Single-phase generator The early generators for those single-phase traction networks are single-phase generators. Even with newer three-phase motors which were introduced to some modern trains, the single-phases transmission for traction networks survive their time and are still in use in many railways today. However, many traction power stations have replaced their generators over time to use three-phase generators and convert into single-phase for transmission. In the early development of hydroelectricity, single-phase generators played an important role in demonstrating the benefits of alternating current. In 1891, a 3,000 volts and 133 Hz single-phase generator of 100 horsepower was installed at Ames Hydroelectric Generating
Single-use bioreactor of the life cycle assessment of conventional and single-use bioreactors looks much more favorable for the single-use bioreactors as expected before. According to a report of A. Sinclair et al. Single-use bioreactors will help to save 30% of electrical energy for operation, 62% of the energy input for the production of the system, 87% of water and finally 95% of detergents, all compared to conventional bioreactors. Single-use bioreactor A single-use bioreactor or "disposable bioreactor" is a bioreactor with a disposable bag instead of a culture vessel. Typically, this refers to a bioreactor in which the lining in contact with the