|
in Earth's Crust* |
k - All**
Thermal Conductivity |
k - 80%***
Thermal Conductivity |
c
p
Specific Heat |
Density |
Thermal Diffusivity |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Igneous Rocks | |||||||
Granite
(10% Quartz) |
|
|
|
|
|
|
|
Granite
(25% Quartz) |
|
|
|||||
Amphibolite |
|
|
|
|
|||
Andesite |
|
|
|
|
|
||
Basalt |
|
|
|
|
|||
Gabbro
(US Cen. Plains) |
|
|
|
|
|||
Gabbro
(US Rocky Mtns) |
|
|
|||||
Diorites |
|
|
|
|
|
|
|
Grandiorites |
|
|
|
|
|||
Seditmentary Rocks | |||||||
Claystone |
|
||||||
Dolomite |
|
|
|
|
|
||
Limestone |
|
|
|
|
|
||
Rock Salt |
|
|
|
||||
Sandstone |
|
|
|
|
|
||
Siltstone | 0.8-1.4 | ||||||
Wet Shale
(25% Quartz) |
|
|
|
|
|
|
|
Wet Shale
(No Quartz) |
|
|
|||||
Dry Shale
(25% Quartz) |
|
|
|||||
Dry Shale
(No Quartz) |
|
|
|||||
Metamorphic Rocks | |||||||
Gneiss |
|
|
|
|
|
|
|
Marble |
|
|
|
|
|
|
|
Quartzite |
|
|
|
|
|||
Schist |
|
|
|
|
|||
Slate |
|
|
|
|
1. H.S. Carslaw and J.C. Jaeger, Conduction of Heat
in Solids. Oxford: Claremore Press, 1947.
2. L.R. Ingersoll, O.J. Zobel, and A.C. Ingersoll, Heat
Conduction: with Engineering and Geological Applications, 2nd ed. McGraw-Hill,
New York, 1954.
3. S.P. Kavenaugh, "Simulation of Ground-Coupled Heat
Pumps with an Analytical Solution," Proceedings of the ASME International
Solar Energy Conference. New York: American Society of Mechanical
Engineers, 1992.
4. Closed-Loop/Ground-Source Heat Pump Systems Installation
Guide. NRECA Research Project 86-1. Oklahoma State University.
1988.