Fernandes, Luciana Oliveira (2015) Procedure for retrofit of the heat power performance of educational buildings by applying passive strategies conditioning. PhD thesis, Universidade Estadual de Campinas, Brazil.
Abstract
Retrofitting is an important strategy for existing buildings to meet the current standards of performance. It can also improve the environmental quality of buildings and increase their life cycle. The aim of this research is to develop an analysis procedure of the performance of retrofit strategies taking into account energy consumption and thermal comfort. Passive strategies can provide benefits to the thermal and energetic performance of buildings. Therefore their contribution to retrofit projects will be investigated. The hypothesis is that passive strategies can be advantageous in retrofit processes and that the application of a simplified procedure for comparative analysis that embrace thermal and energetic aspects of theses strategies can be practicable. The retrofit topic is more consolidated in European countries and in the U.S.A. than in Brazil. The increasing need for retrofit actions in educational buildings in Brazil is a consequence of an old building stock and the establishing of new standards. However, these standards focus on the energy consumption and there is no detailed evaluation of the thermal comfort for building users. For the development of this research a building was chosen to apply the proposed procedure. It is located at the campus of State University of Campinas, in Campinas/SP (Brazil). Data of total energy consumption and indoor temperature and humidity from rooms were monitored. The software EnergyPlus was used to estimate the performance of the building and its passive strategies: daylighting through dimmers and automated blinds, thermal chimney, natural daytime and nighttime ventilation. A systematic retrofit study was developed taking into account thermal and energetic aspects for choosing the strategies and exploring the benefits of passive techniques. For the studied case no improvements were obtained for the thermal comfort in summer due to the high levels of humidity. However, the daylighting and the daytime ventilation provided energy reductions of 16% for lighting and 14% for cooling, respectively. The aplicability of the proposed procedure that relies on a simplified visualization of the results in a single graph was demonstrated. This work also provided a methodology for the calibration of a building energy simulation model for a mixed-mode building. Further studies can be included to the scope of this procedure as: the evaluation costs of the retrofit strategies, payback and provided energy savings.
| Item Type: | Thesis (Doctoral) |
|---|---|
| Thesis advisor: | Labaki, Lucila Chebel |
| Uncontrolled Keywords: | energy efficiency; thermal comfort; buildings repairs and construction; buildings performance |
| Index terms: | estimate, humidity, building energy simulation, energy consumption, energy-saving, thermal comfort, environmental quality, summer, life cycle, energyplus, energy efficiency, repair, visualization, retrofit strategy, retrofitting, methodology, payback, building stock, Brazil, strategy, comparative analysis, ventilation, daylighting, energy reduction, educational building, indoor temperature |
| Subjects: | asset management, building performance, research methods, maintenance engineering, sustainability assessment, Geography, economic analysis, environmental science, construction type, climate science, environmental engineering, management, renovation and retrofit, design practice, sustainability and energy, financial and cost management, energy systems, data analysis and analytics, air quality, value management |
| Topics: | Design Practice, Construction Technology, Research Practice, Business Strategy, Cost Management, Sustainability, Geographical Context, Project Management, Engineering Principles |
| Descriptive scope: | 4 PCTA |
N.B. Descriptive scope is a count of how many of the five facets of empirical research are indicated by the words used in title, abstract and keywords. It is not intended as a judgement on the research; merely a count of the kind of word we would expect to indicate Phenomenon, Concepts, Theoretical framing, Empirical techniques, Analytical techniques. If all five are present, then a code of “5 PCTEA” will indicate this. If you feel the coding for this record is questionable, we welcome discussion around the terms we matched or the way we categorized them. The facet you would expect may not be coded, or a facet may be coded inappropriately. This can also bear on a larger question, of which facets should be treated as defining in construction management research. Please get in touch, and we will look at it. More details here