Thermal response testing for ground source heat pump systems—An historical review
JD Spitler, SEA Gehlin - Renewable and Sustainable Energy Reviews, 2015 - Elsevier
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 …
critical design property is the thermal conductivity of the ground. Thermal response tests are …
Accuracy of borehole thermal resistance calculation methods for grouted single U-tube ground heat exchangers
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 …
tube and the borehole wall–is both a key performance characteristic of a closed-loop …
Modelling and experimental performance analysis of solar-assisted ground source heat pump system
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 …
loop of flexible plastic pipe) type ground heat exchanger (GHE) was established for a solar …
Borehole heat exchanger with nanofluids as heat carrier
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 …
ethylene glycol/water mixture as heat carrier in a BoreHole Heat Exchanger. Nanofluids …
Experimental investigations of the performance of a solar-ground source heat pump system operated in heating modes
W Yang, L Sun, Y Chen - Energy and Buildings, 2015 - Elsevier
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 …
saving and environmental protection air-conditioning technology. In this paper, experimental …
Study on the best heat transfer rate in thermal response test experiments with coaxial and U-pipe borehole heat exchangers
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 …
Source Heat Pump (GSHP) applications. Focus is devoted to the analyses of Thermal …
Advanced thermal response tests: A review
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 …
(DTRT) and enhanced (ETRT) thermal response tests (TRT) are reviewed. The different test …
Natural convection in groundwater-filled boreholes used as ground heat exchangers
JD Spitler, S Javed, RK Ramstad - Applied Energy, 2016 - Elsevier
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 …
pump systems are backfilled with a low permeability grout to prevent water contamination …
Scientific achievements and regulation of shallow geothermal systems in six European countries–A review
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 …
pumps and the existing regulations and/or technical guidelines in selected European …
Distributed thermal response test to analyze thermal properties in heterogeneous lithology
A fiber optic distributed thermal response test (DTRT) conducted in well-documented
heterogeneous geology is combined with laboratory thermophysical measurements of cores …
heterogeneous geology is combined with laboratory thermophysical measurements of cores …