Numerical and analytical study of a geo‐exchange borehole using conventional grout and bentonite‐based backfilling material
Sign Up to like & getrecommendations! Published in 2021 at "International Journal of Energy Research"
DOI: 10.1002/er.6684
Abstract: Ground source heat pumps (GSHP) have been used in various types of residential and commercial buildings due to their high efficiency. Numerical models are useful to predict the overall performance and ground temperature response of… read more here.
Keywords: borehole; bentonite based; heat; model ... See more keywords
Monte Carlo simulation of Cu, Ni and Fe grade determination in borehole by PGNAA technique
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Radioanalytical and Nuclear Chemistry"
DOI: 10.1007/s10967-017-5636-9
Abstract: A prompt gamma neutron activation analysis borehole logging method for copper, nickel and iron grade estimation is proposed. The performance of the method was simulated by MCNP5 code. Based on the theory of neutron–gamma distribution… read more here.
Keywords: monte carlo; borehole; carlo simulation; gamma ... See more keywords
Rapid water-rock interactions evidenced by hydrochemical evolution of flowback fluid during hydraulic stimulation of a deep geothermal borehole in granodiorite: Pohang, Korea
Sign Up to like & getrecommendations! Published in 2019 at "Applied Geochemistry"
DOI: 10.1016/j.apgeochem.2019.104445
Abstract: Flowback water from the 4215 m deep (True Vertical Depth) PX-1 borehole, following the August 2017 hydraulic stimulation of a granodiorite geothermal reservoir in Pohang, South Korea, was monitored for a suite of physicochemical, chemical and… read more here.
Keywords: pohang; flowback water; water; stimulation ... See more keywords
Transient heat transfer simulation, analysis and thermal performance study of double U-tube borehole heat exchanger based on numerical heat transfer model
Sign Up to like & getrecommendations! Published in 2020 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2020.115189
Abstract: Abstract This paper proposes numerical unsteady heat transfer model that predicts the transient heat transfer in the double U-tube borehole heat exchanger (BHE) where the U-tubes can operate with either different or equal mass flow… read more here.
Keywords: borehole; model; performance; heat transfer ... See more keywords
Study on the influence of borehole spacing considering groundwater flow and freezing factors on the annual performance of the ground source heat pump
Sign Up to like & getrecommendations! Published in 2021 at "Applied Thermal Engineering"
DOI: 10.1016/j.applthermaleng.2020.116042
Abstract: Abstract Considering freezing and groundwater flow simultaneously, a three-dimensional finite element dynamic simulation platform of the ground source heat pump system (GSHPS) is established, and the GSHPS performance in an office building is analyzed by… read more here.
Keywords: groundwater flow; borehole; performance; considering freezing ... See more keywords
Validation of borehole heat exchanger models against multi-flow rate thermal response tests
Sign Up to like & getrecommendations! Published in 2018 at "Geothermics"
DOI: 10.1016/j.geothermics.2017.08.006
Abstract: A recently developed vertical borehole ground heat exchanger model that accounts for transit time effects and time-varying short-circuiting heat transfer has been validated against two multi-flow-rate thermal response tests (MFR-TRT). The MFR-TRT, when performed with… read more here.
Keywords: flow rate; heat exchanger; borehole; model ... See more keywords
Experimental and measured research on three-dimensional deformation law of gas drainage borehole in coal seam
Sign Up to like & getrecommendations! Published in 2020 at "International journal of mining science and technology"
DOI: 10.1016/j.ijmst.2020.04.001
Abstract: Abstract Using self-researched gas drainage borehole stability dynamic monitoring device, three-dimensional deformation characteristics of borehole under steady vertical load were researched experimentally and systematically. This research indicated that under the action of steady loading, the… read more here.
Keywords: strain; drainage borehole; borehole; gas drainage ... See more keywords
The influence of borehole arrangement of soundless cracking demolition agents (SCDAs) on weakening the hard rock
Sign Up to like & getrecommendations! Published in 2021 at "International journal of mining science and technology"
DOI: 10.1016/j.ijmst.2021.01.005
Abstract: Abstract The hard roof difficult to collapse easily causes gas accumulation, which threatens the production safety of coal mine. Therefore, roof pre-cracking is required. Although blasting and hydraulic fracturing can also crack the roof, blasting… read more here.
Keywords: agents scdas; borehole; soundless cracking; cracking demolition ... See more keywords
Numerical solution for borehole methane flow in coal seam based on a new dual-porosity model
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Natural Gas Science and Engineering"
DOI: 10.1016/j.jngse.2019.102916
Abstract: Abstract: The mechanism and mathematical characterisation of a gas flow in a coal seam are used to prevent methane disasters, guide gas drainage problems and promote the development of coalbed methane. A borehole gas flow… read more here.
Keywords: gas; coal seam; flow; borehole ... See more keywords
A reassessment of the stress and natural fracture orientations from analysis of image logs in the Chinese Continental Scientific Drilling Program borehole at Donghai county, Jiangsu province, China
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Asian Earth Sciences"
DOI: 10.1016/j.jseaes.2018.10.014
Abstract: Abstract The Chinese Continental Scientific Drilling (CCSD) project has drilled a 5100 m deep research borehole in the Sulu ultra-high pressure (UHP) metamorphic belt, eastern China. The UHP metamorphic belt is thought to be a product… read more here.
Keywords: borehole; drilling; chinese continental; continental scientific ... See more keywords
Field-scale permeability and temperature of volcanic crust from borehole data: Campi Flegrei, southern Italy
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Volcanology and Geothermal Research"
DOI: 10.1016/j.jvolgeores.2018.05.003
Abstract: Abstract We report combined measurements of petrophysical and geophysical parameters for a 501-m deep borehole located on the eastern side of the active Campi Flegrei caldera (Southern Italy), namely (i) in situ permeability by pumping… read more here.
Keywords: borehole; permeability; campi flegrei; southern italy ... See more keywords