The profitability of green retrofitting the building envelope of commercial buildings in Cape Town

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dc.contributor.advisorLe Jeune, Karenen_ZA
dc.contributor.authorBotha, Jacoen_ZA
dc.date.accessioned2018-02-09T07:09:17Z
dc.date.available2018-02-09T07:09:17Z
dc.date.issued2017en_ZA
dc.description.abstractA notion exists that the operational savings stemming from Deep Energy Retrofits are not sufficient to justify its capital outlay. This notion has focused property developers' attention on the construction of new green buildings, rather than optimizing existing building stock. Producing new buildings, while many existing properties are utilized on a sub-optimal level, with low rental income and high vacancies is not only resource inefficient, but also contributes to a much greater carbon footprint. The aim of this research is to establish whether retrofitting is a viable means of optimizing energy consumption in buildings based on investment return. The literature reveals that the façade is the most significant variable in energy optimisation in buildings and concluded that over-cladding strategies are generally the most efficient means to reduce heat transfer and control lighting levels. The research have been conducted by means of a two tiered methodology involving a case study approach, along with an experimental design, which was conducted through a simulation. A hypothetical building, representative of Cape Town's building stock was modeled and a number of façade over-clad strategies simulated to derive the most optimal solution. The simulation is conducted in DOE Energy Plus and COMFEN GUI. Capital cost data was collected and compared to energy cost savings in order to determine payback values. It was found that over-clad strategies may be economically feasible, which delivered payback periods of between 5 and 19 years, depending on the strategy. A partial retrofit, involving only the East and West facades was found to be the most feasible from an investment point of view, where woven mesh screens delivered the best results.en_ZA
dc.identifier.apacitationBotha, J. (2017). <i>The profitability of green retrofitting the building envelope of commercial buildings in Cape Town</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Construction Economics and Management. Retrieved from http://hdl.handle.net/11427/27428en_ZA
dc.identifier.chicagocitationBotha, Jaco. <i>"The profitability of green retrofitting the building envelope of commercial buildings in Cape Town."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Construction Economics and Management, 2017. http://hdl.handle.net/11427/27428en_ZA
dc.identifier.citationBotha, J. 2017. The profitability of green retrofitting the building envelope of commercial buildings in Cape Town. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Botha, Jaco AB - A notion exists that the operational savings stemming from Deep Energy Retrofits are not sufficient to justify its capital outlay. This notion has focused property developers' attention on the construction of new green buildings, rather than optimizing existing building stock. Producing new buildings, while many existing properties are utilized on a sub-optimal level, with low rental income and high vacancies is not only resource inefficient, but also contributes to a much greater carbon footprint. The aim of this research is to establish whether retrofitting is a viable means of optimizing energy consumption in buildings based on investment return. The literature reveals that the façade is the most significant variable in energy optimisation in buildings and concluded that over-cladding strategies are generally the most efficient means to reduce heat transfer and control lighting levels. The research have been conducted by means of a two tiered methodology involving a case study approach, along with an experimental design, which was conducted through a simulation. A hypothetical building, representative of Cape Town's building stock was modeled and a number of façade over-clad strategies simulated to derive the most optimal solution. The simulation is conducted in DOE Energy Plus and COMFEN GUI. Capital cost data was collected and compared to energy cost savings in order to determine payback values. It was found that over-clad strategies may be economically feasible, which delivered payback periods of between 5 and 19 years, depending on the strategy. A partial retrofit, involving only the East and West facades was found to be the most feasible from an investment point of view, where woven mesh screens delivered the best results. DA - 2017 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2017 T1 - The profitability of green retrofitting the building envelope of commercial buildings in Cape Town TI - The profitability of green retrofitting the building envelope of commercial buildings in Cape Town UR - http://hdl.handle.net/11427/27428 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/27428
dc.identifier.vancouvercitationBotha J. The profitability of green retrofitting the building envelope of commercial buildings in Cape Town. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Construction Economics and Management, 2017 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/27428en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Construction Economics and Managementen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherProperty Studiesen_ZA
dc.titleThe profitability of green retrofitting the building envelope of commercial buildings in Cape Townen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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