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GEOLOGI PANAS BUMI

Ali Okto, ST., MT

Fakultas Ilmu Dan Teknologi Kebumian

Universitas Halu Oleo

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FAKTOR PENILAIAN

NILAI =2 + 3 + 5

10

FAKTOR NILAI NILAI

86-100 A

76-85 B

86-75 C

56-65 D

NILAI =2 + 3 + 4 + 6

15

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OUTLINE:

PENGENALAN ENERGI PANAS BUMI DAN PENGGUNAANNYA DI

INDONESIA DAN DUNIA

TEKTONIK LEMPENG DAN KEGUNUNGAPIAN

TERJADINYA SISTEM PANAS BUMI DAN BERBAGAI MACAM

DEFINISI DAN TERMINOLOGI

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Pengertian:

Panas bumi adalah sumber energi panas yang terkandung didalam air panas, uap air, dan batuan bersama mineral ikutan

dan gas lainnya yang secara genetik semuanya tidak dapat 

dipisahkan dalam suatu sistem panas bumi dan untuk 

pemanfaatannya diperlukan proses penambangan (UU No.27/2003)

Sistem Panas Bumi:

1) Heat Sources2) Reservoir dan Clay Cap

3)   Adanya Hydrology System

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1 Origins of geothermal energy

 – 1. Left-over heat from the

time of the accretion ofthe earth (4.6 By BC)(30%)

 – 2. heat generated by the

decay of the long-livedradioactive isotopes ofuranium (U238, U235),thorium (Th232) andpotassium (K40) (70%).

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1 Origins of geothermal energy

Temperature distribution in the earth

 Temperatures in the earth Geothermal gradient in the upper 150km

dT/dz ~ 30 oC/km

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1 Origins of geothermal energy

Mechanisms of heat transport in the earth

(2) Heat transport by

convection

Mantle convection driving 

the plates

Numerical simulation of

Mantle convection

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1 Origins of geothermal energy

The earth’s thermal regime and relation with plate tectonics

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1 Origins of geothermal energy

The earth’s thermal regime and relation with plate tectonics

Plates, plate boundaries and distribution of volcanoes across the earth

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1 Origins of geothermal energy

Plate tectonics and geothermal fields

 World pattern of plates, oceanic ridges, oceanic trenches, subduction zones, and geothermal fields.http://www.geothermal-energy.org/105,interactive_map.html

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2. Classification of geothermal systems/reservoirs

 The “ideal geothermal reservoir”

= high temperatures + water= steam!!!

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2. Classification of geothermal systems/reservoirs

 Thermal processes in an “ideal geothermal reservoir” resulting in theformation of hot steam

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Go Green Indonesia !energ i hijau , energ i masa depan 

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