. Particularly, this concerns the determination of the discharge coefficient µ as the ratio of the actual flowrate to the ideal one, taking into account the energy losses at gas outflow through the nozzle. The discharge coefficient values determined to date for various nozzle geometries are, as a rule, evaluated empirically and contradictory in some cases. The authors suggest determining the discharge coefficient by means of an experiment. This paper includes µ values determined using this method for the critical outflow of air to atmosphere through constrictor nozzles with different outlet diameters (0.003 m; 0.004 m; 0.005 m) in the pressure range at the nozzle inlet of 0.5–0.9 MPa. The obtained results may be used for the design of an ejector system for the recovery of the boil-off gas from LNG tanks, as well as in other fields of industry, for the design of technical and experimental devices with nozzles for various applications.

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“…Determination of the dynamic component of WOB for drilling with cone bits and extending their motor resource to the level of PDC bits operation time will be presented in the next scientific works of the Mining University [57][58][59].…”

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confidence: 99%

Development of Monitoring and Forecasting Technology Energy Efficiency of Well Drilling Using Mechanical Specific Energy

et al. 2022

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This article is devoted to the development of technology for improving the efficiency of directional well drilling by predicting and adjusting the system of static and dynamic components of the actual weight on the bit, based on the real-time data interpretation from telemetry sensors of the bottom hole assembly (BHA). Studies of the petrophysical and geomechanical properties of rock samples were carried out. Based on fourth strength theory and the Palmgren–Miner fatigue stress theory, the mathematical model for prediction of effective distribution of mechanical specific energy, using machine learning methods while drilling, was developed. An algorithm was set for evaluation and estimation of effective destruction of rock by comparing petrophysical data in the well section and predicting the shock impulse of the bit. Based on the theory provided, it is assumed that the given shock impulse is an actual representation of an excessive energy, conveyed to BHA. This excessive energy was quantitively determined and expressed as an adjusting coefficient for optimal weight on bit. The developed mathematical and predictive model helps to identify the presence of ineffective rock destruction and adjust drilling regime accordingly. Several well drilling datasets from the North Sea were analyzed. The effectiveness of the developed mathematical model and algorithms was confirmed by testing well drilling data.

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Gas-Fueled Binary Energy System with Low-Boiling Working Fluid for Enhanced Power Generation

Cited by 10 publications

References 37 publications

Influence of Background Voltage Distortion on Operation of Passive Harmonic Compensation Devices

Influence of Background Voltage Distortion on Operation of Passive Harmonic Compensation Devices

Experimental Determination of the Flow Coefficient for a Constrictor Nozzle with a Critical Outflow of Gas

Development of Monitoring and Forecasting Technology Energy Efficiency of Well Drilling Using Mechanical Specific Energy

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