What is Geothermal Energy?

Wikipedia’s definition states:  “Geothermal energy (from the Greek roots geo, meaning earth, and thermos, meaning heat) is power extracted from heat stored in the earth. …”

THINK OF YOUR YARD AS A RECHARGEABLE SOLAR BATTERY!


The US Environmental Protection Agency states that geothermal heating & cooling systems are ” the most energy efficient, environmentally clean, and cost effective space conditioning systems available today.”

What are the benefits of Geothermal heating & cooling?

  • 1) Uses 25% to 50% less electricity.
  • 2) Reduces emissions up to 40%.
  • 3) Improves humidity control.
  • 4) Life expectancy of heat pump is 20 – 30 years.
  • 5) Equipment is extremely quiet.
  • 6) No ugly equipment sits outside the home.
  • 7) Generates free hot water.
  • 8) Reduces carbon footprint.
  • 9) Does not produce carbon monoxide.
  • 10) Is better for the environment.

IS GEOTHERMAL THE RIGHT CHOICE FOR YOU?

Investing in geothermal is a great investment.  The Federal Government offers a 30% tax credit until 2016.  How long you plan to stay in your home can play an important part on your decision to install geothermal equipment.  Use this savings calculator to help you decide…click here.

WHAT IS THE SCIENCE BEHIND GEOTHERMAL?

Understanding a few natural laws of science helps us understand how a geothermal heat pump works. Heat is thermal energy that is transferred between two bodies because of a difference in temperature. Heat transfer is the process of increasing the kinetic energy of a material’s particles from a material of higher temperature to one of lower temperature. The actual law is called “The Second Law of Thermodynamics.”

To put it simple “HOT TRAVELS TO COLD.”

Looking at how a refrigerator works will help explain how a heat pump works….Learn more…

HOW DOES A GEOTHERMAL HEAT PUMP WORK?

A Geothermal Heat Pump does not create heat by burning fuel. Instead, it uses the constant temperature of the earth as the source for transferring heat through a series of pipes, called a loop. The loop is installed either in a vertical or horizontal position below the surface of the ground, or it can be submersed in a pond or lake. Water circulates through the loop, gathering heat from the earth and carrying it to the house. Then an electrical compressor and a heat exchanger concentrate the heat from the earth and release it inside the home through the ductwork.

HOW DO YOU EXTRACT THE ENERGY FROM THE EARTH?

The earth collects and absorbs around 48% of the sun’s solar energy. At a depth of around 6′ the earth maintains a constant temperature ranging between 45 – 70 degrees Fahrenheit. So think of your yard as a rechargeable solar battery that is storing energy produced by the sun. A geothermal heating and cooling system extracts that natural energy, stored in the earth, and uses it to heat and/or cool your house. Stored energy is extracted from the earth by using a series of pipes – referred to as the earth loop system which can have different configurations.  Learn more about loop systems….