conductivity et capacity for materials used in geothermy ? #16

Answered by alexandrecuer

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alexandrecuer
Apr 16, 2026
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usual values

Answered by alexandrecuer

Matériau	λ conductivity (W/m·K)	capacity ρc (J/m³·K)	Commentaire
Sol sec	0.2–0.8	1.0e6–1.6e6	❌ mauvais
Sol humide	1.0–2.5	2.0e6–3.5e6	✅ bon
Roche	2.0–4.0	2.0e6–2.8e6	✅ transfert
Sol saturé	2.0–3.5	3.0e6–4.2e6	⭐ idéal
Grout standard	0.7–1.2	2.5e6–3.5e6	⚠️ limitant
Grout amélioré	1.5–2.5	2.5e6–3.5e6	✅ optimisé

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alexandrecuer
Apr 16, 2026
Maintainer Author

Matériau	λ conductivity (W/m·K)	capacity ρc (J/m³·K)	Commentaire
Sol sec	0.2–0.8	1.0e6–1.6e6	❌ mauvais
Sol humide	1.0–2.5	2.0e6–3.5e6	✅ bon
Roche	2.0–4.0	2.0e6–2.8e6	✅ transfert
Sol saturé	2.0–3.5	3.0e6–4.2e6	⭐ idéal
Grout standard	0.7–1.2	2.5e6–3.5e6	⚠️ limitant
Grout amélioré	1.5–2.5	2.5e6–3.5e6	✅ optimisé

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alexandrecuer
Jul 9, 2026
Maintainer Author

about kusuda achenbach

https://apps.dtic.mil/sti/tr/pdf/AD0472916.pdf

http://archi.climatic.free.fr/calculs/calculs.html

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