The National Institute of Technology, Tiruchi, (NITT) has developed an energy efficient furnace that could prevent environmental pollution during the baking process of glass bangle manufacturing. The model run on furnace oil / liquefied petroleum gas is
ideal for en masse adoption by the hundreds of small scale glass industries in Firozabad, around 40 km from Agra, in order to conform to the Supreme Court guidelines on the prevention of the emission of toxins that was evolved to safeguard the Taj Mahal. The
use of 5 kg of fuel oil by the `NITT furnace' in the place of 5.2 kg of coal and 20.8 kg of wood by the existing muffle furnace results in the saving of Rs.80 an hour in each of the nearly 1,000 such units in Firozabad. The atmosphere is saved from the hourly
addition of 65.5 kg of carbon dioxide and 7 kg of carbon monoxide through each unit. The production rate, with each unit having an output capacity of 1.4 lakh bangles a day, would remain the same. The model, which costs Rs.25,000, has raised hopes that the
imminent closure of the manufacturing units owing to non-adherence to pollution norms could be staved off and the annual turnover of Rs.6,000 crores from the industry retained.