The thermal behaviour of three different auger pressure grouted piles used as heat exchangers [PDF]
, 2014 Three auger pressure grouted (APG) test piles were constructed at a site in Richmond, Texas. The piles were each equipped with two U-loops of heat transfer pipes so that they could function as pile heat exchangers.
Brettmann, T +11 more
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Heat balance of horizontal ground heat exchangers
Ecological Chemistry and Engineering S, 2018 This work refers to the modelling of heat transfer in horizontal ground heat exchangers. For different conditions of collecting heat from the ground and different boundary condition profiles of temperature in the ground were found, and temporal variations of heat flux transferred between the ground surface and its interior were determined. It was taken
Krzysztof Kupiec, Monika Gwadera
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Finite element modeling of geothermal source of heat pump in long-term operation [PDF]
E3S Web of Conferences, 2020 Heat pumps become more and more popular heat source. They can be an alternative choice for obsolete coal fired boilers which are emissive and not ecological.
Hałaj Elżbieta
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Laboratory assessment of corrosion rate of carbon steel ground heat exchangers [PDF]
Advances in Geosciences, 2022 The materials used in the manufacture of geothermal heat exchangers for shallow geothermal applications play an important role in the overall system performance, especially if grout is not being used to seal the boreholes in which the heat exchanger is ...
G. Cadelano +8 more
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Heat transfer characteristics of in-ground heat exchangers
International Journal of Energy Research, 1983 Most in-ground heat storage installations use a system of horizontal or vertical plastic pipes to carry heat exchanger fluid. In designing these systems it is generally assumed that the thermal effects of the plastic pipe can be neglected. This paper reports a laboratory study of the pattern of heat flow around fluid-carrying plastic pipe buried in ...
Svec, O. J. +2 more
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Comparison of Earth-Air and Earth-Water Ground Tube Heat Exchangers for Residentialal Application [PDF]
, 2012 Earth-air systems are already commonly applied as a passive technique to reduce the overall energy use of buildings by reducing the required cooling or heating demand. However, they often require large surface area for their installation, and make use of
Liu, Liping +2 more
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Comparison of two different models for pile thermal response test interpretation [PDF]
, 2014 Thermal response tests (TRTs) are regularly used to characterise the thermal resistance of borehole heat exchangers and to assess the thermal conductivity of the surrounding ground.
Loveridge, F.A. +8 more
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Coaxial Pipes Used as Ground Buried Heat Exchangers—A Review of Research in Recent Years
BuildingsThe efficient utilization of geothermal energy depends heavily on high-performance ground heat exchangers. Coaxial pipe is a high-efficiency heat exchanger composed of two nested tubes of different diameters.
Geng Wang +6 more
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Geothermal Boreholes in Poland—Overview of the Current State of Knowledge
Energies, 2021 Geothermal energy can be useful after extraction from geothermal wells, borehole heat exchangers and/or natural sources. Types of geothermal boreholes are geothermal wells (for geothermal water production and injection) and borehole heat exchangers (for ...
Tomasz Sliwa +4 more
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A new modelling approach for piled and other ground heat exchanger applications [PDF]
, 2015 Pile heat exchangers have an increasing role to play in the delivery of renewable heating and cooling energy. Traditionally the thermal design of ground heat exchangers has relied upon analytical approaches which take a relatively simple approach to the ...
Gajo, A. +7 more
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