DSpace at ICSE : Electrical conductivity of Colorado oil shale to 900 °C (Abstract only)

ICSE

Title:	Electrical conductivity of Colorado oil shale to 900 °C (Abstract only)
Authors:	Duba, Al
Issue Date:	Apr-1982
Publisher:	Lawrence Livermore National Laboratory
Citation:	Fuel, Volume 62, Issue 8, August 1983, Pages 966–972, http://dx.doi.org/10.1016/0016-2361(83)90172-2
Type:	report
Pages:	28
Abstract:	The electrical conductivity of oil shale from the Anvil Points Mine, Colorado, was measured to temperatures greater than 900°C with conductance bridges operating at frequencies from 100 to 100,000 Hz. The conductivity of low, intermediate, and high grade oil shales (15, 124, and 233 ml/kg, respectively) is dependent on water content up to approximately 100°C. At about 120°C, values of conductivity around 10 -7 S/m are observed for all grades. A strong, time dependent, increase in conductivity, beginning around 400°C, marks the loss of light hydrocarbons and the formation of a conductive char. The frequency dependence of conductivity --slightly less than a decade increase in conductivity per decade increase in frequency over the temperature range 100°C to 400°C-- vanishes at temperatures near 500°C. At temperatures between 600°C and 800°C, the conductivity of these oil shales reaches a maximum value which is as much as 10 times larger than the conductivity near 250°C.
URI:	http://ds.heavyoil.utah.edu/dspace/handle/123456789/7068
Appears in Collections:	ICSE Digital Library

Files in This Item:

There are no files associated with this item.