The process releases an enormous amount of heat, which must somehow be removed. For this purpose Colt has provided a gravity ventilation scheme that covers the total 1,800 metres of length of the two buildings.
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The electrolysis hall of Sør Norge Aluminium in Norway was equipped with a roofhouse with mechanical ventilation. This was outdated, and the decision was made to remove the roofhouse and replace the mechanical ventilation system with a gravity ventilation system.
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Keeping the need for additional constructional provision to a minimum, Colt replaced the ventilation openings in this building with gravity ventilation units, type Colt Labyrinth.
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Colt was required to replace existing mechanical HVAC equip-ment in response to changing needs, and supplied a scheme of natural / gravity ventilation. This was attractive to the client since the equipment that had been installed earlier required extensive maintenance...
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There are extreme conditions at the Boguchany Smelter Complex. Colt carried out a survey and technical calculations, and proposed a scheme of Labyrinth gravity ventilators. Each of the four potrooms with a length of 1,200m will be equipped with a 7m wide Labyrinth unit.
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