Coupling optimization of composite insulation and vapor-cooled shield for on-orbit cryogenic storage tank

Jiang, Wenbing; Zuo, Zhongqi; Huang, Yonghua; Wang, B.; Sun, Peijie; Li, P.

doi:10.1016/j.cryogenics.2018.10.008

Cited by 43 publications

(15 citation statements)

References 12 publications

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“…Boil-off loss targets may require advances in vacuum insulation or mitigation strategies [34]. j. LH2 bunkered cost includes costs of H2 production, delivery, and refueling [35]. Reported minimum, average, and maximum delivered LH2 costs in SARTA FCEB demonstration projects are $5/kg, $5.14/kg, and $5.88/kg, respectively [36].…”

Section: Cmentioning

confidence: 99%

Hydrogen for Maritime Applications

Kopasz¹,

Krause²,

Ahluwalia³

et al. 2022

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Section: Cmentioning

confidence: 99%

Hydrogen for Maritime Applications

Kopasz¹,

Krause²,

Ahluwalia³

et al. 2022

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“…For this, the self-evaporating vapor cooled shield (VCS) is further installed in the abovementioned composite thermal insulation system to recover the cold energy of the evaporated low-temperature GH 2 . [36][37][38] In this article, a thermodynamic calculation model of the composite insulation system was established, and the influence of various factors, such as VCS position, vacuum degree, storage pressure, and ambient temperature, on the insulation performance was analyzed. The results show that the HGMs, MLI, and VCS composite insulation system proposed in this article not only effectively recover the low-temperature hydrogen cold energy to be discharged, but also maintain good insulation performance under different vacuum conditions.…”

Section: Doi: 101002/ente202000591mentioning

confidence: 99%

A Novel Composite Insulation System of Hollow Glass Microspheres and Multilayer Insulation with Self‐Evaporating Vapor Cooled Shield for Liquid Hydrogen Storage

Yang

et al. 2020

Energy Tech

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The efficient storage method of hydrogen energy is a major concern in its practical application. Compared with other hydrogen storage methods, liquid hydrogen (LH2) storage has the advantages of high energy storage density and low storage pressure. However, the temperature of LH2 is significantly lower than room temperature, and heat leakage causes it to evaporate continuously. Thus, an efficient thermal insulation technology is a key to LH2 storage. Herein, based on the traditional multilayer insulation (MLI), a novel insulation system combining hollow glass microspheres (HGMs) that is not sensitive to vacuum with self‐evaporating vapor cooled shield (VCS) that can recover hydrogen cold‐energy is introduced and analyzed. Based on the layer‐by‐layer method, a thermodynamic calculation model is established, and related experimental verification is completed. The results show that the heat leakage of the proposed insulation system is decreased by 45% under high vacuum (10−3 Pa) and 81% under low vacuum (1 Pa) compared with the traditional MLI. The influences of the VCS position, LH2 storage pressure, hot boundary temperature, and vacuum on the thermal insulation performance of the composite thermal insulation system are also analyzed.

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“…Moreover, it has been verified that cooling only 1/4 the height of the tank skirt is more effective than cooling the entire skirt. A numerical analysis of the vapor cooling channels within MLI showed that the optimum installation of VCS in MLI can reduce the heat flux into the tank by 60% (Jiang et al, 2018). VSC is also applicable to support structures and fill and drain lines of the tank (Eberhardt et al, 1981).…”

Section: Introductionmentioning

confidence: 99%

Comparison of vapor cooling characteristics of a triply periodic minimal surface and other channel geometries

FUKUZAKI

KINEFUCHI

Umemura

et al. 2023

Mechanical Engineering Journal

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Vapor cooling shield is a key technology for long-term cryogenic propellant storage in space. Cooling channels with a triply periodic minimal surface embedded inside are expected to improve its cooling performance. Herein, a cooling channel with a triangle cross-section embedded gyroid structure, a type of the triply periodic minimal surface structure, was additively manufactured. The pressure drop and heat transfer performances of the channel were experimentally measured using liquid nitrogen vapor. Furthermore, in addition to the gyroid-embedded channel, three channels with different cross-sections were fabricated for comparison: circular, triangle, and triangle with a step/groove on the bottom. The gyroid-embedded channel exhibited unique characteristics, with a thermal conductance that was approximately 40% higher than that of the channel with a simple triangle crosssection, but an excessive pressure drop of approximately 50 times higher than that of the other cross-sections. This denotes that strong vortex and turbulence and the flow separation cause excess pressure drop in the gyroidembedded channel. The pressure drop characteristic of the gyroid-embedded channel against the Reynolds number completely differed from that of the other channels, and the pressure drop of the gyroid-embedded channel can be estimated assuming analogy with particle packed beds.

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Coupling optimization of composite insulation and vapor-cooled shield for on-orbit cryogenic storage tank

Cited by 43 publications

References 12 publications

Hydrogen for Maritime Applications

Hydrogen for Maritime Applications

A Novel Composite Insulation System of Hollow Glass Microspheres and Multilayer Insulation with Self‐Evaporating Vapor Cooled Shield for Liquid Hydrogen Storage

Comparison of vapor cooling characteristics of a triply periodic minimal surface and other channel geometries

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