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Revolutionary Paint: How to Make Surfaces Stay Cool in the Sun

Tech Ingredients · 985.3K views · 2023-03-03 · 49:39

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Overview

Tech Ingredients shows how to make a homemade radiative cooling paint, with a custom liquid panel that cools below ambient temperature outdoors. The video covers the materials and how to apply the paint.

On Hacker News

HN points to it as an impressive, hands-on DIY demonstration of passive radiative cooling that works in practice.

Recommended by 5 HN people across 5 months · HN mentions 2023–2026

Topics

Materials scienceChemistryRenewables, batteries & storage
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passive coolingpaintdiyreflectivity

What people said

slimsag · 2024-03 · Recommendation

You might like NightHawkInLight's videos on the topic[0] and Tech Ingredients[1] - they've been working on making paint using this technology with an at-home DIY process and experimenting with it. [0] [LINK] [1] [VIDEO]

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20after4 · 2024-03 · Recommendation

Sort of related: the YouTube channel "Tech Ingredients" do some cool things with radiant cooling: [VIDEO]

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scotty79 · 2023-11 · Recommendation

Great video about making home-made high reflectivity paint: [VIDEO] Aluminium plate painted with this paint is cooler when exposed to the sun not only than unpainted plate but also ambient air which feels really magical for me.

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Sources

Video by Tech Ingredients, played through YouTube.

Data and selection notes

HN summaries and labels may contain AI errors. HN dates refer to discussions, not video publication.

HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

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