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India: Less than One Year to Pay Back Textile Industry’s Solar Preheating

Submitted by Baerbel Epp on August 11, 2012

Coimbatore located in the southern Indian state of Tamil Nadu is called the "Manchester of South India" because of its large textile industry, which is fed by the surrounding cotton fields. More than 150 medium and large textile companies reside in and around Coimbatore.The boilers used in these factories consume a lot of fuel, with temperature requirements of up to 80°C. This makes it ideal to use solar collector fields as pre-heating for the existing boilers. Thanks to good frame conditions, the systems can be paid back in less than one year, as the example of the Amudham Sizing Mill shows. Sizing is a preparatory process for weaving. The region’s hard water forces the companies to use systems based on vacuum tube (see photo) to overcome problems of calcification.
Photo: Jaideep Malaviya

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