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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Rooftop Solar Power Production Potential of Existing Public Housing Buildings in Singapore

Liew, Jamie January 2021 (has links)
The importance of increasing renewable energy production to facilitate a sustainable energy transition has been well-discussed and reinforced worldwide. In land- and resource-scarce and tropical Singapore, solar has been deemed the most feasible renewable energy technology for the country moving forward. Previous studies have focused on assessing the feasibility of various solar technologies. This paper instead analyses the rooftop solar power production potential of existing high-rise residential buildings in Singapore, and thus contributes to reaching the national solar goal using geographic information system geospatial imagery.  For this study, the chosen focus area is the south of Jurong East in Singapore. Results show that solar deployment on all available public high-rise residential building rooftop areas in the focus area will be able to generate a total potential solar peak power and annual solar energy output of 2-megawatt peak and 2.8-gigawatt hour per year respectively. This equates to meeting the energy demand of 679 public residential apartments in the focus area and meeting 0.18% of the national solar goal of reaching 1.5- gigawatt peak by 2025. In an urban context, the use of geospatial analysis has been presented to benefit urban planning especially with regards to the integration of rooftop solar photovoltaic systems.
2

Aquecimento solar de água e medição individualizada: sistemas para edifícios multifamiliares. / Solar water heating system and individualization: systems for multifamily buildings.

Pimenta, Cristina Cardoso 20 February 2019 (has links)
A matriz energética mundial atual gera inúmeros impactos ambientais e, com isso, fontes de energia alternativas são necessárias para um futuro imediato. Desta forma, a energia solar se apresenta como uma das possíveis alternativas. A energia solar, principalmente quando utilizada para o aquecimento de água, ou seja, na sua forma térmica, não apresenta impactos ambientais durante sua produção e possui um funcionamento simples. Devido aos seus benefícios, sistemas de aquecimento solar de água já são muito utilizados em diversos países e, inclusive, incentivados por leis, como na cidade de São Paulo. Mesmo este sistema já tendo sido muito estudado, quando a sua aplicação é destinada a residências unifamiliares, ainda há algumas lacunas quando se trata da aplicação em residências multifamiliares. Um exemplo de lacuna é a questão da medição individualizada dos sistemas prediais, incluindo da energia solar. Sendo assim, o objetivo da presente pesquisa é encontrar um sistema de aquecimento solar mais apropriado quanto à medição individualizada. Para tanto, são analisados, teoricamente, diferentes sistemas e suas caraterísticas. Além disso, é realizado um estudo de caso para se avaliar as características de um sistema em funcionamento em um edifício localizado na cidade de São Paulo. Utilizando-se da junção dos conhecimentos adquiridos na seção teórica e na seção prática, são simuladas algumas propostas de alternativas do sistema, visando avaliar o comportamento da produção dos mesmos em situações distintas. Ao final é possível identificar que o sistema Solar coletivo com acumulação privado e auxiliar instantâneo privado foi o que atendeu a um maior número dos requisitos gerais de sistemas de aquecimento solar e dos requisitos de individualização, e não apresentou problemas de perdas térmicas significativas, apesar de inovações, vislumbradas para um futuro próximo, terem potencial para elevar ainda mais a qualidade do sistema. / The current global energy matrix generates many environments impacts and, thereby, alternative energy sources are required by an immediate future. Indeed, solar energy is presented as one of the possible alternatives. Solar energy, as more when it heats water, or in other words, when its thermal form is used on the system, does not generate environment impacts during its use and has a simple operation. Due its benefits, solar water heating systems are already widely used in many countries and even encouraged by laws, for example in São Paulo city. Even though this system has already been studied by many scientific researches regarding its application for single family dwellings, there are some gaps when it is related to multifamily dwellings. One example of it is the individualization of the building systems aspect, including the individualization of the solar energy use. Therefore, the aim of this research is find a solar water heating system more appropriated regarding the individualization aspect. Thereunto, different systems from various places are theoretically analyzed by their characteristics. Furthermore, a study case is held to evaluate characteristics of a working system in a residential building located in São Paulo city. Using the junction of both, theoretical and practical studies, some alternative proposals are simulated to evaluate how the production of the systems are in different situations. As a conclusion, it is possible to define the system with a shared solar energy, private boiler and instantaneous auxiliary energy heating as the system that meet a larger number of the general solar heating system requirements and of the individualization requirements and do not have significative thermal loss issues, although, prospected near future innovations have potential to further improve the system.

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