Revisions to Why is using steam to rotate a turbine more efficient?

Rollback to Revision 1

Source Link

edited Nov 12, 2015 at 19:56

417
3
9

Large scale electric power plants use steam to turn their turbines in order to generateFor example i have an exhaust pipe with very hot air from burning biofuel, and i have a turbine at the end of the exhaust that rotates and generates electricity.

Why is it more efficient to use the heat water to create steam than to directlyboil water then use the hot air from the combustion process in ordersteam produced to rotate the turbines? Or said another way,As in why is more electricity generated by using steam to rotate the turbines as opposed to directlynot using the exhaust gasses?

For example, I have an exhaust pipe that puts out very hot air fromsteam when burning biofuel. That exhaust pipe connects to a turbine, which rotates because of the hot air and generates electricity. But large scale electric power plants use steam turbines instead.same amount of biofuel?

added 233 characters in body

Source Link

edited Nov 12, 2015 at 15:14

user16

For example i have an exhaust pipe with very hot air from burning biofuel, and i have a turbine at the end of the exhaust that rotates and generatesLarge scale electric power plants use steam to turn their turbines in order to generate electricity.

Why is it more efficient to use the heat to boil water thento create steam than to directly use the steam producedhot air from the combustion process in order to rotate the turbines? As inOr said another way, why is more electricity generated by using steam to rotate the turbines as opposed to notdirectly using steam when burning the same amount of biofuelexhaust gasses?

For example, I have an exhaust pipe that puts out very hot air from burning biofuel. That exhaust pipe connects to a turbine, which rotates because of the hot air and generates electricity. But large scale electric power plants use steam turbines instead.