- The net decrease in Btus within a given space, by heat transmission through spaces around windows, doors, etc.
- The loss by conduction, convection, or radiation from a solar collector after its initial absorption.
- A decrease in the amount of heat in a body or region. This may be accomplished, for instance, through the use of heat sinks or fans. Heat is transferred from a hotter body or medium to a colder body or medium.
- The loss of another form of energy through its conversion into heat energy. For instance, losses due the heating effect. Also called dissipation (1).
- synonymheat dissipation