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Tom Morris

May 5, 2014
01:31

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will the energy saved by bikers not riding cars equal or exceed the energy required to run the wind generators? Seems like a neat trick but not practical.

Paul Wolfram

May 16, 2014
07:04

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It seems that the tunnels and the associated infrastructure will be very energy and material intensive and hence construction may cause a significant amount of CO2 emissions again. Could exisiting infrastructure such as old unused pipes be converted to be used as bicycle wind tunnels? That would save a lot of material and energy. New built tunnels might be feasible in very specific situations though, e.g. in highly polluted cities. Did you think of a specific location where you would like to see this project being initiated?

Climate Colab

Aug 5, 2014
08:31

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The concept would likely have little impact on GHG emissions but is interesting. The greatest benefits would likely come from reduced obesity and shorter commuting times in congested cities. Pumping air through tubes for bikes would likely be net thermodynamic negative. The air would have significant flow losses and the gain from the bikes would be negligible.
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