Technological difficulties faced in making a microturbine?

  • Thread starter Thread starter sid_galt
  • Start date Start date
  • Tags Tags
    Difficulties
Click For Summary

Discussion Overview

The discussion revolves around the technological difficulties encountered in the design and manufacturing of microturbines. Participants explore various challenges related to aerodynamics, material properties, and size constraints, as well as the reasons for the limited adoption of microturbine technology.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that aerodynamics do not scale well with size, leading to increased difficulties in analysis and manufacturing as the turbine size decreases.
  • There is a question regarding the specific size threshold at which microturbines begin to pose significant technological challenges.
  • One participant raises the issue of heat absorption by turbine materials, questioning its impact on performance and design.
  • Another participant notes that size becomes problematic well before reaching the micro scale, indicating that even small turbine engines face significant challenges.
  • The material used for high-pressure turbines is highlighted as a limiting factor due to its maximum cycle temperature, which is critical for engine performance.

Areas of Agreement / Disagreement

Participants express differing views on the specific challenges associated with microturbine design, particularly regarding aerodynamics and material limitations. The discussion remains unresolved with multiple competing perspectives on the issues raised.

Contextual Notes

There are limitations in defining what constitutes a microturbine, as well as the specific size at which technological challenges become significant. Additionally, the discussion does not clarify the assumptions regarding material properties and their effects on turbine performance.

sid_galt
Messages
503
Reaction score
1
What are the technological difficulties faced in making a microturbine?

What is the main reason due to which are still not in vogue?
 
Engineering news on Phys.org
Aerodynamics do not scale well. They do to a point. After that, they become very difficult, not only to analyze, but to manufacture. Plus, as size goes down, usually the required shaft speed goes up.
 
Thank you for the reply.

So how do the aerodynamics not scale well? What is the point upto which microturbines do not pose significant tech. challenges?

also does the amount of heat absorbed by the material of the turbine pose a problem?
 
Last edited:
Well, the size becomes an issue WELL before you are considered in the 'micro' scale of things. So it is never going to be an easy thing. How small are you calling a micro turbine anyways? My company deals with small turbine engines, and we are not considered micro by any means.

The HP turbine material is usually the max cycle temp limiting factor. That is the one thing that is going to see the most temperature out of anything in the engine.
 

Similar threads

Replies
10
Views
4K
  • · Replies 5 ·
Replies
5
Views
1K
  • · Replies 1 ·
Replies
1
Views
9K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
5
Views
2K
  • · Replies 53 ·
2
Replies
53
Views
5K
  • · Replies 9 ·
Replies
9
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 9 ·
Replies
9
Views
3K