Experiment and modelling of supercritical pyrolysis and coking of RP-3 aviation kerosene in a U-bend tube

Bao, Zewei; Ye, Tongqi; Wang, Renting; Zhu, Quan

doi:10.1016/j.cej.2022.140234

Cited by 11 publications

(4 citation statements)

References 39 publications

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“…Drastically changed thermal properties will lead to heat transfer enhancement. In addition, the thermal cracking of hydrocarbon fuel at supercritical pressure has also been studied by many other scholars [104–106] …”

Section: Numerical Simulation Methods For Active Cooling Process In C...mentioning

confidence: 99%

“…In addition, the thermal cracking of hydrocarbon fuel at supercritical pressure has also been studied by many other scholars. [104][105][106] The thermal cracking of hydrocarbon fuels produces many small molecules, some of which (olefins, etc.) are important precursors of the coking reaction and can cause surface phenomena.…”

Section: Physicochemical Process Of Hydrocarbon Fuels In the Regenera...mentioning

confidence: 99%

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Application of Carbon Fiber‐Reinforced Ceramic Composites in Active Thermal Protection of Advanced Propulsion Systems: A Review

Jing

Xin

Zhang

et al. 2023

The Chemical Record

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Thermal protection is one of the crucial issues for the advanced propulsion systems of Reusable Launch Vehicles. New service requirements for materials, such as high strength, low density, low thermal expansion, high thermal stability, etc., are raised for the thermal structure with the increasing demand of flight Mach numbers and thrust‐to‐weight ratio. Carbon fiber‐reinforced ceramic composites, which generally meet the aforementioned requirements, show great potential for various applications and they have been widely applied in the thermal protection for hypersonic vehicles. This paper gives a comprehensive and systematic review of current research status for carbon fiber‐reinforced ceramic composites applied in the thermal structure of advanced propulsion systems. Three aspects are presented and discussed: the ceramic composites fabrication and the property characterization, the thermal performance of composite thermal structure used in practical engines, and the numerical methods for predicting mechanical and thermal properties of composites as well as the physicochemical phenomenon in the cooling channels. Firstly, the main manufacturing processes for the carbon‐reinforced ceramic composites are presented and the corresponding advantages and disadvantages are analyzed. The high‐temperature oxidation and ablation behaviors of composites are demonstrated and the improvement of oxidation and ablation resistance by introducing the ultra‐high‐temperature ceramics into C/C composites is discussed in detail. Then, several typical applications of carbon fiber‐reinforced ceramic composites (mainly C/SiC), including the work of RCI, JAXA and NASA, have been reviewed and analyzed. After that, the current research status of macroscale equivalent and multiscale numerical methods for predicting the mechanical and thermal properties of composites as well as the complex physicochemical phenomenon occurring in hydrocarbon fuels are sorted out. Finally, several potential prospects are pointed out for the future research on the thermal protection of advanced propulsion systems based on the carbon fiber‐reinforced ceramic composites.

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Section: Numerical Simulation Methods For Active Cooling Process In C...mentioning

confidence: 99%

Section: Physicochemical Process Of Hydrocarbon Fuels In the Regenera...mentioning

confidence: 99%

Application of Carbon Fiber‐Reinforced Ceramic Composites in Active Thermal Protection of Advanced Propulsion Systems: A Review

Jing

Xin

Zhang

et al. 2023

The Chemical Record

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show abstract

“…In terms of structural design and calorimetric principle, active thermal protection with hydrocarbon fuel as the combustible coolant has been considered as an efficient approach to solving the problem of aircraft thermal management. 4,5 Unfortunately, the practical application of hydrocarbon fuel presents formidable problems of insufficient performance, especially inferior oxidation stability. 6 The inadequate oxidation stability of the fuel leads to a decline in quality, thereby reducing energy efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The thermal energy generated by aircraft at a high flight speed could cause irreversible damage to the airframe. , Traditional physical cooling methods have been difficult to meet the demand. In terms of structural design and calorimetric principle, active thermal protection with hydrocarbon fuel as the combustible coolant has been considered as an efficient approach to solving the problem of aircraft thermal management. , …”

Section: Introductionmentioning

confidence: 99%

Strategically Designed Hyperbranched Polyglycerol as an Efficient Integrated Additive for Hydrocarbon Fuels

Jiang

Shao

et al. 2023

J. Phys. Chem. C

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In this study, palmitoyl and hindered phenolic hyperbranched polyglycerol (CBHPG), with hyperbranched polyglycerol (HPG) as the structural core and hindered phenol or alkyl chain as the decorated shell, has been strategically designed and synthesized as an efficient integrated additive to enhance the energy efficiency and inhibit the oxidation coking of hydrocarbon fuels. The superior thermal stability and solubility of CBHPG were confirmed by thermal gravimetric analysis and dynamic light scattering. In the presence of CBHPG with high antioxidant activity, the oxidation induction time of n-undecane increased more than 2-fold at 170 °C. In deposition tests, the amphiphilic macromolecule CBHPG showed excellent performance with 58% oxidation coking inhibition rate of Chinese Jet Fuel (RP-3). The Jet Fuel Thermal Oxidation Stability test at 355 °C also exhibited that CBHPG could greatly reduce the deposit of RP-3 by decreasing the deposit rating from >4 to <1. In cracking experiments, the addition of 0.1 wt % CBHPG with sufficient polymerization could increase the conversion of n-undecane by 17.6%, with the corresponding heat sink by 6.1% at 675 °C. The above results indicated that CBHPG could efficiently enhance the performance of hydrocarbon fuels due to multipurposes in antioxidation, coking inhibition, and cracking promotion. CBHPG with a strategically designed structure as an integrated additive shows great promise in improving the energy efficiency and safety in future advanced aircraft.

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Improve the thermal performance of precooler by enhancing the utilization of chemical heat sink: Refined design method and characteristic analysis

Xu,

Wang,

et al. 2024

Applied Thermal Engineering

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Experiment and modelling of supercritical pyrolysis and coking of RP-3 aviation kerosene in a U-bend tube

Cited by 11 publications

References 39 publications

Application of Carbon Fiber‐Reinforced Ceramic Composites in Active Thermal Protection of Advanced Propulsion Systems: A Review

Application of Carbon Fiber‐Reinforced Ceramic Composites in Active Thermal Protection of Advanced Propulsion Systems: A Review

Strategically Designed Hyperbranched Polyglycerol as an Efficient Integrated Additive for Hydrocarbon Fuels

Improve the thermal performance of precooler by enhancing the utilization of chemical heat sink: Refined design method and characteristic analysis

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