Friday, August 24, 2012

Introduction to Geothermal Energy

What Is Geothermal Energy?

Geothermal Energy is defined as “energy from the internal heat of the earth”
  • 47% of the incoming radiation from the sun
    is absorbed by the earth
  • The remainder is absorbed by the atmosphere
    or reflected back into space
Translated: Geo-Thermal means “Earth-Heat”
“High Temperature” Geothermal Energy
  • Energy Source for Hot springs and geysers
  • Temperatures exceed 300°F
  • Converted to produce useable heat and electricity


Energy Efficiency – Building Blocks

Step 1 – Reduce Energy Load
  • Site Orientation and Building Arrangement
  • Efficient and Effective Building Envelope
Step 2 – Improve Efficiency of Systems and Equipment
  • HVAC Systems – Geothermal Systems
  • Efficient A/C units, Boilers, Motors, Light Fixtures
  • Lighting Systems – Daylighting
  • Computers and Office Equipment
Step 3 – Effective Building Operations
  • Proper Control – Energy Management Systems
  • Commissioning
  • Operations and Maintenance – Training and Support
  • Leverage Utility Company Rate Schedules
Step 4 – Alternative Energy Sources
  • Renewable Energy Options – Solar, Wind, Biomass

"Low Temperature” Geothermal Energy

  • Heat Energy contained near the surface of the Earth
  • Shallow Earth temperatures fluctuate with seasonal outside air temperature
  • Earth temperature becomes more stable with increasing depth
  • Nearly constant Earth temperatures at depths below 16 feet
  • Earth mean temperature approaches annual average outside air temperature
  • Deep Earth temperatures start to increase at depths below 400 feet – at about 1 °F per 100 feet


Entouchcontrols said...

It's not uncommon to see light Energy savings are achieved by improved compliance and energy policy enforcement.  System reliability and robustness are critical to sustained performance of any energy management solution. The patented MeshScape wireless network is ideal for all types of buildings.

Joven Acosta said...

Very informative and synchronized explanation of geothermal energy!
This is a very good introduction, easy to understand and read!
This is nice way to explain one of geothermal energy's direct uses.

Bulusan Geothermal