Being a student of Visvesvaraya (National Institute of Technology), the thought of harnessing energy at a micro level never ceases to amaze me!
Therefore like the idiot that I am I thought I could fill my quota of the day by looking at regenerative braking only to be prevented by a decades old presentation on "High-Speed Rolling Stock- Japan", where curves are presented of how much energy is recovered !!
Refer link for details -
High Speed Rolling Stock - Japan
Tough guys, these Japanese, I say!
So I prayed to Lord Visveswarayya, and lo and behold is the idea of the day -
At 320 kmph , average speed there should be enough wind velocity in the wake of every bullet train to harness the energy in into a 5-50 KW wind turbine (the wind velocity is going to be huge!!) like the one shown below-
( i didn't get better picture in Images section of Google for my idea, but I think you will get the drift! the actual configuration will be longer, shorter and more like an aeroplane turbine!!)
Putting one turbine at every length +10 meters of a train and with a train passing every 15 minutes, we are looking at some generation potential - i would think about 0.5-5 MW capacity and i could be off by orders of magnitude.(I am very bad at these phasor calculations where one needs to integrate areas under peak capacities and zero capacities over defined time intervals!!)
Very small capacity in terms of teh gigawatt plans of the nation, but with eddy dissipation and staggered configurations, this will keep a host of engineers busy studying the aerodynamic profiles in the immediate wake with a lateral shift of say 1-3 meters!!
Therefore like the idiot that I am I thought I could fill my quota of the day by looking at regenerative braking only to be prevented by a decades old presentation on "High-Speed Rolling Stock- Japan", where curves are presented of how much energy is recovered !!
Refer link for details -
High Speed Rolling Stock - Japan
Tough guys, these Japanese, I say!
So I prayed to Lord Visveswarayya, and lo and behold is the idea of the day -
At 320 kmph , average speed there should be enough wind velocity in the wake of every bullet train to harness the energy in into a 5-50 KW wind turbine (the wind velocity is going to be huge!!) like the one shown below-
Putting one turbine at every length +10 meters of a train and with a train passing every 15 minutes, we are looking at some generation potential - i would think about 0.5-5 MW capacity and i could be off by orders of magnitude.(I am very bad at these phasor calculations where one needs to integrate areas under peak capacities and zero capacities over defined time intervals!!)
Very small capacity in terms of teh gigawatt plans of the nation, but with eddy dissipation and staggered configurations, this will keep a host of engineers busy studying the aerodynamic profiles in the immediate wake with a lateral shift of say 1-3 meters!!
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