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Dr. Ana Briga-Sá
Engineering Department, School of Science and Technology, University of Trás-os-Montes and Alto Douro, 5001 Vila Real, Portugal

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Research Keywords & Expertise

0 Green Roofs
0 Sustainable Construction
0 Energy Efficiency in Buildings
0 thermal behavior
0 Recovery and reuse of waste in construction

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Energy Efficiency in Buildings
Trombe walls
thermal behavior

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Short Biography

Ana Briga Sá is an Assistant Professor at the Engineering Department of the University of Trás‐os‐Montes e Alto Douro (UTAD), where she teaches since 2003. Concluded the integrated Master in Civil Engineering in 2004 and, in 2007, the MSc in Engineering and Municipal Planning, both at the University of Trás‐os‐Montes e Alto Douro (UTAD). In 2011, concluded her PhD in Civil Engineering, at the University of Beira Interior (UBI), with the thesis “Trombe Wall: Experimental Analysis and Thermal Performance Simulation”. Member of the Chemistry Research Centre (CQ‐VR) of UTAD, her research focus is: Buildings energy efficiency and sustainable construction; Thermal comfort and building physics; Thermal performance analysis of passive solar systems; Experimental analysis, simulation, modelling, automation and control of Trombe walls thermal performance; Thermal performance assessment of green roofs and facades; Experimental analysis on the thermal performance and indoor hygrometric conditions for different construction solutions and materials; Study of the potential incorporation of different type of waste (e.g. textile waste, agricultural waste, insulation materials foam residues) in building elements, such as blocks, boards and coating materials; Evaluation of physical and mechanical characteristics, with emphasis on the possibility to achieve materials/solutions with high thermal performance; Water-Energy nexus at water urban cycle.

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Journal article
Published: 26 August 2021 in Energy and Buildings
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Building sector is responsible for the majority of energy consumption in the world, becoming priority target in energy efficiency policies. The integration of bioclimatic solutions combined with energy use prediction models will allow to achieve more energy efficient and sustainable buildings. Trombe wall is a passive solar system that uses a renewable energy source to improve buildings energy efficiency by reducing heating demand. Although prediction models of energy use in buildings have received a remarkable attention from the scientific community as an approach to reduce energy consumption and environmental impacts, no similar applications were identified for the particular case of Trombe walls. In this work, Trombe wall thermal performance was predicted for different data set combinations, considering indoor temperature (Ti) and heat flux (HF) as output variables. Data mining process was performed applying artificial neural networks (ANN), support vector machines (SVM) and multiple linear regressions (MLR) algorithms. The results revealed high accuracy by the three models for Ti and HF forecasting. The capacity of ANN and SVM models to predict Ti and HF is very similar while MLR model presents more adequacy in the case of Ti forecasting. It was also concluded that a high number of input variables will improve the model’s prediction capacity. However, more input variables are required for HF than to Ti prediction. Furthermore, the inclusion of air layer temperature (Tca) or the massive wall outer surface temperature (Tsupe) as input variables strongly improves the capacity of Ti predictors, especially ANN and SVM models, while the massive wall inner surface temperature (Tsupi) will lead to a better accuracy of MLR model for HF forecasting. The interconnections established between the input and output variables for different data set combinations will contribute to optimize the Trombe wall thermal performance and to define the algorithms that will support the operating modes of an automation and control system.

ACS Style

Ana Briga-Sá; Dinis Leitão; José Boaventura-Cunha; Francisco F. Martins. Trombe Wall Thermal Performance: Data Mining Techniques for Indoor Temperatures and Heat Flux Forecasting. Energy and Buildings 2021, 111407 .

AMA Style

Ana Briga-Sá, Dinis Leitão, José Boaventura-Cunha, Francisco F. Martins. Trombe Wall Thermal Performance: Data Mining Techniques for Indoor Temperatures and Heat Flux Forecasting. Energy and Buildings. 2021; ():111407.

Chicago/Turabian Style

Ana Briga-Sá; Dinis Leitão; José Boaventura-Cunha; Francisco F. Martins. 2021. "Trombe Wall Thermal Performance: Data Mining Techniques for Indoor Temperatures and Heat Flux Forecasting." Energy and Buildings , no. : 111407.

