the developed surface area or specific surface area (m2·g–1) of the material.

This means 3g of activated carbon can have the surface area of a football field.

elements of which the surface area or the volume does not exceed respectively:

The latter can be made of a heat-conducting material whose developed surface is wetted with a liquid (11).

The developed surface of the PVC membrane is about 149m², the volume of air content of 47m3.

The sheets are therefore superimposed on a surface area of 1,433.979 m² or 33.328 % of the developed surface area of the envelope, which is 4,302.6498 m² (1.93 % higher than the covered surface).

Said accumulator (3) can be made of thermoconductive material, the expanded surface of which is moistened with an evaporating liquid.

Activated charcoal can have a surface area greater than 1000 m2/g which means that 3 g of activated charcoal can have the surface area of a football field!

Activated charcoal can have a surface area greater than 1000 m2/g which means that 3 g of activated charcoal can have the surface area of a football field!

Activated charcoal can have a surface area greater than 1000 m2/g which means that 3 g of activated charcoal can have the surface area of a football field!

Each of the sound-muffling elements takes the form of a sealed liquid-saturated vapour system with a phase boundary formed on the developed surface of the heat accumulator (6).

A solid material can be used as the heat accumulator (3) and its developed surface is wetted with the system liquid (4) or is formed by the system liquid itself.