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Browsing by Supervisor "Xia, Xiaohua"
Now showing items 1-20 of 43
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(University of Pretoria, 2017)Multiple drive belt conveyors are being increasingly incorporated in mining plans worldwide because of their high economic performance and the ease of moving these installations around, especially in underground mines. A ...
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(University of Pretoria, 2017)In the mining industry, methods to reduce the fuel consumed in the haulage operations are largely sought as a result of the growing energy demand, fuel cost increases and adverse environmental impacts due to the emission ...
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(University of Pretoria, 2017)This thesis develops methods for reducing energy Measurement and Verification (M&V) costs through the use of Bayesian statistics. M&V quantifies the savings of energy efficiency and demand side projects by comparing the ...
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(University of Pretoria, 2017)The building energy efficiency has received massive attention from the government, industry and academia, due to the mismatch between the shortage of energy resources and the growing energy demands. The building is a complex ...
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(University of Pretoria, 2006-12-15)Current research on HIV therapy is diverse and multi-disciplinary. Engineers however, were late in joining the research movement and as such, engineering literature related to HIV chemotherapy is limited. Control engineers ...
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(University of Pretoria, 2015)In this study, a measurement and verification (M&V) cost minimisation model is proposed to deal with both the M&V modelling and sampling uncertainties. In order to find the optimal solutions in terms of the modelling ...
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(University of Pretoria, 2006-06-13)This dissertation is primarily concerned with dynamic HIV/AIDS parameter estimation, set against the background of engineering, biology and medical science. The marriage of these seemingly divergent fields creates a dynamic ...
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(University of Pretoria, 2016)This work deals with the energy management of belt conveyor systems (BCS) under various demandside management (DSM) programmes. The primary objective of this work is to model the energy consumption and energy related ...
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(University of Pretoria, 2018)The dynamic mathematical models for direct expansion air conditioning (DX A/C) systems with respect to indoor carbon dioxide (CO2) concentration, relative humidity and air temperature and the coupling effects among them ...
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(University of Pretoria, 2015)Renewable energy-based hybrid systems have become attractive energy supply options in many countries because of global environmental concerns, access to electricity, and depleting and rising cost of fossil fuel resources. ...
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(University of Pretoria, 2020)The lighting retrofit method is adopted as one of the solutions to reduce lighting energy consumption and improve lighting quality in existing buildings. Lighting controls and energy-efficient light sources are used to ...
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(University of Pretoria, 2013)The contributions of this thesis lie in the area of global finite-time observer design for a class of nonlinear systems with bounded rational and mixed rational powers imposed on the incremental rate of the nonlinear ...
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(University of Pretoria, 2014)An energy saving opportunity exists in mining and smelting industries such as the Ferrochrome industry, in the form of waste heat extraction and recovery. The mining and smelting of metals requires the use of high-power, ...
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(University of Pretoria, 2015)This dissertation focuses on daily volt/var control in distribution networks with feeder capacitors, substation capacitors and transformers equipped with on-load tap changers. A hybrid approach is proposed to solve the ...
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(University of Pretoria, 2021)Greenhouse cultivation can increase crop yield and alleviate the food shortage caused by population growth and reduction of arable land. However, the greenhouse production process consumes lots of energy and water. The ...
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The impact of social networks on energy efficiency projects : the information propagation approach (University of Pretoria, 2015)There are many reasons why energy efficiency projects are carried out; to reduce electricity and water usage, cut greenhouse gas emissions and to promote the conservation of biodiversity. A common factor is that humans ...
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(University of Pretoria, 2014)An improved model for reducing the cost of long-term monitoring in Clean Development Mechanism (CDM) lighting retrofit projects is proposed. Cost-effective longitudinal sampling designs use the minimum number of meters ...
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(University of Pretoria, 2023)Detailed steady and transient state models of vapor compression (VC) systems have been suggested in this work so that the governing parameters of the refrigerant dynamics such as pressure, enthalpy and temperature could ...
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(University of Pretoria, 2011-10-10)The maintenance schedule of generators in power plants needs to match the electricity demand and needs to ensure the reliability of the power plant at a minimum cost of operation. In this study, a comparison is made between ...
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(University of Pretoria, 2008-10-01)This dissertation focuses on the modelling, identification and the parameter estimation for the co-infection of HIV-1 and M. tuberculosis. Many research papers in this field focus primarily on HIV, but multiple infections ...
Now showing items 1-20 of 43