My watch list  

Thermal flywheel effect

The thermal flywheel effect, sometimes also referred to as "Thermal Momentum", is a term used to describe the property of a material to remain at a given temperature. It is generally applied to buildings or construction materials. This is distinct from a materials insulative value. A building's average internal temperature can stay stable much longer due to the thermal flywheel effect.

Materials, higher to lower "flywheel effect"

  1. Packed Earth
  2. Brick
  3. Water
  4. Hardwood lumber or timbers
  5. Softwood & construction lumber
  6. Steel
  7. Insulation
  8. Air
  9. Aluminum

This is only a general classification, as the quantity (mass) and thermal conductivity, and arrangements of materials all have an effect on this.

See also


  • Holloway on solar design
  • evaluating compressed earth block walls
  • U.S. DOE, Building Technologies, Building Envelope
  • Principles of Eco Design
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Thermal_flywheel_effect". A list of authors is available in Wikipedia.
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE