Phase-change material in 2010s: EN
Phase-change material is specified as paraffins / salt hydrates / bio-waxes. Density band ~0.8–1.6 g/cm³. Keep Phase-change material with “EN” and 21 from 2010s. Processing sets grain, crystallinity or fibre orientation — the reason two lots of Phase-change material can test differently.
This atlas treats Phase-change material as a system: mill route, coatings, tests and the cavity it sits in. Conductivity note: low-to-moderate; often needs fins or graphite. Insulation score 52/100 is relative to 32 entries — metals lose, VIPs and aerogels win. Fire letter in editorial use: paraffin = combustible; salts vary. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
Origin: NASA / Telkes 1940s–70s; building PCM 2000s, United States / Germany. The process chapter follows feedstock → conversion → forming → finish → install. Uses span buildings to defence / safety. Pairings matter: mineral-wool. Circularity mark 48/100. Ask which scrap, which certificate, which year.
Related atlas entries, a short glossary, and three threads that keep Phase-change material honest. EN 13501-1 reaction-to-fire letter (A1–F), not a wall rating. Thermal conductivity in W/m·K. Lower means better bulk insulation. Declared performance after blowing-agent or moisture drift.
The label keeps Phase-change material, 2010s, and 21. “EN” is the condition on the figure. Keep Phase-change material with “EN” and 21 from 2010s. 212010s
Figures to keep
- Year of the condition
- 2010s
- Property figure
- 21
- Material
- Phase-change material
- Use line
- EN
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