Results 41 to 50 of about 210,641 (265)
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
Study of Methods and Development of Technological Scheme for Heat Removal from Rock Waste Dump [PDF]
, 2017 The aim of this paper is to study the methods and develop technological scheme for thermal energy removal from coal mine rock waste dumps. The prospects of renewable energy sources development in Ukraine are analyzed.
Saik, Pavlo
core +1 more source
Energies, 2021 In this numerical study, 4 types of hybrid nanofluid, including Ag-MgO/water, TiO2-Cu/water, Al2O3-CuO/water, and Fe3O4-multi-wall carbon nanotube/water, have been considered potential working fluid in a single U-tube borehole heat exchanger.
H. Javadi +3 more
semanticscholar +1 more source
Comparison of simulation tools for optimizing borehole heat exchanger field operation
Geothermal EnergyModel predictive control (MPC) is a promising approach for optimizing the performance of borehole heat exchangers (BHEs) in ground-source heat pump systems. The central element of MPC is the forward model that predicts the thermal dynamics in the ground.
Elisa Heim +6 more
semanticscholar +1 more source
Case Studies in Thermal Engineering, 2021 The clogging problem during injection seriously limits the development and utilization of geothermal resources in unconsolidated sandstone area.
Yanxin Wang, Xianbiao Bu
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 +2 more sources
Coupling of energy conversion systems and wellbore heat exchanger in a very deep oil well [PDF]
, 2016 The conventional geothermal power plants use the reinjection wells mostly to avoid the depletion of the geothermal reservoir gathering in the underground of the produced brine.
Alimonti, Claudio +3 more
core +1 more source
The numerical simulation of utilizer of soil heat and heat receiver in joint operation [PDF]
, 2012 The numerical model of the joint work of borehole heat exchanger and evaporator of the heat pump is developed. The design of the evaporator is shelltube heat exchanger with segmental baffles with a boiling in the U-shaped tubes.
Filatov, S. A., Valodin, V. I.
core
Deep Underground Science and Engineering, EarlyView.This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley +1 more source
Measurements and Design Calculations for a Deep Coaxial Borehole Heat Exchanger in Aachen, Germany
International Journal of Geophysics, 2013 This study aims at evaluating the feasibility of an installation for space heating and cooling the building of the university in the center of the city Aachen, Germany, with a 2500 m deep coaxial borehole heat exchanger (BHE). Direct heating the building
Lydia Dijkshoorn +2 more
doaj +1 more source