Table 3 The system under examination maintains consistent design parameters.

Specific heat capacity of air

C_p,air

1005

J kg⁻¹ K⁻¹

Ambient temperature

T_amb

30

°C

Well water temperature

T_well,water ​

14

°C

Soil temperature

T_soil

18.5

°C

Fan efficiency

η_fan

0.5

–

Pump efficiency

η_pump

0.7

–

Loss coefficient of the WAHE

k_c,WAHE

2

W m⁻¹ K⁻¹

Loss coefficient of the EAHE

k_c,EAHE ​

2.6

W m⁻¹ K⁻¹

Specific heat capacity of water

C_p,water

4186

J kg⁻¹ K⁻¹

Length of WAHE in line with air flow

L

2

m

Air density

ρ_air

1.2

kg m⁻³

Water density

ρ_water

1000

kg m⁻³

Dynamic viscosity of air

μ_air

1.5E-05

kg m⁻¹ s⁻¹

Dynamic viscosity of water

μ_water​

0.001

kg m⁻¹ s⁻¹

Well depth

H_well

35

m

Area of air inlet to WAHE

ab

0.25

m²

Hydraulic diameter of inlet air to WAHE

D_H,WAHE

0.5

m