At present, there are many new technologies born in the field of thermal power, and the combined cycle technology is one of them. In short, the combined cycle technology is one gas for two purposes: the high-temperature waste gas discharged from the gas turbine is recovered and converted into steam through the waste heat boiler, which is driven after entering the steam turbine, and both turbines transmit the kinetic energy to the generator for power generation; The waste gas enters the boiler again to further convert the heat energy contained therein into kinetic energy and reduce the temperature of the final discharged gas. This is not only environmentally friendly, but also saves fuel. In addition to high power generation efficiency, fast start-up speed is also a major advantage of the combined cycle technology. Its working principle is to shut down the slow running steam turbine at the beginning of startup, and only start the gas turbine to generate enough heat energy, Then switch to the combined cycle mode. This feature is very practical for large cities with frequent power emergencies.
tency between the following statements and the above words?
Steam turbine starts earlier than gas turbine