Research
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Development and validation of enthalpy-porosity method for artificial ground freezing under seepage conditions
Abstract
Groundwater flow has an undesirable effect on ice growth in artificial ground freezing (AGF) process: high water flow could hinder the hydraulic sealing between two freeze pipes. Therefore, a reliable prediction of the multiphysics groun...
Publication · January 11, 2026
Freezing on demand (FoD): An energy saving technique for artificial ground freezing
Abstract
The artificial ground freezing (AGF) systems are typically designed to operate continuously for two main reasons: (i) to maintain a certain thickness of the frozen barrier which strengthens the ground’s structure, and (ii) to stop ground...
Publication · January 11, 2026
Renewable energy-based artificial ground freezing as an adaptation solution for sustainability of permafrost in post-climate change conditions
Abstract
Climate change is expected to impose higher ground temperatures, seriously challenging the sustainability of permafrost regions by thawing irreversibly, compromising ground stability and causing high seepage flows. Mining operations are ...
Publication · January 11, 2026
Conjugate heat transfer in artificial ground freezing using enthalpy-porosity method: Experiments and model validation
Abstract
Artificial ground freezing (AGF) system is a temporary excavation-support method that is used in underground mines and tunneling projects to improve and stabilize ground structure, and to control groundwater seepage. The conjugate heat t...
Publication · January 11, 2026
Performance evaluation of ground-coupled seasonal thermal energy storage with high resolution weather data: Case study of Calgary Canada
Abstract
The interest in harnessing renewable sources of energy for space heating in residential applications has increased in recent decades due in part to their cost benefits and an increase in environmental awareness. The proposed system uses ...
Publication · January 11, 2026
Thermal performance optimization of a bayonet tube heat exchanger
Abstract
A bayonet tube heat exchanger is typically a pair of concentric tubes, the outer of which has a closed end that creates a clearance pass between the inner and annulus tube. This paper evaluates the impact of key parameters and operating ...
Publication · January 11, 2026
Intermittent freezing concept for energy saving in artificial ground freezing systems
Abstract
The artificial ground freezing (AGF) system is widely used in underground mines, shaft sinking, civil, and tunneling applications for stabilization of underground structures, and for hydraulic sealing. This system, however, incurs intens...
Publication · January 11, 2026
Investigation of two-phase frictional pressure drop and thermal entrance length in a minichannel helical heat exchanger
Abstract
Experimental investigations are conducted to determine the two-phase frictional pressure drop of refrigerant R134a and the thermal entrance length for flow in a helically coiled mini-tube of 2mm inner diameter. The objective of this work...
Publication · January 11, 2026
Characterization of energy efficient vapor compression cycle prototype with a linear compressor
Abstract
In this paper, an experimental vapour compression cycle (VCC) prototype is developed. The VCC system composes of a high performance 300W linear compressor with variable capacity control, expansion valve, air-cooled condenser, and two mic...
Publication · January 11, 2026
Characterization of an open-loop seasonal thermal energy storage system
Abstract
The interest in the underground seasonal thermal energy storage system as a renewable energy option for residential applications increases in the recent decades. The system, basically, uses the shallow ground as an energy reservoir that ...
Publication · January 11, 2026
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