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India: Rising Diesel Prices Boost Attractiveness of Solar Thermal

Submitted by Baerbel Epp on April 19, 2013

India’s government announced at the beginning of this year that it would gradually increase the price of diesel by INR 1 each month for the following 10 months. The government is aiming to bring retail prices in India on a par with international crude prices, in order to reduce the subsidy burden on the public budget. The chart shows that the industrial sector accounts for 8% of the country’s entire diesel consumption. The rising prices will certainly hurt the industries which have already paid much for electricity. Solar thermal technologies, however, can replace these expensive diesel systems: with an average of 300 clear sunny days per year, solar has a nature-given advantage over other energy sources.
Source: Government of India

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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