Low energy storage off-grid photovoltaic systems
- Authors: Ribisi, Edwin Tebogo
- Date: 2022-12
- Subjects: Solar panels , Photovoltaic power systems
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60489 , vital:65634
- Description: Electricity is one of humanity's most important resources for enhancing the quality of life. With over 770 million people worldwide still without access to electricity, this is a big global challenge that requires a variety of solutions if we humans are to achieve the 2030 sustainable development objectives, such as zero poverty and universal access to electricity. A major number of the 770 million people who lack access to electricity reside in regions with abundant sun irradiation. Electrification is a practical key to unlocking socio-economic development in impoverished regions. PV systems with batteries have a disadvantage of requiring high capital costs, with batteries being the most expensive component in such a system. Accumulation of maintenance and replacement costs of batteries are high throughout the lifespan of a PV system with batteries due to limited lifespan of batteries, typical 1-3 years. A batteryless PV system for daytime commercial purposes is proposed in the dissertation. An experimental set up of the proposed batteryless PV system was constructed and tested in a laboratory. A load controller for the batteryless PV system was implemented, loads were given priority levels and schedule times to be operated during the day. A DC dump load regulates DC bus voltage and also acts as a water heater. Furthermore, a simulation model was developed on MATLAB Simulink. The simulation model consisted of two case study scenarios, 3 solar panel system and 7 solar panel system of an internet café business. Better system performance was noticed when loads were given priority levels with no schedule times. This dissertation establishes the foundation for a completely batteryless solar system designed to cultivate daytime economic activities in impoverished communities to increase revenue opportunities. , Thesis (MA) -- Faculty of Engineering, the Built Environment and Technology, 2022
- Full Text:
- Date Issued: 2022-12
- Authors: Ribisi, Edwin Tebogo
- Date: 2022-12
- Subjects: Solar panels , Photovoltaic power systems
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/60489 , vital:65634
- Description: Electricity is one of humanity's most important resources for enhancing the quality of life. With over 770 million people worldwide still without access to electricity, this is a big global challenge that requires a variety of solutions if we humans are to achieve the 2030 sustainable development objectives, such as zero poverty and universal access to electricity. A major number of the 770 million people who lack access to electricity reside in regions with abundant sun irradiation. Electrification is a practical key to unlocking socio-economic development in impoverished regions. PV systems with batteries have a disadvantage of requiring high capital costs, with batteries being the most expensive component in such a system. Accumulation of maintenance and replacement costs of batteries are high throughout the lifespan of a PV system with batteries due to limited lifespan of batteries, typical 1-3 years. A batteryless PV system for daytime commercial purposes is proposed in the dissertation. An experimental set up of the proposed batteryless PV system was constructed and tested in a laboratory. A load controller for the batteryless PV system was implemented, loads were given priority levels and schedule times to be operated during the day. A DC dump load regulates DC bus voltage and also acts as a water heater. Furthermore, a simulation model was developed on MATLAB Simulink. The simulation model consisted of two case study scenarios, 3 solar panel system and 7 solar panel system of an internet café business. Better system performance was noticed when loads were given priority levels with no schedule times. This dissertation establishes the foundation for a completely batteryless solar system designed to cultivate daytime economic activities in impoverished communities to increase revenue opportunities. , Thesis (MA) -- Faculty of Engineering, the Built Environment and Technology, 2022
- Full Text:
- Date Issued: 2022-12
The design of a regional Archives in Swellendam, South Africa
- Authors: Steyn, Anli
- Date: 2021-12
- Subjects: Archival materials -- Conservation and restoration -- Construction , Community centers -- South Africa -- Swellendam -- Designs and plans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58595 , vital:59944
- Description: The treatise and proposed project deal with the creation of spaces rooted in the culture of a place, its identity, memory and meaning in the form of a contemporary regional archive and museum space for the context of Swellendam’s historical ribbon. The treatise seeks to find a strategy for a contemporary, yet regional specific, intervention in a traditional context and attempts to fulfil the creation of a place of culture, identity, meaning and memory. The methodology used for this architectural treatise is qualitative. In order to establish an appropriate building type, Swellendam's history and contextual data were analysed, at the same time, selected literature and ideas were introduced to establish the project's value set. Methods and principles are extracted and reinterpreted by the design project. Among the various works of literatures/theories reviewed in this treatise is that of Jonathan Noble, Maurice Halbwach, and Kenneth Frampton, among others. This respective literature sets the basis of the project’s value set on place and identity, memory and meaning, and tectonics and materials. The town’s rich history, morphology and nature of physical context are selected as an appropriate site. Furthermore, the treatise explores museums and archives as building types. This is done through the comparison of precedents under the light of certain issues. From this, the building type’s activities and spatial, programmatical requirements are gathered. Amid this various information collected are a set of relevant principles. Therefore, a set of principles (approach to memory, meaning and identity; heritage and conservation; extracting from the existing/vernacular/context; and approach to light) is explored and precedents are used to represent and learn from principles. This design project goes through a series of iterations to fulfil the specific architectural concerns and to create architecture specific for the context (relation to place, culture, history and site). The final design attempts to be a sensitive intervention, neutral in form, that resembles a heterogenous culture and hybridity. It aims to represent the culture of its place while being a public museum and archive facility. , Thesis (MArch) (Professional) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
- Authors: Steyn, Anli
- Date: 2021-12
- Subjects: Archival materials -- Conservation and restoration -- Construction , Community centers -- South Africa -- Swellendam -- Designs and plans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10948/58595 , vital:59944
- Description: The treatise and proposed project deal with the creation of spaces rooted in the culture of a place, its identity, memory and meaning in the form of a contemporary regional archive and museum space for the context of Swellendam’s historical ribbon. The treatise seeks to find a strategy for a contemporary, yet regional specific, intervention in a traditional context and attempts to fulfil the creation of a place of culture, identity, meaning and memory. The methodology used for this architectural treatise is qualitative. In order to establish an appropriate building type, Swellendam's history and contextual data were analysed, at the same time, selected literature and ideas were introduced to establish the project's value set. Methods and principles are extracted and reinterpreted by the design project. Among the various works of literatures/theories reviewed in this treatise is that of Jonathan Noble, Maurice Halbwach, and Kenneth Frampton, among others. This respective literature sets the basis of the project’s value set on place and identity, memory and meaning, and tectonics and materials. The town’s rich history, morphology and nature of physical context are selected as an appropriate site. Furthermore, the treatise explores museums and archives as building types. This is done through the comparison of precedents under the light of certain issues. From this, the building type’s activities and spatial, programmatical requirements are gathered. Amid this various information collected are a set of relevant principles. Therefore, a set of principles (approach to memory, meaning and identity; heritage and conservation; extracting from the existing/vernacular/context; and approach to light) is explored and precedents are used to represent and learn from principles. This design project goes through a series of iterations to fulfil the specific architectural concerns and to create architecture specific for the context (relation to place, culture, history and site). The final design attempts to be a sensitive intervention, neutral in form, that resembles a heterogenous culture and hybridity. It aims to represent the culture of its place while being a public museum and archive facility. , Thesis (MArch) (Professional) -- Faculty of Engineering, the Built Environment and Technology, School of Architecture, 2021
- Full Text:
- Date Issued: 2021-12
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