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For further information, please contact:
Atanu Guha
Flakt India Limited
+91 33 228 202 05
Anders Mårtensson
Global Communications Manager
Fläkt Woods Group
+46 36 193 330
anders.martensson@flaktwoods.com
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Fläkt Woods has supplied a specialist-cooling system to an aluminium smelting plant in India, which has helped to reduce the working temperatures for the operatives and increase machinery efficiency.
The Hindalco aluminium plant at Renukut has a number of pot rooms. Here, machines treat the alumina ore to extract melted aluminium metal in a crude state. The high temperatures of between 55°C to 60°C have had a detrimental effect on working conditions and the efficiency levels of electrical drives fitted to each pot.
Fläkt Woods’ technicians were asked to create a way of keeping the temperature of the pot rooms within 35°C to 37°C. The result was two evaporative cooling based ventilation systems. Up to 340,000m3/hr (400,000cfm) of air is passed through each of the units and is distributed to the hot points through ducts.
Internally, water is forced via a high pressure pump, through tubing and 3000 mist nozzles that have an orifice of about 5 micrometres, thereby producing a micro-fine mist. The water droplets that create the mist are so small that they instantly flash evaporate. Flash evaporation can reduce the surrounding air temperature by as much as 35°F (20°C) in just seconds.
Fläkt Woods India manufactured the blower, which features a double-inlet-double-width centrifugal fan of 170,000m3/hr (100,000cfm) capacity, belt-driven by a 55 kW motor.
The complete unit is thermal-insulated with aluminium sheet. The treated supply-air distribution system consists of galvanized steel sheet metal ducting, (of about 4000 m²) and the delivery ends are equipped with supply-air grills with adjustable dampers.
Hindalco Industries Limited, the metal flagship company of the Aditya Birla Group, is an industry leader in aluminium and copper. It is a metal powerhouse with a consolidated turnover in excess of US$ 14 billion. Hindalco is the world's largest aluminium rolling company and one of the biggest producers of primary aluminium in Asia. Its copper smelter is the world's largest custom smelter at a single location.
[Press release 2009-09-04]
Fläkt Woods Group is a leading player in energy-efficient Air Climate for buildings and Air Movement for Industry with a unique range of products for ventilation, air treatment and air diffusion improving indoor air quality and operating costs. Fläkt Woods is one of the largest air handling systems and duct suppliers in Europe and has strong positions in selected countries in the USA, Middle East, Asia and Australia. Fläkt Woods group currently employs more than 3,500 people across Europe, Asia, and the US and reports annual sales of approximately €680M in 75 countries with direct presence in 30 countries worldwide.
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