Author Topic: [Theoretical] Solar radiation shield painted in purdue white?  (Read 691 times)

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Offline ocean

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[Theoretical] Solar radiation shield painted in purdue white?
« on: December 29, 2022, 02:56:13 PM »
Hey,

I wonder what would happen if you would paint the outside of your run-off-the-mill solar radiation shield in the whitest white avaible at this point in time - purdue white.
According to the research the paint reflects up to 98.1% of sunlight, including IR light.

In the article it says the following:
Quote
The paintís whiteness also means that the paint is the coolest on record. Using high-accuracy temperature reading equipment called thermocouples, the researchers demonstrated outdoors that the paint can keep surfaces 19 degrees Fahrenheit cooler than their ambient surroundings at night. It can also cool surfaces 8 degrees Fahrenheit below their surroundings under strong sunlight during noon hours.

...and even more so:

Quote
The paint's solar reflectance is so effective, it even worked in the middle of winter. During an outdoor test with an ambient temperature of 43 degrees Fahrenheit, the paint still managed to lower the sample temperature by 18 degrees Fahrenheit.

Source: https://www.purdue.edu/newsroom/releases/2021/Q2/the-whitest-paint-is-here-and-its-the-coolest.-literally..html

Wouldn't this paint theoretically distort your temperature measurement? But instead of the very common additional few tenths of degrees on top of the real temperature, you'd instead measure considerably colder than it really is?

I am intrigued in what you guys think about it, as the paint probably will be avaible to the general public in the years to come.


Many greetings from Germany!  [tup]

 

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