Could you help me how can we use the dynamics energy of a high speed low pressure (atm) air, exits from a piping system equipped with a fan, without increasing the pressure on the exitting air and accordingly on the fan.
2007-07-20 09:32:08 · 2 answers · asked by saeed_x61 1 in Science & Mathematics ➔ Physics
First answer is right. If the air is driven by a 100-watt fan you'd be lucky to recover 20 watts. Anyway you can loosely couple the high-velocity free stream to a larger-diameter turbine (or fan) without significantly changing the back pressure. However you'd get more efficiency using closer coupling to a higher-speed turbine and with that setup you could vary the mechanical loading and back-pressure by varying the electrical load, an easy experiment.
2007-07-20 12:24:21 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋
If the air is driven by a fan it is unlikely to have enough energy to make recovering it cost effective.
2007-07-20 18:18:56 · answer #2 · answered by Steve 7 · 0⤊ 0⤋