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- Browsing Theses and Dissertations (Chemical Engineering) by Supervisor
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Browsing Theses and Dissertations (Chemical Engineering) by Supervisor "Majozi, Thokozani"
Now showing items 1-15 of 15
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(University of Pretoria, 2013)Cooling water systems are used to remove excess heat from a chemical process to the atmosphere. The primary components of these systems are the cooling tower and the heat exchanger network. There is a strong interaction ...
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(University of Pretoria, 2011-10-21)The integrated gasification combined cycle (IGCC) is the most environmentally friendly coal-fired power generation technology that offers near zero green house gas emissions. This technology has higher thermal efficiency ...
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(University of Pretoria, 2008-07-07)The successful industrial applications of pinch analysis techniques in energy optimisation and wastewater minimisation have resulted in the recent studies of combined mass and heat integration. Kim and Smith (2001) have ...
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(University of Pretoria, 2008-09-25)As the pressure on the chemical and process industries to improve environmental and economic performance increases, the need to move away from narrow system definitions and concepts in environmental system management is ...
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(University of Pretoria, 2011)Most of the methodologies published in literature on wastewater minimisation for batch processes are based on short-term scheduling techniques. When these methods are applied to longer time horizons, the computational ...
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(University of Pretoria, 2013)In recent years, batch processes have been getting more attention due to their suitability for the production of small volume, high value added products. The flexibility of batch plants allows the production of different ...
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(University of Pretoria, 2008-09-08)A novel operational policy, the Process Intermediate Storage (PIS) operational policy, is introduced and used to synthesize, schedule and design multipurpose batch plants. The model is based on the State Sequence Network ...
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(University of Pretoria, 2016)Heat integration to optimise energy usage becomes a possibility if a process includes both heat generating and heat consuming operations. Heat integration in batch plants has in the past been largely disregarded as utility ...
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(University of Pretoria, 2011-10-21)Cooling water systems are generally designed with a set of heat exchangers arranged in parallel. This arrangement results in higher cooling water flowrate and low cooling water return temperature thus reducing cooling tower ...
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(University of Pretoria, 2016)This work presents a revised methodology to minimise pressure drop through a steam system heat exchanger network (HEN). This is based on previous work where network pressure drop is minimised after utility flow through the ...
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(University of Pretoria, 2013)Steam is a commonplace utility in chemical processing plants across the globe. The many benefits of steam ensure its continued use, but concerns about the cost of energy and of the equipment associated with steam systems ...
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(University of Pretoria, 2008-09-05)Steam boilers are used to generate steam in order to meet cold process heat requirements. The most common heat exchanger network layout associated with the boiler is a completely parallel design. This observation suggests ...
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(University of Pretoria, 2015)Heat integration is a popular method for minimising the energy needs of a chemical plant, and also for optimising the accompanying utility systems. In conventional practice, the regions of process-process heat integration, ...
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(University of Pretoria, 2017)Water and energy are very necessary resources for operating any chemical plant and contribute to total costs. Economic reasons notwithstanding, the processing industry has been incentivised to practise sustainable production ...
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(University of Pretoria, 2007-09-04)South Africa is one of the driest countries in the world and rivers and dams are the main source of water. The continuous pollution of the rivers and streams as well as the growing demand for water has led to stringent ...
Now showing items 1-15 of 15