NDLI: Simultaneous Measurement of Thermal Diffusivity and Thermal Conductivity by Means of Inverse Solution for One-Dimensional Heat Conduction (Anisotropic Thermal Properties of CFRP for FCEV)

Content Provider	Springer Nature Link
Author	Kosaka, Masataka Monde, Masari
Copyright Year	2015
Abstract	For safe and fast fueling of hydrogen in a fuel cell electric vehicle at hydrogen fueling stations, an understanding of the heat transferred from the gas into the tank wall (carbon fiber reinforced plastic (CFRP) material) during hydrogen fueling is necessary. Its thermal properties are needed in estimating heat loss accurately during hydrogen fueling. The CFRP has anisotropic thermal properties, because it consists of an adhesive agent and layers of the CFRP which is wound with a carbon fiber. In this paper, the thermal diffusivity and thermal conductivity of the tank wall material were measured by an inverse solution for one-dimensional unsteady heat conduction. As a result, the thermal diffusivity and thermal conductivity were $$2.09 \times 10^{-6}\hbox { m}^{2}{\cdot }\hbox {s}^{-1}$$ and $$3.06\hbox { W}{\cdot }\hbox {m}{\cdot }^{-1}\hbox {K}^{-1}$$ for the axial direction, while they were $$6.03 \times 10^{-7}\,\hbox {m}^{2}{\cdot }\hbox {s}^{-1}$$ and $$0.93\,\hbox {W}{\cdot }\hbox {m}^{-1}{\cdot }\hbox {K}^{-1}$$ for the radial direction. The thermal conductivity for the axial direction was about three times higher than that for the radial direction. The thermal diffusivity shows the same trend in both directions because the thermal capacity, $$\rho c$$ , is independent of direction, where $$\rho $$ is the density and c is the heat capacity.
Starting Page	2590
Ending Page	2598
Page Count	9
File Format	PDF
ISSN	0195928X
Journal	International Journal of Thermophysics
Volume Number	36
Issue Number	10-11
e-ISSN	15729567
Language	English
Publisher	Springer US
Publisher Date	2015-09-04
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Carbon fiber-reinforced plastic (CFRP) Fuel cell electric vehicle One-dimensional inverse solution Thermal conductivity Thermal diffusivity Condensed Matter Physics Mechanics Industrial Chemistry/Chemical Engineering Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics

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