Results 21 to 30 of about 1,013,313 (306)

Comparative Analysis of Geothermal Energy in Korea Based on Closed Borehole and Single- and Two-Well Standing Column Well Geothermal Heat Exchange Systems

Applied Sciences, 2020
In this study, a mobile measuring device was developed and a thermal response test that applied a standing column well-type heat exchanger was conducted to obtain design parameters from field measurements.
Jangyoul You, Changhee Lee
doaj   +1 more source

A New Method Based on Thermal Response Tests for Determining Effective Thermal Conductivity and Borehole Resistivity for Borehole Heat Exchangers

Energies, 2019
Research on borehole heat exchangers is described on the development of a method for the determination, based on thermal response tests, of the effective thermal conductivity and the thermal resistivity for borehole heat exchangers.
Aneta Sapińska-Sliwa, Marc A. Rosen, Andrzej Gonet, Joanna Kowalczyk, Tomasz Sliwa   +4 more
doaj   +1 more source

Critical Review on Efficiency of Ground Heat Exchangers in Heat Pump Systems

Clean Technologies, 2020
Use of ground source heat pumps has increased significantly in recent years for space heating and cooling of residential houses and commercial buildings, in both heating (i.e., cold region) and cooling (i.e., warm region) dominated climates, due to its ...
Adel Eswiasi, Phalguni Mukhopadhyaya
doaj   +1 more source

Analysis of Relaxation Time of Temperature in Thermal Response Test for Design of Borehole Size

Energies, 2020
A new practical method for thermal response test (TRT) is proposed herein to estimate the groundwater velocity and effective thermal conductivity of geological zones.
Hobyung Chae, Katsunori Nagano, Yoshitaka Sakata, Takao Katsura, Ahmed A. Serageldin, Takeshi Kondo   +5 more
doaj   +1 more source

Estimation of the vertical borehole thermal parameters based on the evolution algorithm using temperature response functions [PDF]

Estonian Journal of Earth Sciences, 2019
The vertical borehole ground heat exchange performance is still the issue for the engineers installing vertical borehole ground plants using ground-coupled heat pumps.
Audrius Indriulionis, Petras Šinkūnas, Robert Mokrik   +2 more
doaj   +1 more source

Quantitative sensory testing in children with sickle cell disease: additional insights and future possibilities. [PDF]

, 2019
Quantitative sensory testing (QST) is used in a variety of pain disorders to characterize pain and predict prognosis and response to specific therapies.
Brown, Dawn S., Byck, Hal, Campbell, Claudia M., Gayen-Betal, Suhita, Hegarty, Sarah E., Keith, Scott W., McCahan, Suzanne M., Miller, Robin E., Setty, Yamaja, Stuart, Marie   +9 more
core   +2 more sources

Effective Thermal Conductivity and Borehole Thermal Resistance in Selected Borehole Heat Exchangers for the Same Geology

Energies, 2022
Investigating the constructions of borehole heat exchangers with high efficiency (unit heat transfer between the heat carrier and ground) is important. One of the means to improve efficiency is the use of the most efficient construction of the borehole ...
Tomasz Sliwa, Patryk Leśniak, Aneta Sapińska-Śliwa, Marc A. Rosen   +3 more
doaj   +1 more source

Flow-controlled thermal response test and its comparison with the conventional test methods [PDF]

Geothermics, 2023
A novel flow-controlled (FC) thermal response test (TRT) system is introduced to resolve the recently addressed inconsistency between the constant heat flux (CHF) and constant temperature (CT) TRTs. FC-TRT allows us to keep both inlet and outlet temperatures constant and improve the accuracy of CT-TRT.
Murat Aydin, Ayse Ozdogan Dolcek, Mustafa Onur, Altug Sisman   +3 more
openaire   +3 more sources

Reduced Scale Experimental Modelling of Distributed Thermal Response Tests for the Estimation of the Ground Thermal Conductivity

Energies, 2021
The knowledge of the ground thermal properties, and in particular the ground thermal conductivity is fundamental for the correct sizing of the Ground Coupled Heat Pump (GCHP) plant.
Stefano Morchio, Marco Fossa, Antonella Priarone, Alessia Boccalatte   +3 more
doaj   +1 more source

Thermal Response Test (TRT) – System for Measurement of Thermal Response of Rock Massif

IFAC Proceedings Volumes, 2013
Abstract The article describes an experimental system for measuring the temperature response of the rock massif known as the Thermal Response Test (TRT), its activity and usage patterns. The response of the rock mass is represented by the value of thermal conductivity of rocks Λ, which characterizes the ability of rocks to conduct the heat ...
R. Hajovsky, P. Vojcinak, M. Pies, J. Koziorek   +3 more
openaire   +1 more source