Development of density and mass flow rate measurement technologies for slush hydrogen

Ohira, K.

doi:10.1016/j.cryogenics.2003.08.001

Cited by 43 publications

(7 citation statements)

References 7 publications

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“…Furthermore, due to the fact that solid-liquid mixture presents other characteristics, in addition to those related to very low temperatures, the methods of measuring the flow rates of cryogenic biphasic solid-liquid mixtures are limited to only a few. Ohira, Nakamichi and Kihara [10] developed a wave-type flowmeter using a microwave method for slush hydrogen, and two other research groups presented configurations of the used flowmeters [7,11].…”

Section: Cryogenic Fluid Flow Measurementmentioning

confidence: 99%

Experimental Investigation and CFD Modeling of Slush Cryogen Flow Measurement Using Circular Shape Capacitors

Monea

Ionete

Spiridon

2020

Sensors

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The measurement of two-phase cryogenic fluid mixtures flow, also known as slush cryogen flow, with its most attractive form (liquid and solid) is of great interest for various applications, due to its thermodynamic advantages. This paper presents a newly developed device, under the form of a circular capacitor prototype, together with an experimental stand for slush formation. Slush nitrogen was used as testing fluid during the experimental work. Then, the experimental data for slush cryogen flow measurement using the proposed circular shape capacitor were compared with theoretical results obtained by simulation. A three-dimensional flow field model was built and solved for the innovative design slush flowmeter using a computational fluid dynamic (CFD) model. Nitrogen slush density of 874 kg/m 3 , representing approximately 30% solid fraction, was reported for both the modeling and experimental testing, although the numerical investigation is not limited to these values. By comparing experimental vs. simulation results, a deeper view on the designed configuration can be achieved, thus improving the progress in producing high-performance next generation devices for two-phase flow measurement in terms of physical dimensions, length and space between armatures. Even so, the mathematical model has limitations when mixtures with higher percentages of solid phase and particle sizes are encountered.

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Section: Cryogenic Fluid Flow Measurementmentioning

confidence: 99%

Experimental Investigation and CFD Modeling of Slush Cryogen Flow Measurement Using Circular Shape Capacitors

Monea

Ionete

Spiridon

2020

Sensors

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“…Those numerical results are compared with experimental results where it was found that for high Reynolds numbers the pressure loss is reduced by using a two-phase slush flow. Recently, Ohira (2004) worked on the measurement of the density and the mass flow rate of slush hydrogen. The study discussed densimeters types, the capacitance type, and the microwave type.…”

Section: Nomenclaturementioning

confidence: 99%

Prognosis and Numerical Analysis of the Pressure Drop in Slush Hydrogen Vacuum-Jacketed Transfer Lines

Hatem

Zakhia

Zeghondy

et al. 2016

Interfac Phenom Heat Transfer

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Hydrogen offers high combustion qualities and therefore is chosen as a propellant for the national aerospace plane (NASP). The low density of hydrogen is a major inconvenience; therefore, a solid-liquid mixture called SLUSH hydrogen is used to increase the density and cooling capacity. In this paper, a two-phase mixture is modeled using separated flow model in which the mathematical equations are written separately for each phase where different properties and velocities are considered for each phase. Mass, momentum, energy equations, and interfacial phenomena equations are developed with the inclusion of drag force, virtual mass force, mass and momentum transfer, and interfacial shear stress. turbulence effects are treated and multiparticle drag correlations are used. Results for pressure drop across a 1.5 in. Schedule 5S vacuum-jacketed pipe show good agreement comparing it with earlier experimental data and numerical analysis.

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“…The examples given show that as a vehicle fuel, liquefied natural gas (LNG) is a competitive alternative to diesel fuel. Among the advantages of LNG, its environmental and fire safety should be noted, as well as an increase in the service life of engines due to the absence of deposits in the oil, fuel systems and cylinder-piston group [1][2][3][4][5]. However, the use of LNG in operation makes one face a significant problem, namely, the loss of cryogenic fuel during storage [8].…”

Section: Introductionmentioning

confidence: 99%

Diesel locomotive fuel supply system under utilization of slush-like (heterogenic) liquefied natural gas

Асабин

Kabanov

Kurmanova

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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The article analyzes the existing systems for storing and supplying fuel for diesel locomotives. A storage and fuel supply system for a diesel locomotive converted to slush -like (geterogenic) liquefied natural gas has been developed, its advantages are performed. The use of the cooling resource of the slurry fuel of a diesel locomotive to reduce the temperature of the charge air has been substantiated. The coefficient of utilization of the cooling resource of slush-like fuel has been derived. A comparison of the theoretical results of the methodology for calculating the heat-and-power indicators of a diesel locomotive engine converted to a slush-like(geterogenic) liquefied natural gas and the results of a computational experiment have been provided.

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Development of density and mass flow rate measurement technologies for slush hydrogen

Cited by 43 publications

References 7 publications

Experimental Investigation and CFD Modeling of Slush Cryogen Flow Measurement Using Circular Shape Capacitors

Experimental Investigation and CFD Modeling of Slush Cryogen Flow Measurement Using Circular Shape Capacitors

Prognosis and Numerical Analysis of the Pressure Drop in Slush Hydrogen Vacuum-Jacketed Transfer Lines

Diesel locomotive fuel supply system under utilization of slush-like (heterogenic) liquefied natural gas

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