Exploring the Difference in Turbine Design: Wind Power vs. Hydro Power

In summary, the conversation discusses the difference in the number of blades used in wind power plants and hydro power plants. It is suggested that this is due to the density and speed of the fluid, as well as the optimization of the blades' radius. The conversation also includes links to further information about the design and function of these turbines.
  • #1
scorpio_wan1945
12
0
hello,

there is a question bugging my head for quite some time..

why wind power plant has lesser turbine blades while the one in hydro power plant has more?...

is it due to the density of the fluid?

thanks
 
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  • #2
It is probably a function of density (water has a density about 833 times that of air), speed of the flow both of which affect momentum and energy transfer. Water turbines are much more rigid because of the shear forces associated with the rushing water.

I believe wind turbines are optimized on radius (length) of the blades. Adding one more blade would increase the mass by another 33%, perhaps without added advantage.

The wind turbines cut out at around 65 mph (~97 ft/s), and I believe water turbine may have higher flows.
 
  • #3
That seemed like an interesting question to me. Here's something off the net:

http://www.windpower.org/en/tour/design/index.htm [Broken]

http://www.windpower.org/en/tour/design/concepts.htm [Broken]
 
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  • #4
thanks for the explanation... and the links proves very useful :)
 
  • #5
Some examples of hydro turbines:

http://www.voithsiemens.com/vs_e_prfmc_pwrful_prdcts_turbines.htm

http://www.toshiba.co.jp/f-ene/hydro/english/products/equipment/turbine.htm [Broken]

http://www.hitachi.us/Apps/hitachicom/content.jsp?page=powerequipment/TurnkeyPowerPlants/HydroPlants/index.html&level=2&section=powerequipment&parent=TurnkeyPowerPlants&nav=left&path=jsp/hitachi/forbus/powerequipmentsystems/&nId=iD

http://www.gepower.com/prod_serv/products/hydro/en/turbines/index.htm [Broken]
 
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1. What is the purpose of turbine design?

The purpose of turbine design is to create an efficient and effective device that converts mechanical energy into electrical energy. Turbines are used in power generation, aviation, and other industries where energy conversion is necessary.

2. What factors are considered in turbine design?

Several factors are considered in turbine design, such as the type of fuel used, the desired output, the operating conditions, and the materials used. Other factors include the size and shape of the turbine, the efficiency, and the cost.

3. How is the efficiency of a turbine determined?

The efficiency of a turbine is determined by comparing the energy output to the energy input. The higher the energy output in relation to the energy input, the more efficient the turbine is. Factors such as friction, turbulence, and blade design can affect the overall efficiency of a turbine.

4. What are the different types of turbines?

There are several types of turbines, including steam turbines, gas turbines, and wind turbines. Each type operates differently and is designed for specific purposes. Steam turbines are used in power plants, gas turbines are used in aviation and power generation, and wind turbines are used to harness wind energy.

5. How does turbine design impact renewable energy?

Turbine design plays a crucial role in renewable energy production, particularly in wind and hydro power. By optimizing the design of turbines, we can increase their efficiency and output, making renewable energy sources more viable and cost-effective. Additionally, advancements in turbine design can lead to more sustainable and environmentally friendly energy production.

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