Geothermal and Pakistan
Definition
• Geo means earth and thermal means heat
• Geothermal power is the energy derived from the heat of the Earth's core.
• Geothermal power is the energy derived from the heat of the Earth's core.
Process
• Geothermal energy is produced from Earth's heat absorbed in underground water (such as hot springs).
• The holes are drilled into the land to pump out hot water.
• This hot water or steam is used to drive turbines to produce electricity.
• The holes are drilled into the land to pump out hot water.
• This hot water or steam is used to drive turbines to produce electricity.
Advantages
• It is renewable source of energy
• It provides a constant supply
• It is relatively pollution free
• If properly developed, it can offer renewable and sustainable energy.
• It provides a constant supply
• It is relatively pollution free
• If properly developed, it can offer renewable and sustainable energy.
Disadvantage
• It has high cost of construction of a power station
• It has a high cost of maintenance
• It has limitation to volcanic areas therefore it has the threat to power stations from eruptions and earthquakes.
• It has a high cost of maintenance
• It has limitation to volcanic areas therefore it has the threat to power stations from eruptions and earthquakes.
Geothermal Potential in Pakistan
Plate margins
• Geothermal resources of the world are within areas of crustal weakness such as plate margins and centers of volcanic activity.
• Pakistan seems to have geothermal potential because a plate margin passes through Pakistan and it lies in an earthquake zone.
• Pakistan seems to have geothermal potential because a plate margin passes through Pakistan and it lies in an earthquake zone.
UN survey Report
• According to a geotectonic framework survey conducted by United Nations and Italian experts, Pakistan has a potential of commercially exploitable sources of geothermal energy in the Himalaya region and areas in Baluchistan Plateau.
Presence of hot springs
• The presence of a fairly large number of hot springs in different parts of the country has also been identified by some survey teams.
Study requirements for geothermal exploitation
Presence of hot springs
• The presence of a fairly large number of hot springs in different parts of the country has also been identified by some survey teams.
Study requirements for geothermal exploitation
Geothermal exploitation requires an integrated study based on:
• identification of geothermal sites• estimation of the size of the resource and economic cost involved in exploitation of the resource
• determination of heat content of fluids that will be discharged by wells in the geothermal field
• After completing a positive feasibility study, geothermal projects may help to solve the energy problem of Pakistan.
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