Air cooling element, method for operating the same, and an air cooling arrangement

An air-cooling arrangement comprising:

• at least one row of air-cooling elements, each of the air-cooling elements including a chamber having at least one air inlet and bounded on one side by a cooling wall, the cooling wall of each air-cooling element being made of a substantially impermeable material and including a plurality of micro-holes distributed over its area so that a free cross-section of the cooling wall is less than 2% of its area, and an antechamber having at least one air connection and connected to the chamber by the at least one air inlet;
• and
• wherein the antechamber of an outermost air-cooling element is connected to an air supply line while the antechamber of each further air-cooling element is connected in each case with the antechamber of the preceding air-cooling element by an essentially air-tight connection.

A method for air-cooling comprising:

• providing a chamber housing having an air inlet arranged to receive air and a cooling wall made of a substantially impermeable material;
• and
• dispensing air from the chamber housing and through less than 2% of the surface area of the cooling wall.

A method for air-cooling comprising:

• providing a chamber having at least one air inlet and bounded on one side by a cooling wall made of a substantially impermeable material and having a plurality of micro-holes distributed over its area so that its free cross-section is less than 2% of its area;
• and
• dispensing air from the chamber and through the plurality of micro-holes of the cooling wall so as to provide a nominal air flow rate of at least 45 m/h, and generate a highly turbulent air flow and a heat transfer coefficient of at least 50 W/m2K on the inside of the cooling wall.