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  • Legacy Donating Member
  • Member For: 14y 1m 4d
  • Gender: Male
  • Location: Sydney
Posted

Does black colour give better performance?

Actually.......Yes.

  • MattyP
  • Legacy Donating Member
  • Member For: 14y 4m 27d
  • Gender: Male
  • Location: Central Coast
Posted

It radiates the heat away better

Also absorbs it better when in sunlight

  • Member
  • Member For: 20y 4m 4d
  • Gender: Male
  • Location: @ my laptop
Posted

So sitting stationary it would be absorbing more heat from the radiator and air con?

  • MattyP
  • Legacy Donating Member
  • Member For: 14y 4m 27d
  • Gender: Male
  • Location: Central Coast
Posted

To a degree yes

My understanding from a physics stand point is most of the heat from the AC and radiator is emitted out upwards and outwards because of the pull on the air by the radiator fans.

The radiation of the heat from the cooler would be greater than the residual heat soak after the car is warmed up

when light is emitted, a photon of light comes in and hits an electron, giving it some energy so it increases its energy.

whether it’s absorbed or not will depend on the structure of the electrons. If there's somewhere for the electron to go, if it can increase it's energy level - and it’s happy up there - then it will absorb the light. If not, then the light can't be absorbed and carries straight on. But if it is absorbed, the substance looks black. If it isn't, it’s white because the light is reflected.

This means that if you heat something up, if there's somewhere for the electrons to go up to, and it’s black, then there's also somewhere for the electron to drop down to again, meaning that the substance will also emit energy.

So if something is good at absorbing light then it’s also good at emitting it. So a black thing should be much better emitting light than a white thing.

Credit to http://www.thenakedscientists.com/HTML/questions/question/3136/

  • Like 1
  • Member
  • Member For: 20y 4m 4d
  • Gender: Male
  • Location: @ my laptop
Posted

but if you are stationary and the fans are not activated the hot air from the radiator will be emitted forwards as well

  • MattyP
  • Legacy Donating Member
  • Member For: 14y 4m 27d
  • Gender: Male
  • Location: Central Coast
Posted

Correct

The black core will warm up faster but operate at a lower temp

The polished will take longer to warm up but operate at a higher temp

  • MattyP
  • Legacy Donating Member
  • Member For: 14y 4m 27d
  • Gender: Male
  • Location: Central Coast
Posted

The space shuttles radiators are (well were) painted black for this very reason.

  • Member
  • Member For: 20y 4m 4d
  • Gender: Male
  • Location: @ my laptop
Posted

so based on the answer to my question, then the mightycar mods comparison was not conducted 100% correct

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