So earlier this week, I posted a video about a pair of compressed air cars under the heading of “A Little Competition for Tesla Motors“. The post got picked up by one of the Tesla discussion boards, and as a result, it attracted some informed comments. The last comment on that post, however, is worth cross-posting here.
But how much energy is required to compress that air? How efficient is the compressor? Perhaps at most 60%? Then what is the efficiency of the engine running on compressed air? So instead of using energy to compress the air with a 40% loss, then run it in an compressed air engine with further losses, isn’t it more efficient to run an electric motor? If you’re [using] solar panels, wind, hydro, nuclear to produce [electricity], then you can’t beat an electric motor at efficiency. The less energy conversions the better.