What is the difference between conduction and convection through windows?
There are several terms that homeowners can familiarize themselves with so they can better understand the science behind energy efficient windows.
They are conduction, radiation, convection, air infiltration, and radiant heat loss.
Conduction: The direct transfer of heat through a window to the outside.
Radiation: The movement of heat through infrared energy through the glass panes.
Air Infiltration: The amount of air that seeps between the window frame and sash.
Convection: When warm air from inside the home meets a cold window, a chilly, circulatory draft can occur
Radiant Heat Loss: Clear glass absorbs interior heat and radiates it outdoors. Low E glass coatings greatly reduce radiant heat loss.
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