When designing ground heat exchangers used with ground source heat pump systems, a
critical design property is the thermal conductivity of the ground. Thermal response tests are …

The borehole thermal resistance–that is, the thermal resistance between the fluid in the U-
tube and the borehole wall–is both a key performance characteristic of a closed-loop …

In this study, slinky (the slinky-loop configuration is also known as the coiled loop or spiral
loop of flexible plastic pipe) type ground heat exchanger (GHE) was established for a solar …

This paper presents numerical study on the use of nanofluids to replace conventional
ethylene glycol/water mixture as heat carrier in a BoreHole Heat Exchanger. Nanofluids …

Solar-ground source heat pump system (SGSHPS) is a new type of high efficiency, energy
saving and environmental protection air-conditioning technology. In this paper, experimental …

This paper concerns the modeling of vertical Borehole Heat Exchangers (BHEs) for Ground
Source Heat Pump (GSHP) applications. Focus is devoted to the analyses of Thermal …

In this study, the historical and technical development and the current status of distributed
(DTRT) and enhanced (ETRT) thermal response tests (TRT) are reviewed. The different test …

In most of the world, borehole heat exchangers used with closed-loop ground source heat
pump systems are backfilled with a low permeability grout to prevent water contamination …

The aim of this paper is to review the recent scientific literature concerning geothermal heat
pumps and the existing regulations and/or technical guidelines in selected European …

The distribution of ground thermal conductivity (λ s) is a significant consideration for the
design of ground source heat pump systems. This paper proposed a new method to …