Summit AwardAPEGA Summit Award Winner: Women in Engineering and Geoscience Champion Award, for co-chairing Canadian Coalition of Women in Engineering Science, Trades and Technology (CCWESTT) 2018, Biennial Conference | Award | 2019-04-23 | Lianne Michelle Lefsrud |
Application of Simultaneous Time-Resolved 3-D PTV and Two-colour LIF in Studying Rayleigh-Benard | Publication | 2021-08-01 | Sina Kashanj, David S. Nobes |
Approximations for use in cycling thermodynamic systems: Applications for Stirling engines | Publication | 2020-06-27 | Steven Middleton, David S. Nobes |
Calculation Of The Nusselt Number From Temperature And Velocity Data Obtained From Enhanced 3D Two-Colour LIF And 3D PTV In A Rayleigh-Benard Convection Cell | Publication | 2023-07-11 | Sina Kashanj, "Yeganeh Saffar", "Reza Sabbagh", David S. Nobes |
Dynamic Modelling of Low Temperature Stirling Engines | Publication | 2018-09-19 | Steven Middleton, David S. Nobes |
Early Development of a 100 Watt Low Temperature Difference Stirling Engine | Publication | 2020-06-27 | Matthias Lottmann, Zachary Christopher De Rouyan, Linda Hasanovich, Steven Middleton, Michael Nicol-Seto, Connor Speer, David S. Nobes |
Effect of Heat Exchanger and Engine Geometry on Power Output of a Low Temperature Difference Stirling Engine | Publication | 2023-03-26 | Linda Hasanovich, David S. Nobes |
Effect of Scaling Up Low Temperature Differential Stirling Engines, 18th ISEC International Stirling Engine Conference, Tainan, Taiwan, Sept 19-21, 2018 C5. Nicol-Seto, M., Michaud, J., Middleton, S., and Nobes, D.S. (2018) Non-Traditional Drive Mechanism | Publication | 2018-09-19 | Calynn Stumpf, Alexander Hunt, David S. Nobes |
Investigation Into The Onset Of Turbulent Rayleigh-Benard Convection Using Time-Resolved 2-D Particle Image Velocimetry | Publication | 2020-06-27 | Sina Kashanj, David S. Nobes |
Investigations into the effect of heat exchanger volume and geometry on low-temperature Stirling engine performance | Publication | 2020-06-27 | Linda Hasanovich, David S. Nobes |
Non-Traditional Drive Mechanism Designs for the Improvement of Heat Transfer in Low Temperature Differential Stirling Engines | Publication | 2018-09-19 | Michael Nicol-Seto, Jason Michaud, Steven Middleton, David S. Nobes |
Performance of a Modified Drive Mechanism on a Low Temperature Differential Stirling Engine | Publication | 2020-06-27 | Michael Nicol-Seto, David S. Nobes |
Performance of ST05G-CNC Stirling Engine Modified for Operation with Reduced Source Temperature | Publication | 2018-09-19 | Connor Speer, David Miller, David S. Nobes |
Preliminary Design of a Hollow Displacer for a Low Temperature Difference Stirling Engine | Publication | 2020-06-27 | Zachary Christopher De Rouyan, Connor Speer, David S. Nobes |
Role of Large-Scale Circulating Structures in Mixed Convection of Poiseuille-Rayleigh-Benard Convection | Publication | 2023-03-26 | Sina Kashanj, David S. Nobes |
Evaluation Of A Low Temperature Stirling Engine Using A Discontinuous Thermodynamic Cycle | Activity | 2019-04-14 | Michael Nicol-Seto, David S. Nobes |
Modular one-dimensional simulation tool for oscillating flow and thermal networks in Stirling engines | Activity | 2019-04-14 | Steven Middleton, David S. Nobes |
Effect of Heat Exchanger Volume and Geometry on Power Output of a Low Temperature Difference Stirling Engine | Publication | 2022-09-20 | Linda Hasanovich |
Experimental Investigation of Stirling Engine Modelling Techniques at Reduced Source TemperaturesMSc Thesis | Publication | 2019-05-02 | David Miller |
Investigation of a Drive Mechanism Modification to Increase Thermodynamic Power of a Low Temperature Differential Gamma Type Stirling Engine | Publication | 2021-09-20 | Michael Nicol-Seto |
Low Temperature Difference Alpha-Type Stirling Engine for the Experimental Determination of Optimal Parameters to Maximize Shaft PowerMSc Thesis | Publication | 2020-01-13 | Jason Michaud |
Parameter Optimization of a Low Temperature Difference Gamma-Type Stirling Engine to Maximize Shaft Power | Publication | 2019-01-22 | Calynn Stumpf |
Post finishing techniques to improve the functionality of 3D printed partsMSc Thesis | Publication | 2019-07-08 | Gabriel Salata |
Stirling Engines and Single-Phase Thermodynamic MachinesA numerical model and software interface for the design and modelling of Stirling engines was
presented. This model was developed to suit low-temperature Stirling engines, those that run at
source temperature of less than 150 °C and run at speeds where temporarily developed losses
become significant. The work had three objectives. The first was to create a combined mechanical
and thermodynamic model to solve dynamic problems. The second objective was to provide
graphical feedback during creation of the geometry and reviewing of a solution. The third objective
was to test the model against experimental data taken from a low-temperature gamma-type engine
and compare the model against another numerical code. | Publication | 2021-04-26 | Steven Middleton |
Validation and Testing of a Numerical Model for the Design and Up-Scaling of Low Temperature Difference Stirling Engines | Publication | 2022-09-20 | Matthias Lottmann |
A numerical study on compositional modeling of two-phase fluid flow and heat transfer in vertical wells.Geothermal energy is a sustainable and renewable source that can be extracted by circulating a single- or two-phase fluid through a geothermal well system. Two-phase flow and heat transfer models are required for predicting pressure and temperature profiles in oil, gas, and geothermal wells. We model fluid flow, thermodynamics and heat transfer in an idealised vertical well for single-(i.e., water) and two-phase fluid mixtures (CO2-, and air-water) under a bubbly flow regime. First, we calibrated a Peng-Robinson Equation of State (PR-EOS) for CO2-, and air-water systems. Second, we solved continuity, energy and momentum equations and modelled transient conductive heat transfer through the well.. Third, we investigated the effects of mass flow rate, transient heat transfer, single- and two-phase fluid on the extracted power, temperature, and pressure profiles of the deep well bore heat exchanger. The results show that the temperature of the hot fluid decreases as it flows to the surface both in the case of adiabatic flow and in cases with heat loss. The mass flow rate controls the fluid temperature drop during its ascent to the surface (∆T of 11.2 °C and 87.8 °C at mass flow rates of 7 kg/s and 0.02 kg/s, respectively). The production pressure of a gas-liquid phase system is higher than that of a system with single liquid phase at the same injection pressure, temperature, and mass flow rate. Increasing mass flow rate up to a threshold value leads to an increase in the production pressure. Above the threshold mass flow rate (i.e., 7 kg/s in this study), the production pressure reduces because of the significant increase in the frictional pressure drop. Production temperature, production pressure, and total power increases over time due to the local heating around the production well and reduction of the heat loss. | Publication | 2021-05-12 | Sara Eghbali, Jonathan C. Banks, David S. Nobes |
Application of 4D two-colour LIF to explore the temperature field of laterally confined turbulent Rayleigh–Bénard convection. | Publication | 2023-01-26 | Sina Kashanj, David S. Nobes |