Thesis (M. Arch.)--University of Hong Kong, 1996. / Includes bibliographical references.

Thesis (M.Arch.)--University of Hong Kong, 1996. / Includes bibliographical references. Also available in print.

A field study of the feasibility and the performance of a sustainable drainage technique combined with a renewable energy device to provide heating in a domestic setting was carried out from March 2008 to November 2010 to acquire practical data about the system’s operation. Among all the sustainable drainage techniques, permeable pavement system (PPS) was selected to be applied in this project since this particular technique can be used for driveways and car-parking hard standings, but more specially they can be designed as a tanked system whereby an impermeable membrane is installed at the bottom of the tank in order to hold the rainwater collected as runoff from hard areas and roofs before releasing it in a controlled manner. The renewable energy device applied in this study is a ground source heat pump system (GSHP), which has been found in previous studies to provide a better performance when installed in wet conditions. Based on this, the PPS and the GSHP with horizontal ground heat exchanger (GHE) were integrated in a 350mm deep reservoir under ‘real life’ conditins. The combined system operated in heating mode in a family–sized, three bedrooms detached EcoHouse at the Building Research Establishment Innovation Park, Watford, UK. Monitoring the combined system included taking measurements of the temperature of the conditioned space, the ground around the PPS/GSHP system, and of the ambient air every 10 minutes. Assessing the performance of the PPS/GSHP system involved investigating the effect of extracting heat via the GHE on the ground temperature, the impact of the PPS/GSHP on the thermal profile of the air above the surface of the reservoir, and computing the PPS/GSHP coefficient of performance (CoP). The thesis includes information about the design of the PPS/GSHP system including the structure of the sub-base, types and size of the used aggregate and stone, the depth of the excavated reservoir amongst others, also the technical problems that materialized, largely due to the fact that the PPS/GSHP was installed and operating under real-life circumstances. Results obtained from the study provided evidence for the workability of the combined system in regards of stormwater management and of providing heat to the EcoHouse. However, monitoring the rainwater stored in the reservoir showed that, due to leakage, the top part of the buried coil was not covered with water. The monitoring also revealed that the rainwater surrounding parts of the coil was, in severe weather, frozen. Moreover, highly significant correlations (p<0.01) were calculated for the ambient air and the ground temperature relationships with the CoP. All of these factors resulted in a 1.8 coefficient of performance being obtained. This low figure was related to the shallow depth of the reservoir since it became clear that its ground temperature was greatly influenced by the ambient air temperature. The study also revealed that the evaporation process was prevented from occurring due to the Inbitex™ composite layer, as a result there was no significant effect on cooling the thermal profile of the air near the surface of the pavement. Furthermore, it was concluded that continuous heat extraction from the ground contributed to an underground temperature drop.

published_or_final_version / Environmental Management / Master / Master of Science in Environmental Management

Economic globalisation is enabling India to reinvent itself as a development crucible, providing previously unrealised opportunities for economic transformation. One crucial transformation of economic success is the rapidly growing middle class. Whilst the growth in the middle classes indicates improvement in the quality of life of many, the rate of consumption has also been increasing exponentially. If they, the middle classes consume resources at the same rate as the British and Americans, India will become the world’s number one producer of carbon emissions. The attitudes and aspirations of the growing middle classes are a major factor in the increased, and perhaps impulsive consumption patterns. It is therefore the aim of this research to consider the bottom-up approach, which validates this thesis by examining middle class homeowners’ preferences in Mysore, a south Indian city. Mysore used to be recognised as having socially cohesive and inclusive housing typologies that were climate responsive and calibrated to local, social and economic needs. Changes in social conditions, cultural practices and lifestyle can be seen in the way homeowners use their homes to demonstrate affluence and status. A key challenge is to research ways in which sustainable housing in an Indian context can both mitigate carbon emissions and at the same time address the material aspirations and desires of a fast-growing middle class. Baseline characteristics and homeowners’ attitudes are established by means of literature research and fieldwork. The output of this stage is triangulated with further research to narrow the focus towards boundary conditions and transition spaces for an in-depth study of relevant factors contributing towards consumption, aspiration and sustainability. The second stage points to the importance of the external boundary of the site and the edge of buildings in terms of aligning meaningful, sustainable design strategies with the concerns and aspirations of the emergent middle-class. This thesis argues that, in the domain of sustainable housing, both a qualitative approach and quantitative strategies are essential to the understanding of social and cultural dynamics as well as to measure and benchmark performance. Because of the nature of this multi-threaded approach, mixed method research practices have been followed using triangulation methodologies and grounded theory. This has resulted in the revisiting and refining of the research focus and objectives throughout the research. During the research process, spatial scenarios for housing were developed to harmonise preferences and different sustainability agendas. The research focused on identifying and testing the critical building characteristics of the boundary location. Homeowners’ preferences were qualified by a multi-sorting task analysis and study model performance tested by sophisticated environmental simulation. This was triangulated with fieldwork studies to help propose sustainable housing strategies. The methodology adopted has been critical to supporting the architectural response to the cultural and economic condition on one hand (social methods) and the climate responsive, traditional design and simulation models (environmental design methods) on the other. Different sets of fieldwork were conducted at two stages that involved archival searches and detailed interaction with architects, builders, users, academics and government agencies. In total, 240 respondents answered a questionnaire survey and 146 semi-structured interviews were conducted. The outcome of this research demonstrates how, in the absence of any counterbalancing regulations, social perception and economic aspirations limit the acceptability of sustainable design and construction strategies. In India, middle class demographics and value systems are complex; where safety and security, and display of wealth have to go hand in hand. In this context, this research provides new insight into the way sustainability can be understood in the Indian context with qualitative values that are complemented by quantitative measurements. Finally, this research suggests ways of introducing sustainable practices through a negotiated understanding that balances aspirations with more responsive design. India has identified housing as one of the eight national missions to reduce carbon emissions as part of its commitment to reduce people’s vulnerability to the impact of climate change. In a geo-climatically, regionally and culturally diverse country like India, the top-down national policy can only be successfully implemented with an understanding of the local context. A bottom-up approach to identify sustainable strategies that acknowledge homeowners needs and aspirations should be a useful contribution to achieving carbon reduction and sustainable housing in Mysore. With minor adjustments, the methodology and research process could be adopted in other Indian cities.

