New ways to generate electricity ?

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Discussion Overview

The discussion centers on alternative methods for generating electricity without the use of turbines and magnets, exploring various theoretical and practical approaches. Participants consider both existing technologies and speculative future developments in this area.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant notes that traditional power plants, including hydroelectric and nuclear, typically rely on turbines, and questions the potential for alternative methods that do not involve turbines or magnets.
  • Another participant suggests that solar power and photovoltaics are viable alternatives and introduces the concept of magnetohydrodynamics (MHD) as a future method for generating electricity using stationary magnets and plasma.
  • A different viewpoint emphasizes that while fuel cells can generate power without moving parts, turbines are currently more efficient and practical for electricity generation.
  • Further elaboration on MHD is requested, leading to a description of its essential features, including the role of magnets and the behavior of ionized gases in generating electricity.

Areas of Agreement / Disagreement

Participants express a variety of views on the feasibility and efficiency of different methods for generating electricity without turbines and magnets. There is no consensus on a single alternative method, and the discussion remains open to multiple competing ideas.

Contextual Notes

Some claims about the efficiency of turbines versus alternative methods are presented without detailed comparisons or quantitative analysis. The discussion includes speculative elements regarding future technologies like MHD.

scilover89
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In this modern era, there are many type of power plant, from hydro electric power plant to nuclear fission power plant or even nuclear fussion(still in research). However, besides solar power plant, most power plant require movement of turbin to generate electricity. I think, that the speed of turbin will be reduced by many factors such as friction. Are there any other ways to generate electricity without relying on turbin and magnet?
 
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There are several ways to generate electricity without turbines and magnets such as solar power and photovoltaics. Off in the (hopefully not too distant) future, electricity may be generated commercially with stationary magnets through the use of magnetohydrodynamics (MHD). That would rely on the Hall Effect with a plasma flowing through a magnetized channel.
 
Fuel cells are another possibility for generating power without moving parts, but turbines are really very good as far as efficiency goes, and are "currently" (heh-heh) a lot more practical
 
Tide said:
There are several ways to generate electricity without turbines and magnets such as solar power and photovoltaics. Off in the (hopefully not too distant) future, electricity may be generated commercially with stationary magnets through the use of magnetohydrodynamics (MHD). That would rely on the Hall Effect with a plasma flowing through a magnetized channel.
That's interesting. Can you explain more about magnetohydrodynamics if you don't mind?
 
scilover89 said:
That's interesting. Can you explain more about magnetohydrodynamics if you don't mind?

The essential features of an MHD generator include a channel bounded on opposite sides by magnets (usually permanent magnets) through which an ionized hot gas flows:

NNNNNNNNNNNN
-------------->
SSSSSSSSSSSS

The magnetic field causes electrons to drift perpendicularly to both the flow direction and the direction of the magnetic field (Lorentz force) while ions tend to drift in the opposite direction thereby generating a potential difference between the front and back of the device as sketched in my figure above. The gas can be heated by chemical reaction (such as from a rocket motor) and seeded with metal vapor.
 

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