Table 1 Finite element model parameters... | Emerald Publishing

Table 1

Finite element model parameters

Parameter	Lower bound	Upper bound	Unit	Description
$L_{p i l e}$	15	45	[m]	Pile length
$D_{p i l e}$	0.5	2	[m]	Pile diameter
$λ_{s o i l 1, 2, 3}$	0.5	5.0	[W m^-1K^-1]	Thermal conductivity of soil layer 1, 2 and 3
$λ_{c o n c r e t e}$	0.5	5.0	[W m^-1K^-1]	Thermal conductivity of concrete
$L_{1} / L_{p i l e}$	0.15	0.45	[-]	Ratio of soil layer 1 thickness to pile length
$L_{2} / L_{p i l e}$	0.15	0.45	[-]	Ratio of soil layer 2 thickness to pile length
$T_{i n i t i a l}$	10	20	[°C]	Initial temperature
$n_{l o o p s}$	1	4	[-]	Number of loops
$v_{f l u i d}$	0.1	1.0	[m s^-1]	Pipe fluid velocity
$T_{i n l e t}$	0	8	[°C]	Inlet temperature (Surrogate 1)
$\bar{q_{f l u x}}$	−10	−80	[W m^-1]	Normalised heat flux (Surrogate 2)

Parameter	Lower bound	Upper bound	Unit	Description
$L_{p i l e}$	15	45	[m]	Pile length
$D_{p i l e}$	0.5	2	[m]	Pile diameter
$λ_{s o i l 1, 2, 3}$	0.5	5.0	[W m^-1K^-1]	Thermal conductivity of soil layer 1, 2 and 3
$λ_{c o n c r e t e}$	0.5	5.0	[W m^-1K^-1]	Thermal conductivity of concrete
$L_{1} / L_{p i l e}$	0.15	0.45	[-]	Ratio of soil layer 1 thickness to pile length
$L_{2} / L_{p i l e}$	0.15	0.45	[-]	Ratio of soil layer 2 thickness to pile length
$T_{i n i t i a l}$	10	20	[°C]	Initial temperature
$n_{l o o p s}$	1	4	[-]	Number of loops
$v_{f l u i d}$	0.1	1.0	[m s^-1]	Pipe fluid velocity
$T_{i n l e t}$	0	8	[°C]	Inlet temperature (Surrogate 1)
$\bar{q_{f l u x}}$	−10	−80	[W m^-1]	Normalised heat flux (Surrogate 2)