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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.
What else can I help you with?
Why vacuum is created in condenser on steam turbine?
Firstly, vacuum is being created in turbine exhaust and condenser rather than being required. It is created to reduce the back-pressures and to improve the turbine efficiency. Also, with vacuum the designers can design large size last stage blades of LP turbine for maximizing the turbine output.
What is the necessary of compounding in turbines?
compounding of turbines is necessary to make the turbines practically controllable.If compounding is not done the size of the turbine will be huge.Hence by pressure &velocity compounding the turbine becomes small in size &its velocity is also becomes controllable.
What is the length of an blade for a gas turbine?
The length of a blade depends on the style (impulse or reaction), the overall size of the turbine, whether it is an axial flow or radial flow turbine, and where the blade is located within turbine of an axial flow turbine. One thing that is constant: the length of the blade increases from the steam or gas inlet to the discharge of the unit. The profile will gradually increase in diameter from inlet to discharge.
What is the cause of High Displacement in Steam Turbine?
High displacement in a steam turbine typically results from the design and operational parameters of the turbine, including the size and number of stages, as well as the steam flow rate. Increased steam flow leads to a larger volume of steam passing through the turbine, which can elevate displacement. Additionally, factors such as changes in steam pressure and temperature can affect the turbine's efficiency and capacity, potentially causing higher displacement. Proper design and operational adjustments are crucial to manage displacement effectively.
What is the maximum plant load factor a gas turbine gives when operating in open cycle?
Depends on what type of gas, plant size and cycle and carriage.
How far are the wind turbine blades off the ground?
Wind turbine blades can reach heights of 200 feet or more off the ground, depending on the size of the turbine. This height allows the blades to capture higher wind speeds for more efficient energy production.
How long are the blade on a wind turbine?
The blades on a wind turbine can range from around 100 to 330 feet in length, depending on the size of the turbine. Larger turbines typically have longer blades to capture more wind energy.
What is the cost of wind turbine blades and how much do they typically cost?
The cost of wind turbine blades can vary depending on the size and type of blade. On average, a single wind turbine blade can cost anywhere from 100,000 to 500,000.
How many feet wide is a wind turbine?
Wind turbine vary enormously in size from a small turbine on a boat with blades about two feet in diameter to large industrial 'wind farms' the blades of which are individually dozens of feet long
How big are the wind turbine blades?
Most commercial turbines being assembled onshore in Sweden today (2012) have blades that are about 50 meters long. Offshore turbines have blades up to 70 meters. An 83 meter blade was sent to a testing facility in October of 2012.
What is a steam turbine diaphragm?
Steam turbine is comprising of stages, number and size of the stages depands upon the break horse power of the turbine. The stage has set of moving and fixed blades. The moving blades are attached to the rotor while the stationary blades is called Diaphragm. The diaphragm guides the steam to glide over the moving blades for producing rotary motion.
How many blades should i put on my model wind turbine?
The number of blades in wind turbine is not determined by aesthetics but by science. The size, shape, solidarity, and positioning is determined by the weather conditions and power output. Current tubbiness include turbines using vortexes (no blades) and high solidarity turbines (12 blades) once popular on farms to pump water.If the model is a replica of actual turbine the number of blades in the model will be the same as the number in the actual unit.
Why vacuum is created in condenser on steam turbine?
Firstly, vacuum is being created in turbine exhaust and condenser rather than being required. It is created to reduce the back-pressures and to improve the turbine efficiency. Also, with vacuum the designers can design large size last stage blades of LP turbine for maximizing the turbine output.
How long is a rotor blade of a wind turbine?
The length of a rotor blade on a wind turbine can vary depending on the turbine size and design. On average, rotor blades can range from 116 to 328 feet (35 to 100 meters) in length for utility-scale turbines.
What is the theory behind generating electricity through hydroelectric power?
The main theory is that in a closed system, water at a high physical level runs downhill to a lower physical level. This water flow through the generators turbine blades induce the turbine to turn. Control of the water flow through the blades controls the speed of the turbine generator. The head pressure and volume of the water govern the size of the generator that is connected to the turbine.
How does the area of a wind turbine affect its energy output?
The larger the area of a wind turbine's rotor blades, the more wind it can capture, resulting in greater energy output. This is because larger blades can generate more mechanical energy from the wind, which can then be converted into electrical energy by the turbine's generator.
How long and how thick are wind turbine blades?
Wind turbines blades are about 15 meters long (average wind turbine) The thickness of the blade depends on the length of the blade. The width is about 10% of the length, in this case, would be about 1.5 meters thick.
