geothermal resource potential of the great basin province in western utah mason edwards dept. of...
TRANSCRIPT
Geothermal Resource Potential of the Great Basin Province
in Western Utah
Mason Edwards Dept. of Geology & Geophysics
University of Utah
(ecoki.com, 2010)
Study Motivation
(Henrikson, 2001)
High Temperature at depth
High ‘q’ (90 mWm-1)Low ‘k’ basin fill
0
50
100
150
200
250
300
Te
mp
era
ture
( C
)
Temperature Requiredfor Geothermal Applications
DirectUse
PowerGeneration
Aquaculture
Greenhouses
DryingTimber
Evaporationof Solutions
BinarySystems
CombinedCycle
CondensingTurbines
T
z
T0 T1 T2
k1
k2
q0
Determining Heat Flow & Temperature
Case 1:• q0 = 90 mWm-2
• z1 = 2 km• T0 = 10 °C• k1 = 3 Wm-1K-1
Case 2:• q0 = 90 mWm-2
• z1 = 2 km• T0 = 10 °C• k1 = 1.5 Wm-1K-1
T(2 km) = 70 °C T(2 km) = 130 °C
Fourier’s Law:
T(z) = T0 + q0Δzi
kiΣ
q = k T∇
Measuring Thermal Conductivity
Divided Bar Method• Known Standard ‘k’• Measured Temperatures• No Lateral Heat Loss
T1
T2
Th
Tc
ΔT1
ΔT2
ΔT3
Sample Cell
k1 l1
lsample
l3k3
q1 = k1
ΔT1
l1
qsample = ksampleΔT2
lsample
q1 = qsample
ksample = k1 ΔT1
l1ΔT2
lsample
Questions?