Table 1 Material’s physical property parameter
From: Heat transfer analysis of underground U-type heat exchanger of ground source heat pump system
ρ [kg/m3] | cp [J/kg.k] | λ [W/m.k] | η [Pa.s] | |
|---|---|---|---|---|
Water | 993.9 | 4147 | 0.6265 | 7.275e−04 |
HDPE pipe | 950 | 2300 | 0.45 | |
Backfill soil | 1900 | 900 | 2.2 | |
Rock-soil | 2530 | 840 | 2.58 |