cough, clears smoke
Could some designs of heat engines work in space?
Its pure sun energy one side, freezing on the other all the time.
https://www.sciencedirect.com/topics/engineering/heat-engines
The thing is, on a W/kg basis, heat engines are not great compared to PV, and in spaaaaaaace weight is pretty important.
dv said:
The thing is, on a W/kg basis, heat engines are not great compared to PV, and in spaaaaaaace weight is pretty important.
What if they were just in one spot collecting energy then maybe using that energy to crush rock etc
They could be on the moon, mars, on a small asteroid, on a large ship, but collecting the energy from the sun then storing it for use later.
Could miniature heat engines be of use to micro satellites?
Has the space station experimented with heat engines?
Could an enclosed steam engine work in space?
Another negative is that, as much as possible, spacecraft designers try to avoid moving parts.
Could a heat engine on an asteroid in direct sunlight power a drill for rock?
dv said:
Yes, asperger trait I think.
What sort of fish is that.
Tau.Neutrino said:
dv said:
Yes, asperger trait I think.
What sort of fish is that.
ROFL
sibeen said:
Tau.Neutrino said:
dv said:
Yes, asperger trait I think.
What sort of fish is that.
ROFL
it’d a newt.
Bogsnorkler said:
sibeen said:
Tau.Neutrino said:Yes, asperger trait I think.
What sort of fish is that.
ROFL
it’d a newt.
The axolotl (/ˈæksəlɒtəl/, from Classical Nahuatl: āxōlōtl (About this soundlisten); plural axolotls or rarely axolomeh; Spanish: Ajolote), Ambystoma mexicanum, also known as the Mexican walking fish, is a neotenic salamander related to the tiger salamander. Although the axolotl is colloquially known as a “walking fish”, it is not a fish, but an amphibian. The species was originally found in several lakes, such as Lake Xochimilco underlying Mexico City. Axolotls are unusual among amphibians in that they reach adulthood without undergoing metamorphosis. Instead of developing lungs and taking to the land, adults remain aquatic and gilled.
Tau.Neutrino said:
dv said:
Yes, asperger trait I think.
What sort of fish is that.
This is either some god tier trolling or I’m out.
dv said:
Tau.Neutrino said:
dv said:
Yes, asperger trait I think.
What sort of fish is that.
This is either some god tier trolling or I’m out.
Ive never come across a Mexican walking fish until today.
Tau.Neutrino said:
dv said:
Tau.Neutrino said:Yes, asperger trait I think.
What sort of fish is that.
This is either some god tier trolling or I’m out.
Ive never come across a Mexican walking fish until today.
Looking at them on google images a lot have different expressions.
or thermocouples
Bogsnorkler said:
Bogsnorkler said:
sibeen said:
dv said:
Tau.Neutrino said:
dv said:
Yes, asperger trait I think.
What sort of fish is that.
This is either some god tier trolling or I’m out.
ROFL
it’d a newt.
The axolotl (/ˈæksəlɒtəl/, from Classical Nahuatl: āxōlōtl (About this soundlisten); plural axolotls or rarely axolomeh; Spanish: Ajolote), Ambystoma mexicanum, also known as the Mexican walking fish, is a neotenic salamander related to the tiger salamander. Although the axolotl is colloquially known as a “walking fish”, it is not a fish, but an amphibian. The species was originally found in several lakes, such as Lake Xochimilco underlying Mexico City. Axolotls are unusual among amphibians in that they reach adulthood without undergoing metamorphosis. Instead of developing lungs and taking to the land, adults remain aquatic and gilled.
aye newt
Tau.Neutrino said:
Tau.Neutrino said:
dv said:This is either some god tier trolling or I’m out.
Ive never come across a Mexican walking fish until today.
Looking at them on google images a lot have different expressions.
https://www.abc.net.au/radio-australia/programs/pacificmornings/shark-walk/11909492
SCIENCE said:
Tau.Neutrino said:
Tau.Neutrino said:Ive never come across a Mexican walking fish until today.
Looking at them on google images a lot have different expressions.
https://www.abc.net.au/radio-australia/programs/pacificmornings/shark-walk/11909492
They’ll be walking spiders next.
Tau.Neutrino said:
SCIENCE said:
Tau.Neutrino said:Looking at them on google images a lot have different expressions.
https://www.abc.net.au/radio-australia/programs/pacificmornings/shark-walk/11909492
They’ll be walking spiders next.
There are walking spiders.
I’m with dv here.
The best use of heat in space is for producing hot water for washing.
Photovoltaics provide better performance for electricity production.
I’m trying to think whether a solar heat engine on the Moon could be useful. I specifically say the Moon because the day-night temperature difference on the Moon can be 270 degrees C. You won’t get temperature differences like that anywhere else in the solar system other than in the sulfur volcanos of Io.
For a solar heat engine on the Moon, you’d have to run pipes under the soil, which means bulldozing the soil off first, laying the pipes, replacing the soil and laying a second set of pipes on the surface. Which is a lot of work.
mollwollfumble said:
I’m with dv here.The best use of heat in space is for producing hot water for washing.
Photovoltaics provide better performance for electricity production.I’m trying to think whether a solar heat engine on the Moon could be useful. I specifically say the Moon because the day-night temperature difference on the Moon can be 270 degrees C. You won’t get temperature differences like that anywhere else in the solar system other than in the sulfur volcanos of Io.
For a solar heat engine on the Moon, you’d have to run pipes under the soil, which means bulldozing the soil off first, laying the pipes, replacing the soil and laying a second set of pipes on the surface. Which is a lot of work.
Why not just use mirrors to concentrate the light, and generate steam, just like solar-thermal power on Earth?