How are gas turbines and steam turbines combined?
Gas turbine Combine heat power plants which uses the waste heat in the flue gas emerging out of gas turbines. Steam turbine Combine heat power plants that use the heating system as the jet steam condenser for the steam turbine. Molten-carbonate fuel cells have a hot exhaust, very suitable for heating.
How is steam generated in a combined cycle power plant?
In a combined cycle power plant, the heat of the gas turbine’s exhaust is used to generate steam by passing it through a heat recovery steam generator (HRSG) with a live steam temperature between 420 and 580 °C.
How does a multiple boiler system system work?
Multiple boiler controllers can also be configured to automatically rotate the firing order of the boilers to equalize their accumulated run time. In most situations, this is preferred over a fixed firing order, so all the boilers can be serviced and ultimately replaced with the same accumulated running time.
How is steam used in a cogeneration boiler?
This high pressure steam is used to drive a tribune, which is in turn is connected to an alternator and hence drive an alternator to produce electric energy. The exhaust steam is then sent to the condenser, where it gets cool down and gets converted to water and hence return back to boiler for producing more electrical energy.
How does steam flow in a multi boiler system?
Steam flows in response to a fall in pressure. In a multi boiler installation, the ability of one boiler to supply steam as opposed to another is dependent upon pipework pressure. Often there is little thought given to the interconnection between two or more boilers.
What happens if you have more than one boiler?
With one boiler, the result is the inability to supply the maximum weight of steam that the boiler is capable of generating. A drop in pressure across the distribution system will result. However, with two or more boilers interconnected, problems with boiler operation can also result.
How do you run a hot water zone off a steam boiler?
Pipe in two ball valves (or gate valves) and two boiler drains below the boiler water line. Shut both ball valves (or gate valves). Now connect the garden hose to one of the boiler drains and let the other flow freely to a drain. Fill the zone piping under city water pressure until all the air comes out.
Can a single boiler be used for multiple loads?
Systems that use separate boilers for each of several loads cannot “share” boiler output among the loads. A boiler that’s dedicated to snowmelting is of no assistance during a high demand for domestic hot water. A boiler that only heats the pool is of no use should the space-heating boiler be down for service.
