Results 271 to 280 of about 314,980 (299)
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Stochastic interpretation of thermal response test with TRT-SInterp
Computers & Geosciences, 2015A program designed to analyze thermal response tests by deterministic or stochastic inversion is presented. In its current state, the program treats variable heating power signals and emulates a borehole heat exchanger by a finite line-source model or a thermal resistance and capacity model.
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Oscillatory thermal response tests to estimate the ground thermal diffusivity
Applied EnergyThermal Response Tests (TRT) have been extensively studied in the past decades and is an important area of research belonging to ground heat exchanger design. The most important thermal property inferred in a TRT is the equivalent subsurface thermal conductivity.
Lamarche, Louis +2 more
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Thermal Response Tests and effects of geological heterogeneity
Rendiconti online della Società Geologica Italiana, 2014The low enthalpy geothermal energy can significantly limit the use of fossil fuels and contribute effectively to reduce greenhouse gas emissions. This source of energy can be exploited through geothermal plants where closed-loop geothermal probes represent the main configuration. These are easy to install, have a simplified authorization procedure and,
Colucci, Francesca, Moia, Fabio
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Analysis of the first thermal response test in Algeria
Journal of Thermal Analysis and Calorimetry, 2011Ground source heat pumps (GSHPs) mean attractive heating and cooling systems. Optimum design of a borehole heat exchanger (BHE), as the outer part of a GSHP heating system, requires knowledge of the thermal properties of the soil. Those data, the effective thermal conductivity of the soil λeff and the average temperature of the soil T 0
M. A. Boukli Hacene +2 more
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In Situ Thermal Response Test Methods And Practices
Advanced Materials Research, 2011Abstract. As a high efficiency, low consumption and clean energy, ground source heat pump technology has been pay more and more attention, the number of installation of system is growing rapidly. However, the use of geothermal resources is still extensive at this stage.
Qiang Li, You Hong Sun, Xin Fang
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Simulation of thermal response tests in a layered subsurface
Applied Energy, 2013Abstract A conventional thermal response test (TRT) provides a bulk estimate of the subsurface and borehole thermal properties over the length of the ground heat exchanger (GHE). The measurement of temperature inside the borehole during a TRT can be carried out to further determine thermal properties at different depths. The analysis of the transient
J. Raymond, L. Lamarche
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The influence of the thermosiphon effect on the thermal response test
Renewable Energy, 2003The issue of natural and forced groundwater movements, and its effect on the performance of ground heat exchangers is of great importance for the design and sizing of borehole thermal energy systems (BTESs). In Scandinavia groundwater filled boreholes in hard rock are commonly used.
S.E.A. Gehlin, G. Hellström, B. Nordell
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Determination of ground thermal properties for energy piles by thermal response tests
Environmental Earth Sciences, 2018Thermal properties of ground heat exchanger (GHE) such as effective thermal conductivity and borehole thermal resistance are commonly measured in the field by thermal response tests (TRTs). TRT has been proved to be a consolidated method to determine thermal properties of traditional borehole heat exchangers (BHEs). However, there is still lack of data
Jin Luo +5 more
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Distributed thermal response test to analyze thermal properties in heterogeneous lithology
Geothermics, 2018Abstract A fiber optic distributed thermal response test (DTRT) conducted in well-documented heterogeneous geology is combined with laboratory thermophysical measurements of cores and novel data analysis techniques to provide a detailed description of variability in subsurface heat transfer.
Adam McDaniel +5 more
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Diurnal variation in response to thermal stimulation: Mouse-hotplate test
Physiology & Behavior, 1977Abstract Circadian changes in pain thresholds were assessed in 70-day-old CF1 male mice. The hotplate method was used. A different group of 15 mice was tested every 3 hr over a 48 hr interval. Response latencies were found to vary in a sinusoidal manner over a 24 hr interval.
R S, Crockett +2 more
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