I am trying to design an axial turbine for my project

In summary, a chemical engineering student is working on designing a geothermal power plant and has been tasked with designing an n-pentane turbine. However, they are struggling with understanding the main components and finding a detailed n-pentane steam table. They are looking for guidance on how to design a simplified version of the turbine and are limited on time. They have already done some work on determining temperatures, pressures, and flow rates, and are now seeking help with designing the nozzle, rotor, and blades. Due to financial constraints, they are unable to hire someone to do the design for them.
  • #1
AhmedAB
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TL;DR Summary: I have a problem designing an axial turbine, there is a lot I don't understand

hey, how are you all doing, I am a chemical engineering student working on designing a geothermal power plant, weirdly I have been told that I must design an n-pentane turbine for our Plant, it's so confusing there is a lot I don't understand and sadly I don't have enough time to read entire books, so I am asking if you can guide me to how to design a steam turbine main components and how to can my design match my turbine work output. also, where can I find an n-pentane steam table I couldn't find one that was detailed, thank you so much for reading, and forgive me a lot for asking too much .
 
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  • #2
AhmedAB said:
I don't have enough time to read entire books
Perhaps you can hire someone to do that for you ?
And then you could also hire someone to design your turbine ...

Bottom line: what are you prepared to do yourself ?

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  • #3
AhmedAB said:
I am a chemical engineering student working on designing a geothermal power plant
A full design is far beyond the scope of a student design project, so you have to simplify. Focus on the cold side temperature, hot side temperature, and the distance between them. Look at the relationship between heat exchanger sizes and temperature drops across the heat exchangers. Then flow losses vs pipe sizes for the distance between hot and cold sides.

Then add all that up to find the temperatures and pressures at the inlet and outlet of the turbine, and the flow rate through the turbine. Put everything into a flow diagram. If time remains, start refining the design of major components.

Mentor note: This thread moved to homework forum from technical forum.
 
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  • #4
jrmichler said:
A full design is far beyond the scope of a student design project, so you have to simplify. Focus on the cold side temperature, hot side temperature, and the distance between them. Look at the relationship between heat exchanger sizes and temperature drops across the heat exchangers. Then flow losses vs pipe sizes for the distance between hot and cold sides.

Then add all that up to find the temperatures and pressures at the inlet and outlet of the turbine, and the flow rate through the turbine. Put everything into a flow diagram. If time remains, start refining the design of major components.

Mentor note: This thread moved to homework forum from technical forum.
I fully agree with you a full design seems like a pain to do, what I am aiming for is a way less detailed design more specifically about the measurement of the nozzle, rotor, blades, etc, I don't want to go deep into design cause it will take a huge portion of my time as you said, also all that you said is thankfully ready or being working on at the moment, also forgive me I am new to this forum I am trying to understand it more, thank you for responding I really appreciate it.
 
  • #5
BvU said:
Perhaps you can hire someone to do that for you ?
And then you could also hire someone to design your turbine ...

Bottom line: what are you prepared to do yourself ?

##\ ##
I wish I could hire someone but unfortunately, I am not able to finically so I am compelled to do it myself, but of course, not a full design just a simplified version, Thank you for responding I really appreciate it, its my pleasure really
 
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FAQ: I am trying to design an axial turbine for my project

What are the key design parameters for an axial turbine?

The key design parameters for an axial turbine include the blade geometry (such as chord length, twist, and airfoil shape), the number of stages, the rotational speed, the inlet and outlet angles of the blades, the hub-to-tip ratio, and the flow rate. These parameters are crucial for optimizing the efficiency and performance of the turbine.

How do I choose the right materials for the turbine blades?

Choosing the right materials for turbine blades depends on factors like operating temperature, stress levels, corrosion resistance, and manufacturing capabilities. Common materials include high-strength alloys such as titanium, nickel-based superalloys, and stainless steel. For high-temperature applications, materials with good thermal stability and creep resistance are preferred.

What methods can I use to analyze the aerodynamic performance of my turbine design?

To analyze the aerodynamic performance of your turbine design, you can use computational fluid dynamics (CFD) simulations to model the flow through the turbine and predict performance metrics such as efficiency, pressure distribution, and velocity profiles. Additionally, wind tunnel testing and analytical methods like blade element theory can provide valuable insights.

How can I optimize the efficiency of my axial turbine?

Optimizing the efficiency of an axial turbine involves fine-tuning various design parameters such as blade shape, angle of attack, and stagger angle. Ensuring minimal losses due to friction, turbulence, and flow separation is critical. Advanced techniques like optimizing blade profiles for specific flow conditions and using multi-stage designs can also enhance efficiency.

What are the common challenges faced during the design and manufacturing of axial turbines?

Common challenges in designing and manufacturing axial turbines include achieving high aerodynamic efficiency, managing thermal stresses, ensuring structural integrity, and minimizing manufacturing defects. Balancing performance with cost and manufacturability, as well as dealing with complex flow phenomena like secondary flows and blade tip vortices, are also significant challenges.

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