Can a Sterling Engine Generate Electricity in the Extreme Temperatures of Space?

In summary, the conversation discusses the use of Stirling engines in space to produce electricity. While they have some advantages, such as being more efficient than solar cells, they also have drawbacks such as introducing vibrations and relying on fluids. Other alternatives, such as turbines, may be more suitable for spacecraft energy generation. There are also ongoing projects exploring the use of Stirling engines with radioisotopes, but again, turbines may be a better option.
  • #1
Idiot101
2
0
The temp. difference in sunlight and shade in space is quite large and so my thoughts are can one run a sterling engine in space to produce electricity.. ? .. Any thoughts?.

http://en.wikipedia.org/wiki/Stirling_engine

some videos of it on youtube as well...

cheers
 
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  • #2
A thermal engine would be far more efficient on a spacecraft than Solar cells.

It has drawbacks as well, especially as it gives vibrations to the spacecraft . Also, it relies on a fluid, which introduces failure modes.

As for Stirling engines, they have essentially drawbacks. A turbine is far better in any aspect.

Here a description of such a Solar electricity generator for spacecraft , including the Sunlight concentrator, the spillway, and other uses of a similar hardware to produce cold and store cryogenic propellants indefinitely:
http://saposjoint.net/Forum/viewtopic.php?f=66&t=2051
but you'll have to be logged into see the drawings, alas. Not my website, and the owner changed that recently.

Also, Nasa-sponsored projects want to use Stirling engines to convert heat from radioisotopes into electricity on spacecraft . Called an RTG, it uses thermocouples up to now; a thermal engine would be more efficient and save scarce Pu-238, but here again, a turbine is better.

Marc Schaefer, aka Enthalpy
 
  • #3
Thank you very much... you have answered my question...

Best wishes
 

FAQ: Can a Sterling Engine Generate Electricity in the Extreme Temperatures of Space?

1. How do Sterling engines work in space?

Sterling engines work in space by using the temperature difference between a hot and cold source to produce mechanical work. In space, the heat source can be provided by the sun or a nuclear reactor, while the cold source can be provided by radiating heat into the vacuum of space.

2. Can Sterling engines be used for space travel?

Yes, Sterling engines can be used for space travel. They have been used in spacecrafts to generate electricity from the sun's heat and in nuclear powered spacecrafts to convert heat from a nuclear reactor into mechanical work.

3. What are the advantages of using Sterling engines in space?

One advantage of using Sterling engines in space is that they are highly efficient at converting heat into mechanical work. They also have a simple design and can operate in a wide range of temperatures, making them versatile for use in space.

4. Are there any limitations to using Sterling engines in space?

One limitation of using Sterling engines in space is that they require a temperature difference between the hot and cold source to function. In the vacuum of space, this temperature difference can be difficult to maintain. Additionally, Sterling engines can be heavy and bulky, which can be a disadvantage for space travel.

5. Are there any other potential uses for Sterling engines in space?

Yes, Sterling engines have potential uses in other areas of space exploration, such as generating power for lunar or Martian colonies. They can also be used in space probes to provide electricity for long-term missions. In addition, Sterling engines can be used for thermal control in spacecrafts by transferring excess heat away from sensitive equipment.

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