Results 31 to 40 of about 5,412 (233)
Energies, 2018 Borehole thermal resistance is both an important design parameter and a key performance characteristic of a ground heat exchanger. Another quantity that is particularly important for ground heat exchangers is the internal thermal resistance between the ...
Johan Claesson, Saqib Javed
doaj +1 more source
Energy Reports, 2022 Developing shallow geothermal energy with borehole heat exchangers helps energy supply and CO2 emission reduction. This paper comprehensively investigates the influencing factors on heat transfer efficiency of a single borehole heat exchanger based on ...
Zongjun Gao +7 more
doaj +1 more source
Can you take the heat? – Geothermal energy in mining [PDF]
, 2014 In 2013, there are less than 20 documented examples of operational geothermal systems on mine sites worldwide. This is surprising, since on remote mine sites, where fuels may have to be shipped in over great distances, heating and cooling from low ...
Preene, M., Younger, P.L.
core +1 more source
Pipe materials for borehole heat exchangers
European Geothermal Congress 2016, 2016 This paper investigates and evaluates alternative options of higher thermal conductivity as borehole heat exchanger (BHE) piping materials, such as mild steel, galvanized steel, various coating options, stainless steel, copper and its alloys, aluminum, titanium, as well as reinforced polymers and other plastic materials including thermally enhanced ...
Mendrinos, Dimitrios +2 more
openaire +1 more source
The reservoir network: A new network topology for district heating and cooling [PDF]
, 2020 Thermal district networks are effective solutions to substitute fossil fuels with renewable energy sources for heating and cooling. Moreover, thermal networking of buildings allows energy efficiency to be further increased.
Mennel, S +5 more
core
Rudarsko-geološko-naftni Zbornik, 2018 Ground temperature at shallow depth (< 50 m) is not stable, nor in space, neither in time, and its behaviour is the result of superimposition of effects of heat pulses of different origin: solar, geothermal and anthropic. The correct assessment of ground
Francesco Tinti +6 more
doaj +1 more source
THERMAL PERFORMANCE AND CHARACTERISTICS OF SPIRAL-TUBE GROUND HEAT EXCHANGER FOR GROUND-SOURCE HEAT PUMP [PDF]
, 2014 This study investigates thermal performance and characteristics of spiral-tube ground heat exchanger (GHE) for ground source heat pump in laminar and turbulent flows. The thermal performances are evaluated by numerical method using a CFD code.
Jalaluddin
core +1 more source
Formulation of a 1D finite element of heat exchanger for accurate modelling of the grouting behaviour: Application to cyclic thermal loading [PDF]
, 2016 This paper presents a comprehensive formulation of a finite element for the modelling of borehole heat exchangers. This work focuses on the accurate modelling of the grouting and the field of temperature near a single borehole.
Al-Khoury +59 more
core +3 more sources
Assessing the impact of vertical heat exchangers on the response of a retaining wall [PDF]
E3S Web of Conferences, 2019 Shallow geothermal energy systems, e.g. borehole heat exchangers or thermo-active structures, provide sustainable space heating and cooling by exchanging heat with the ground.
Sailer Eleonora +3 more
doaj +1 more source
Thermal stresses in borehole heat exchangers
International Journal for Numerical and Analytical Methods in Geomechanics, 2015 SummaryThe backfilling materials of borehole heat exchangers (BHE), particularly the grout material, must provide a suitable thermal contact and ensure durability to the induced thermal stresses because of the heat loading. In this paper, the thermal stresses that occurred in BHEs because of heat injection or extraction is investigated with an ...
Erol, Selcuk, François, Bertrand
openaire +4 more sources