As demand for energy is skyrocketing around the globe, environmental challenges are becoming more severe than ever before. Carbon dioxide, methane gas and other greenhouse gases are rapidly contributing to global warming and ozone depletion phenomenon. Buildings are among major contributors of greenhouse gases. They are consuming more than 40% of total energy and three quarter of the total electricity in the United States. It is to some distance the responsibility of building design professionals to address the impacts of their practice on the environment by reducing the energy consumption and carbon emission of their projects. This thesis aims to create a practical design guideline to help architects design energy-neutral homes in North America. The study's primary emphasis is on reducing building energy demand by implementing core principles of building physics into the design process throughout a case study project. What makes this process unique compared to other existing green design programs is its focus on architect's knowledge to implement core energy saving design strategies into design and evaluate their performance with a normative simulation tool. Selection and analysis of building systems, financial evaluation of cost effective systems and materials, uncertainty analysis of building systems, construction cost estimating and marketing analysis of the case study project, demonstrate simple strategies for designers to use in projects with higher sensitivity. In conclusion, the idea behind this methodology is building marketable energy-neutral homes in the current market with existing materials and none-complex technologies. The success of this design method is depends on the knowledge and skills of architects in building science, architectural design, and building construction. Despite barriers and many uncertainties embedded in this process, moving toward energy-neutral homes will have positive impacts on environment even if it could not reach the Net-Zero balance.

Tez (Yüksek Lisans) - Süleyman Demirel Üniversitesi, Fen Bilimleri Enstitüsü, Mimarlık Anabilim Dalı, 2009. / Kaynakça var.

M. Tech. Architectural Technology / This research project focuses on determining the costs involved in applying energy efficient green technologies and sustainable principles to Johannesburg's existing commercial building stock. Although South Africa is committed to contributing toward greenhouse gas reduction in terms of the Kyoto Protocol, such contribution unfortunately occurs at a slow pace. Although the current built environment is identified as a key element in the mitigation of climate change, developers and building owners argue that the associated costs remain the largest drawback. Retrofitting existing buildings to meet green standards could significantly contribute to mitigating climate change.

The intension of this dissertation was to investigate why architectural environments were not healing, but harming people, and what factors could be looked at in order to provide healing environments for mankind. The human living and working environments are contributing more to illness and the aesthetic, than to creating environments that comfort, engage and heal the human beings. Buildings needed to become more attuned to people’s physical and mental well-being and by providing an architecture that incorporates water and finds ways to heal while being functional. Nature’s principles incorporate networks of complexity while remaining harmonious and by looking towards, and using nature in architecture is where inspiration can be found for a solution. The aim of this dissertation was to create an appropriate architecture that respects nature, while providing the essential resourceful, sensitive, delightful and therapeutic environments for the betterment of those who suffer from illnesses. The challenge was that creating balance between architecture and nature is difficult but necessary for producing healing environments for human well-being. A research investigation was carried out in the form of a literature review that covered nature, water and architecture and the factors and elements that these categories contribute to healing. Precedents and case studies where investigated and analyzed to prove these theories of healing of a successful collaboration between nature and architecture. Questionnaires and interviews were conducted with medical professionals to establish the relevance of water in healing for humans through hydrotherapy. The research concluded that healing environments were possible and greatly enhanced when nature, water and architecture were combined. What can be contributed on a large scale is that healing environments is achievable and should be implanted in every society and city for the overall well-being of mankind, and specifically, can contribute medically to healing certain diseases and conditions. / Thesis (M.Arch.)-University of KwaZulu-Natal, Durban, 2011.

The purpose of this thesis is to show how the image of contemporary green buildings is being used to promote and uphold the idea of sustainability. The thesis focuses on two fundamental aspects: the role of the image in sustainability and the consumption of that image by the broader community. / I discuss how consumer culture constantly raises the standards of what constitutes a normal lifestyle in modern society and is used as a measure of social, cultural and economic status. These rising expectations affect material consumption which negatively impacts on the environment, societies and cultures. Consumption, therefore does not only involve the consumption of goods and services but also the symbolic value to them, and this is of great importance in any discussion of sustainability in architecture and design. / Thesis (MArchitecture)--University of South Australia, 2006