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whitest white cooling paint

Started by lancaIV, April 16, 2021, 01:03:07 PM

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lancaIV

April 16, 2021, 01:03:07 PM
https://translate.google.com/translate?sl=auto&tl=en&u=https://www.n-tv.de/wissen/Farbe-kuehlt-besser-als-viele-Klimaanlagen-article22494982.html

It reflects more than 98 percent of the incident sunlight, and its surface remains 4.5 degrees Celsius below the ambient temperature even in the midday heat.


At night it is even 10.5 degrees cooler than the surrounding area. The researchers working with Xiulin Ruan from Purdue University in West Lafayette (Indiana, USA) estimate the cooling performance of the paint based on barium sulfate to be more than 100 watts per square meter





cool-electric development from 1982 comparison



https://worldwide.espacenet.com/publicationDetails/biblio?DB=EPODOC&II=14&ND=3&adjacent=true&locale=en_EP&FT=D&date=19910228&CC=DD&NR=287597A5&KC=A5


After connecting an electrical resistor,
the room temperature dropped from 27 °
to 23 ° C, and 80 watts of electrical energy could be used per square meter of wall surface
a voltage of about 400 V.

https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=DD&NR=223743A1&KC=A1&FT=D&ND=3&date=19850619&DB=EPODOC&locale=en_EP


https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=DD&NR=208029A1&KC=A1&FT=D&ND=3&date=19840321&DB=EPODOC&locale=en_EP

Paul-R

#1
April 16, 2021, 05:52:52 PM


I would have thought a mirror type surface would do better than that. More expensive, though.

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