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there are stages, fixed blades on the turbine shell and rotating blades on the rotor. They are very close together sooo, because the steam enters at one end of the turbine it heats that area first and it expands the metal there faster than at the other end causing it to rub. if you heat it slowly the turbine casing and the rotor grow at ~ the same rate so the stages don't rub together. If you heat too quickly,by just admitting a high volume of steam, the rotor heats up to fast, because of it has less metal to heat up, it rubs the fixed blades. this is called going long (the rotor is longer than the tolerances between the fixed blades on the casing)
What else can I help you with?
What is the purpose of carbon rings in steam turbine?
Carbon rings in steam turbines serve as seals to prevent steam from leaking between the turbine rotor and the casing. They help maintain efficiency by ensuring that the steam pressure is effectively utilized to generate power. Additionally, these carbon rings can withstand high temperatures and pressures, providing durability and reducing maintenance needs in the turbine system.
What is the price of a wind turbine?
Grandvalley State University in Allendale, Michigan has developed one for sale that will provide about half the average power needs for a home for about $10,000.
What is most efficient gas turbine or steam turbine?
Gas turbines are generally more efficient than steam turbines, especially in terms of power-to-weight ratio and startup time. They can achieve higher efficiency in combined cycle setups, where waste heat from the gas turbine is used to generate steam for a steam turbine. However, steam turbines can be more efficient in large-scale power plants that operate continuously. Ultimately, the choice between the two depends on specific application needs, fuel availability, and operational conditions.
What are software needed to run the computer?
The software needed to run a computer is known as the Operating System. Many hardware platforms allow you to choose between multiple operating systems to suit your needs.
Where does the water goes from the tail race OF A TURBINE?
The water exiting the tailrace of a turbine typically flows back into a river, lake, or reservoir from which it was originally sourced. After passing through the turbine, the water is at a lower elevation and lower energy level. This return to the natural water body helps maintain ecological balance and can be used for downstream water needs. In some hydroelectric facilities, the tailrace may also be managed to optimize water flow for irrigation or recreation.
Why do you need to preheat the oven before baking?
Check the recipe before cooking. Sometimes preheating is, and sometimes is not, necessary.If you need to cook something in the oven for a specific amount of time at a specific temperature, then it must be cooked at that temperature the WHOLE time.If it takes 10 minutes to preheat it to 300 degrees, and you put the food in WITHOUT preheating, you undercook it.And if you out the food in WHILE preheating, you end up overcooking it.
What steps needs for start a steam turbine from cold conditon?
steam turbine cold start up list:
Why must you preheat copper before brazing?
You usually do not braze copper, you solder it. If you were to use brazing rod on copper, the copper would have very close to the same melting point as the brazing rod. This makes it difficult to do. As far as preheating the copper, it needs to be hot enough for the brazing to flow.
What is governing of impulse turbine?
Basically governing of a turbine is controlling the speed of the turbine as the load keeps varying. The turbine needs to rotate at a constant speed. The governing of an impulse turbine is done by varying the jet of water that hits the buckets of the runner. This is done by using a spear arrangement in the pen stock. A pen stock is a type of pipe that provides the jet of water.
What is governing of turbines?
Basically governing of a turbine is controlling the speed of the turbine as the load keeps varying. The turbine needs to rotate at a constant speed. The governing of an impulse turbine is done by varying the jet of water that hits the buckets of the runner. This is done by using a spear arrangement in the pen stock. A pen stock is a type of pipe that provides the jet of water.
What determines the type of operating system selected?
The customer's needs.
What are the needs of operating system in a computer?
An operating system provide an interface between the user and hardware. operating system is a platform in which all the user applications can run
How tall would a residential wind turbine tower have to be to be effective?
A residential wind turbine tower typically needs to be at least 30 feet tall to place the turbine above trees and nearby obstructions that may block wind flow. However, the ideal height can vary depending on local wind conditions and obstacles. Most residential wind turbines are effective with tower heights between 80 to 120 feet.
Why does your computer switch off after copying operating system files for it to install new operating system?
because it needs to reboot
Ms PowerPoint is considered an operating system?
It is a software application.. Because power point needs operating system to run
How do traveling wind turbine technicians travel?
By the same means any other technician that needs to travel would do so.
Why turbine blades are largenr in size at exhaust end?
Because the steam expands as it passes through the turbine. The steam velocity through the turbine is constant from steam chest to exhaust hood (though it changes in each stage). Thus, the space needed for the steam to expand needs to be expanded to correspond with that expansion of the steam.
