Below a certain depth, the ground temperature remains almost unchanged annually. This
phenomenon can be exploited by coupling a ground heat exchanger to a heat pump, storing …

Heat pumps as the only end-use cooling/heating technology with a Coefficient of
Performance (COP) greater than one, have attracted a great deal of attention over the past …

This research is concerned on heat transfer analysis and modelling in a double U-tube
borehole heat exchanger (BHE), via dividing the borehole into two separate regions. The …

A semi-analytical method for the calculation of g-functions of bore fields with mixed
arrangements of series-and parallel-connected boreholes is presented. Borehole wall …

Most ground-coupled heat pumps exchange heat with the ground by means of a borehole-
heat-exchanger (BHE) field. The time evolution of the fluid temperature at the outlet of the …

The currently available moving finite line source (MFLS) model for design and simulation of
vertical borehole heat exchangers (BHEs) neglects the effect of buried depth, ie, the vertical …

Thermal imbalance is a common problem in ground source heat pump (GSHP) systems,
especially those with large scale multiple ground heat exchangers (GHEs). It usually …

An iterative numerical method to determine g-functions of borehole fields with the boundary
condition of uniform temperature and time-constant surface-averaged heat flux is proposed …

Existing analytical solutions for vertical borehole heat exchangers (BHEs) in a multilayered
ground normally require a prescribed heat transfer rate at the borehole wall, such as a …

A new method is proposed to optimize the configurations of vertical ground heat exchangers
using topology optimization and the method of moving asymptotes. The problem formulation …