Science – Society – Technology
From: Optimization of operating parameters of earth air tunnel heat exchanger for space cooling: Taguchi method approach
Material
Density (kg/m3)
Specific heat (J/kg-K)
Thermal conductivity (W/m-K)
Air
1.22
1006
0.02
Soil
2050
1840
0.52
PVC pipe
1380
900
0.16