In situ measurements of thermally loaded rock and evaluation of an experiment with a 3D numerical model

•The rock heating experiment demonstrates the operation of cyclic heat energy storage.•Temperatures and stresses are monitored and fitted by a numerical model.•A uniform elastic modulus is calibrated jointly for model and sensor value conversion.•Stresses and deformation are well explained by the li...

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Bibliographic Details
Published in:International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 2018-05, Vol.105, p.1-10
Main Authors: Rálek, P., Sosna, K., Hokr, M., Franěk, J.
Format: Article
Language:English
Subjects:
COMSOL
Cooling effects
Elasticity
Energy consumption
Energy storage
Energy usage
Granitic massif
Heater experiment
In situ measurement
Low temperature
Mathematical models
Mechanical analysis
Mechanical properties
Metamorphic rocks
Numerical simulation
Physical properties
Radioactive waste disposal
Radioactive wastes
Renewable energy
Rock deformation
Rocks
Storage systems
Stress
Stress changes monitoring
Supply & demand
Sustainability
Thermal analysis
Thermal cycling
Thermal energy
Thermal-stress model
Three dimensional models
Waste disposal
Waste management
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Description
Summary:•The rock heating experiment demonstrates the operation of cyclic heat energy storage.•Temperatures and stresses are monitored and fitted by a numerical model.•A uniform elastic modulus is calibrated jointly for model and sensor value conversion.•Stresses and deformation are well explained by the linear elastic model in most cases.•Energy balance and storage efficiency are calculated by the numerical model.
ISSN:1365-1609
1873-4545
DOI:10.1016/j.ijrmms.2018.01.042