Numerical Research and Parametric Study on the Thermal Performance of a Vertical Earth-to-Air Heat Exchanger System

Table 1

The parameters involved in the VEAHE system.

Parameters	Unit	Value
Diameter of ducts	mm	150
Thickness of ducts	mm	4
Pitch distance	mm	187.5
Depth of buried ducts	m	30
Diameter of vertical shafts	mm	400
Diameter of soil field	mm	2000
Thickness of insulation layers	mm	20
Length of insulation layers	m	3