Using a Thermodynamic Approach to Estimate a Temperature Drop of Natural Gas in a Pressure Regulator

Sokovnin, O. M.; Zagoskina, N. V.; Zagoskin, S. N.

doi:10.1134/s0021894419030064

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…Additionally, a thermodynamic model for the pressure regulator is added based on [2]. The solution of flow with friction and heat transfer through the flow lines are based on [3]. Junction elements are added based on [4].…”

Section: Literature Reviewmentioning

confidence: 99%

Design and Mathematical Modeling of Fuel Feed System for Dual Fuel Scramjet

2023

5th ISSE National Conference (INAC-05) on Systems Approach for Self-Reliance in Advanced Technologies

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A Fuel Feed System (FFS) is designed to supply fuels for a Dual Fuel Scramjet engine. The system design is carried out based on the operational requirements of flow rate, pressure, duration within the envelope constraints. The scramjet engine consists of an effervescent injector with liquid hydrocarbon as the main fuel. Gaseous Hydrogen is used for pilot ignition and for emulsifying the liquid hydrocarbon. Hydrogen gas for both the requirements are met through a single source and supply system. The liquid hydrocarbon storage system consists of a standalone propellant tank with positive expulsion device and cavitating venturis. Mathematical modelling is done on the system and from the model outputs, the operational efficacy of the feed system throughout the flight duration is ensured.

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Section: Literature Reviewmentioning

confidence: 99%

Design and Mathematical Modeling of Fuel Feed System for Dual Fuel Scramjet

2023

5th ISSE National Conference (INAC-05) on Systems Approach for Self-Reliance in Advanced Technologies

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“…Three typical faults of gas regulators were classified with a fault diagnosis method adopted combining a complete ensemble empirical mode decomposition with adaptive noise (CEEMDAN) and fuzzy c-means (FCM) clustering [17]. The gas temperature drop was estimated through a mathematical model by using a thermodynamic approach for a direct-acting pressure regulator [18]. Pressure field, velocity field, and energy consumption were studied on a new high multi-stage pressure reducing valve (HMSPRV).…”

Section: Introductionmentioning

confidence: 99%

Parametric Analysis of the I-Stage Structure for a Dual-Stage Gas Pressure Reducing Regulator

et al. 2020

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Gas pressure regulator is an essential component using for the pressurized system in the aircraft. In our paper, we aim to analyze the impact of structural parameters on output pressure for the I-stage structure of a dual-stage gas pressure reducing regulator. Initially, a numerical simulation of the regulator was established and verified by a comparison of dynamic response from the deflation start of the vessel to the deflation complete. Moreover, parametric analysis of the I-stage structure for the regulator was examined to determine the primary and secondary variables and interdependencies with the Box-Behnken design method applied. Furthermore, a multi-objective optimization based on regression analysis was adopted by using the MOGA-II algorithm method, and a Pareto frontier was obtained. Results indicate that the spool mass, the leakage area of spool seal, and their interaction are the significant factors on overshoot. The overshoot presents a trend of decrease first and then increase with the mass and leakage area increase. The spool mass, the mainspring stiffness, the leakage area of spool seal, and their interactions are influential factors on stability. The stability improves with the spool mass decrease, and other factors increase. Besides, the feedback hole area has a small effect on stability. Moreover, the Pareto of the optimization indicates that the performance of the I-stage structure would be optimal when the spool mass is 23.94 g, the feedback hole area is 89.94 mm 2 , the mainspring stiffness is 166.76N/mm, and the leakage area of spool seal is 0.06 mm 2 .

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