Solubility of Solid n-Butane and n-Pentane in Liquid Methane

1960 ◽  
pp. 509-515 ◽  
Author(s):  
G. P. Kuebler ◽  
G. McKinley
Keyword(s):  
Liquid Methane

Brillouin scattering study of liquid methane under high pressures and high temperatures

2010 ◽  
Vol 133 (4) ◽  
pp. 044503 ◽  
Author(s):  
Min Li ◽  
Fangfei Li ◽  
Wei Gao ◽  
Chunli Ma ◽  
Liyin Huang ◽  
...  
Keyword(s):  
High Temperatures ◽  
High Pressures ◽  
Brillouin Scattering ◽  
Scattering Study ◽  
Liquid Methane

Mechanisms for the far-infrared absorption in liquid methane

2009 ◽  
Vol 130 (12) ◽  
pp. 124504
Author(s):  
N. B. Huamán Lozano ◽  
H. Stassen
Keyword(s):  
Infrared Absorption ◽  
Far Infrared ◽  
Liquid Methane

Comparative study on thermodynamic characteristics of composite thermal insulation systems with liquid methane, oxygen, and hydrogen

2021 ◽  
pp. 1-18
Author(s):  
Xiafan Xu ◽  
Jianpeng Zheng ◽  
Hao Xu ◽  
Liubiao Chen ◽  
Junjie Wang
Keyword(s):  
Comparative Study ◽  
Thermal Insulation ◽  
Thermodynamic Characteristics ◽  
Calculation Model ◽  
System Structure ◽  
Insulation System ◽  
Optimal Position ◽  
Heat Leakage ◽  
Cryogenic Liquids ◽  
Liquid Methane

Abstract Composite passive insulation technology has been proved to be an effective method to reduce heat leakage into the cryogenic storage tank. However, the current related research mainly focused on liquid hydrogen (LH2). The thermophysical properties of different cryogenic liquids and the thermal insulation materials at different temperatures are significantly different, so whether the results related to LH2 are applicable to other cryogenic liquids remains to be further determined. In fact, the insulation technology of LH2 itself also needs further study. In this paper, a thermodynamic calculation model of a composite insulation system including hollow glass microspheres (HGMs), multilayer insulation (MLI), and self-evaporating vapor cold shield (VCS) has been established. The accuracy of the calculation model was verified by the experimental results, and a comparative study on thermodynamic characteristics of the composite thermal insulation system with liquid methane, liquid oxygen (LO2), and LH2 was carried out. The results show that the heat leakage reduction of the proposed system for liquid methane, LO2 and LH2 is 25.6%, 29.7% and 64.9% respectively compared to the traditional SOFI+MLI system (1*10−3 Pa). The type of liquid and the insulation system structure has a relatively large influence on the VCS optimal position. While for a specific insulation system structure, the insulation material thickness, storage pressure, and hot boundary temperature have a weak influence on the VCS optimal position.

On the Mobility of Quasifree Electrons in Liquid Methane

1972 ◽  
Vol 50 (20) ◽  
pp. 3379-3380 ◽  
Author(s):  
Kenji Fueki
Keyword(s):  
Theoretical Estimate ◽  
Calculated Energy ◽  
Liquid Methane ◽  
Liquid Alkanes

A theoretical estimate has been made of the mobility and energy of quasifree electrons in liquid methane. It is shown that the calculated mobility is in agreement with the measured mobility and that the calculated energy is also consistent with a qualitative correlation between the mobility and energy of quasifree electrons in liquid alkanes.

scholarly journals A Densified Liquid Methane Delivery System for the Altair Ascent Stage

2010 ◽  
Author(s):  
Wesley Johnson ◽  
Thomas Tomsik ◽  
Todd Smudde ◽  
Andrew Schnell ◽  
Mark Femminineo
Keyword(s):  
Delivery System ◽  
Liquid Methane

Yields of Free Ions in the X Radiolysis of Some Simple Saturated and Unsaturated Hydrocarbon Liquids: Effects of Molecular Structure and Temperature

1971 ◽  
Vol 49 (22) ◽  
pp. 3657-3664 ◽  
Author(s):  
M. G. Robinson ◽  
P. G. Fuochi ◽  
G. R. Freeman
Keyword(s):  
Molecular Structure ◽  
Interaction Model ◽  
Unsaturated Hydrocarbon ◽  
The Other ◽  
Coulombic Interaction ◽  
Secondary Electrons ◽  
Free Ions ◽  
Free Ion ◽  
Liquid Methane ◽  
Hydrocarbon Molecules

Pulse techniques were used at temperatures ranging from 120 to 293 °K. A quasifree electron conductance transient (k/u overshoot) was observed in liquid methane, but not in ethane, propane, cyclopropane, ethylene, propylene or butene-1. The free ion yield in methane, Gfi = 0.8 at 120 °K, is much larger than those in the other liquids, which at 183°K are: ethane, 0.13; propane, 0.076; cyclopropane, 0.04; ethylene, 0.017; propylene, 0.04; butene-1, 0.027. The activation energies of free ion formation are, in kcal/mol: ethane, 0.6; propane, 0.8; ethylene, 0.5; propylene, 1.0; butene-1, 1.0. The results are interpreted in terms of the coulombic interaction model. The distances that the secondary electrons penetrate the liquid away from their parent ions are greater when the hydrocarbon molecules are more sphere-like, and are reduced by the presence of a π bond in the molecule. Cyclopropane behaves somewhat like an olefin in this regard, a fact that is explained by the unusual bonding in the C3 ring. In the present liquids the only ionization events that contribute appreciably to the free ion yield are those in which the electron penetrates [Formula: see text] from the parent ion.

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