Thermal conductivity, diffusivity and expansion of Avery Island salt at pressure and temperature

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Preliminary data on the thermal properties of a coarse-grained rock salt from Avery Island, Louisiana, indicates that hydrostatic pressure to 50 MPa has little effect on the thermal conductivity, diffusivity and linear expansion at temperatures from 300 to 573 K. The measurements were made in a new apparatus under conditions of true hydrostatic loading. At room temperature and effective confining pressure increasing from 10 to 50 MPa, thermal conductivity and diffusivity are constant at roughly 7W/mK and 3.6 x 10/sup -6/ m/sup 2//s, respectively. At 50 MPa and temperature increasing from 300 to 573K, both conductivity and diffusivity drop by ... continued below

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Pages: 18

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Durham, W.B.; Abey, A.E. & Trimmer, D.A. January 4, 1980.

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  • Lawrence Livermore Laboratory
    Publisher Info: California Univ., Livermore (USA). Lawrence Livermore Lab.
    Place of Publication: Livermore, California

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Description

Preliminary data on the thermal properties of a coarse-grained rock salt from Avery Island, Louisiana, indicates that hydrostatic pressure to 50 MPa has little effect on the thermal conductivity, diffusivity and linear expansion at temperatures from 300 to 573 K. The measurements were made in a new apparatus under conditions of true hydrostatic loading. At room temperature and effective confining pressure increasing from 10 to 50 MPa, thermal conductivity and diffusivity are constant at roughly 7W/mK and 3.6 x 10/sup -6/ m/sup 2//s, respectively. At 50 MPa and temperature increasing from 300 to 573K, both conductivity and diffusivity drop by a factor of 2. Thermal linear expansion at 0 MPa matches that at 50 MPa, increasing from roughly 4.2 x 10/sup -5//K at 300 K to 5.5 x 10/sup -5/ at 573 K. The lack of a pressure effect on all three properties is confirmed by previous work. Simple models of microcracking suggest that among common geological materials the lack of pressure dependence is unique to rock salt.

Physical Description

Pages: 18

Notes

Dep. NTIS, PC A02/MF A01.

Source

  • 16. international thermal conductivity conference, Chicago, IL, USA, 7 Nov 1979

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  • Report No.: UCRL-83789
  • Report No.: CONF-791134-10
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 5719518
  • Archival Resource Key: ark:/67531/metadc1093573

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 4, 1980

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • May 8, 2018, 8:45 p.m.

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Durham, W.B.; Abey, A.E. & Trimmer, D.A. Thermal conductivity, diffusivity and expansion of Avery Island salt at pressure and temperature, article, January 4, 1980; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc1093573/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.