The sum of the internal energy of a body and the product of its volume multiplied by the pressure. Gives off heat. A process is said to be exothermic when it releases heat. Multi-layer insulation blankets use first surface mirrors for infrared head reflection. The most common metal used is aluminum, followed by gold and on rare occasion, silver.
All metals have low emittances.
Aluminized polyester curbs insulation blanket costs for large surfaces. Higher temperature requirements or non-burning material requirements dictate a polyimide substrate. A body which can absorb thermal energy. A finned piece of metal used to dissipate the heat of solid state components mounted on it. The process of thermal energy flowing from a body of high energy to a body of low energy.