Indian Railways seems to be considering to use the solar energy to power its air conditions coaches; had asked Indian Institute of Technology, Madras to find ways for the same.
Indian Railways, the largest railway system of the world, is seriously considering to use innovative technologies to tap alternative/renewable sources of energy and to reduce the dependence on fossil fuel and the power grid.
There are two ways to source power for air conditioning (i) power cars that use diesel and (ii) AC coaches that generate power from the speed of a train. Currently, power cars are attached to trains like Shatabdi Express, Duronto and double decker trains while AC coaches of other trains have self-generating systems.
According to the Indian Railways, it has approached IIT Madras to find ways to tap solar power and use it for interior lighting and air conditioning and signed an MoU for this purpose last month.
Integral Coach Factory has initiated preliminary discussions with IIT Madras to work out different modalities to develop a feasible model to use solar power in running trains which will draw power from the sub for interior lighting and cooling.
If the project is successful, the railways may be able to dispense with power cars.
More literature on this topic...
http://timesofindia.indiatimes.com/articleshow1/21608984.cms
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