Numerical and experimental study of the performance of bulk-air spray coolers and renewable cooling systems for application in mine ventilation
department or school: Applied Science, Faculty of
department or school: Mining Engineering, Keevil Institute of
data provider: DSpace
degree campus: UBCV
creator: Kuyuk, Ali Fahrettin
issued: 2022-12-22T22:16:12Z
issued: 2022
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: Depletion of shallower resources is challenging modern mining industry to reach deeper deposits to maintain global mineral and raw material demand. As mines grow deeper and get more complex, heat loads associated with production, air compression and geology become an important issue for the health and safety of underground workers. For this purpose, mining industry uses water-based bulk-air spray cooling systems. However, design of these systems is reliant on semi-empirical models that were developed based on restricted empirical data collected from limited chamber size and geometry. Therefore, they often fail to respond when the granularity of the operating parameters such as droplet size, air velocity or chamber geometry is challenged by the application. To mitigate this issue, numerical models can be used effectively. Nevertheless, mining literature is missing an extensive study of these cooling chambers with numerical methods. Moreover, mine air conditioning systems are energy intensive, and their energy performance is highly related to their design. To fill this gap, first, the energy problem associated with conventional mine cooling systems were raised and examined with different case studies. These case studies have shown that, there are alternative cooling solutions for deep-mines, and they could offer similar cooling performances with relatively less capital investment. Then, a fully coupled numerical model that can replace conventional design methods was introduced and validated with series of lab experiments. Literature survey done on similar concepts with applicable scales has shown that earlier studies are mainly investigating evaporative cooling of spray cooling systems without offering a relevant condensation criterion to capture the two-way multiphase physics seen in bulk-air cooling applications. In these terms, this study provided a more inclusive approach by introducing a saturation criterion to Lee’s mass transfer model used in multiphase modelli…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/83501
note: NUMERICAL AND EXPERIMENTAL STUDY OF THE PERFORMANCE OF BULK-AIR SPRAY COOLERS AND RENEWABLE COOLING SYSTEMS FOR APPLICATION IN MINE VENTILATION by Ali Fahrettin Kuyuk B.Sc., Middle East Technical University, 2012 M.Eng., The University of British Columbia, 2014 A DISSERTATION SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in The Faculty of Graduate and Postdoctoral Studies (Mining Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) December 2022 © Ali Fahrettin Kuyuk, 2022 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the dissertation entitled: Numerical and Experimental Study of the Performance of Bulk-Air Spray Coolers and Renewable Cooling Systems for Application in Mine Ventilation submitted by Ali Fahrettin Kuyuk in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Mining Engineering Examining Committee: Seyed Ali Ghoreishi-Madiseh, Assistant Professor, Mining Engineering, UBC Supervisor Ilija Miskovic, Assistant Professor, Mining Engineering, UBC Supervisory Committee Member Nadja Kunz, Assistant Professor, School of Public Policy and Global Affairs, UBC Supervisory Committee Member Xiaotao Bi, Professor, Chemical and Biological Engineering, UBC University Examiner Wenying Liu, Associate Professor, Department of Materials Engineering, UBC University Examiner iii ABSTRACT Depletion of shallower resources is challenging modern mining industry to reach deeper deposits to maintain global mineral and raw material demand. As mines grow deeper and get more complex, heat loads associated with production, air compression and geology become an important issue for the health and safety of underground workers. For this purpose, mining industry uses water-based bulk-air spray cooling systems. However, design of these systems is reliant on semi-empirical models that were developed based on restrict…
has type: Thesis/Dissertation
date issued: 2023-05
is shown at: 10.14288/1.0422833
language: eng
degree discipline: Mining Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Ghoreishi-Madiseh, Seyed Ali
type: Text
identifier URI: http://hdl.handle.net/2429/83501