Teixeira, Carla Fernanda Barbosa (2013) Analysis thermal performance of fiber cement tiles treated with white coatings and submitted to water spraying. PhD thesis, Universidade Estadual de Campinas, Brazil.
Abstract
The search for materials, technologies and ways that can get constructions more energy efficient has been a concern of researches, educators and designers not only in Brazil, but also in the world. The use of light colors on roofing has been studied a lot; like cooling strategy for hot climates. The aim of this work is to analyze thermal performance of white coatings on roofing and to estimate energy savings in a room with white coating on roofing. Evaporative cooling, added to reflective cooling, was used through rain-water spraying on coating surfaces. Some testing on coatings as thermal emissivity, solar reflectance and absorption of sprayed water were requested for characterization of coatings thermal performance. In consequence of that literature review related to these themes was necessary to investigate methodologies applied in researches which have been done in the world. Commercial and ordinary paintings (of different chemical compositions, but with same color: white) were applied on fiber cement tiles in association to water spraying in weather conditions. Inside-surface temperatures and meteorological data were collected and analyzed together with solar reflectance, thermal emissivity and water absorption by tile coatings. Results of reflective technique proved expectations and illustrated that some attention is requested to choose the kind of white painting. However, when these coatings received water spraying on surfaces, they got the best results. The white coatings influences were considered through an annual thermal simulation energy saving. This work has the purpose to contribute with existing additional information in relation to white painting available, in order to get less roofing temperatures as well as to show that the rain water usage could be a tool for decreasing drained water on streets in rainy season
| Item Type: | Thesis (Doctoral) |
|---|---|
| Uncontrolled Keywords: | energy efficiency; reflectance; thermal confort |
| Index terms: | surface temperature, designer, meteorological data, energy efficiency, spraying, estimate, testing, evaporative cooling, energy-saving, hot climate, rain, coating, water absorption, strategy, literature review, Brazil, weather, thermal performance, roofing, methodology |
| Subjects: | profession, data collection methods, air quality, sustainability and energy, building materials, energy systems, data analysis and analytics, financial and cost management, management, design practice, water management, thermal systems, climate science, professional practice, research methods, Geography, building construction |
| Topics: | Engineering Principles, Geographical Context, Sustainability, Design Practice, Construction Materials, Research Practice, Business Strategy, Cost Management, Roles and Professions |
| Descriptive scope: | 5 PCTEA |
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