Journal article
Published: 17 August 2021 in Energies
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The Trombe wall is a passive solar system that can improve buildings energy efficiency. Despite the studies already developed in this field, more research is needed to assess the possibility of its integration in buildings avoiding user intervention. In this study, the influence of air vent management and materials’ heat storage capacity upon its thermal performance, particularly in the temperature fluctuation and indoor conditions, was discussed. Comparing two days with similar solar radiation (SR) for non-ventilated (NVTW) and ventilated (VTW) Trombe walls, a differential of 43 °C between the external surface temperature and the one in the middle of the massive wall was verified for NVTW, while for VTW this value was 27 °C, reflecting the heat transfer by air convection, which reduced greenhouse effect, solar absorption and heat storage. A cooling capacity greater than 50% was verified for VTW compared to NVTW during night periods. An algorithm for the Trombe wall’s automation and control was proposed considering SR as variable. Air vents and external shading devices should be open when SR exceeds 100 W/m2 and closed for 50 W/m2 to obtain at least 20 °C inside the room. Closing for 50 W/m2 and opening for values lower that 20 W/m2 is suggested for summer periods.

ACS Style

Ana Briga-Sá; Anabela Paiva; João-Carlos Lanzinha; José Boaventura-Cunha; Luís Fernandes. Influence of Air Vents Management on Trombe Wall Temperature Fluctuations: An Experimental Analysis under Real Climate Conditions. Energies 2021, 14, 5043 .

AMA Style

Ana Briga-Sá, Anabela Paiva, João-Carlos Lanzinha, José Boaventura-Cunha, Luís Fernandes. Influence of Air Vents Management on Trombe Wall Temperature Fluctuations: An Experimental Analysis under Real Climate Conditions. Energies. 2021; 14 (16):5043.

Chicago/Turabian Style

Ana Briga-Sá; Anabela Paiva; João-Carlos Lanzinha; José Boaventura-Cunha; Luís Fernandes. 2021. "Influence of Air Vents Management on Trombe Wall Temperature Fluctuations: An Experimental Analysis under Real Climate Conditions." Energies 14, no. 16: 5043.

Conference paper
Published: 14 July 2021 in RILEM Bookseries
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It is intended with the research work here presented to contribute to the scientific knowledge regarding the incorporation of C&D and polyurethane foam wastes in compressed blocks. Two mixtures were defined considering the percentages of 2.5 and 5% of polyurethane foam waste. Fly ash was used as a precursor and the two mixtures were activated with a solution based on sodium hydroxide and sodium silicate. Experimental work was carried out to assess the blocks thermal performance. Experimental measurements allowed determining indoor and outdoor temperatures, heat flux and inner surface temperatures. The data acquired allowed to estimate the values of the thermal transmission coefficient. It was concluded that an increase in the percentage of polyurethane foam waste in the composition leads to an improvement of the thermal behaviour. Values of 2.93 and 2.57 W/m2 °C were estimated for the percentages of 2.5 and 5%, respectively, presenting higher values of thermal resistance when compared with a common solution of ceramic solid block with the same dimensions.

ACS Style

A. Briga-Sá; V. Neiva; D. Leitão; T. Miranda; N. Cristelo. Thermal Performance of Compressed Blocks Made from Construction and Polyurethane Foam Waste. RILEM Bookseries 2021, 225 -236.

AMA Style

A. Briga-Sá, V. Neiva, D. Leitão, T. Miranda, N. Cristelo. Thermal Performance of Compressed Blocks Made from Construction and Polyurethane Foam Waste. RILEM Bookseries. 2021; ():225-236.

Chicago/Turabian Style

A. Briga-Sá; V. Neiva; D. Leitão; T. Miranda; N. Cristelo. 2021. "Thermal Performance of Compressed Blocks Made from Construction and Polyurethane Foam Waste." RILEM Bookseries , no. : 225-236.

Journal article
Published: 09 January 2019 in Urban Science
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The characterization of water and energy consumptions is essential in order to define strategies for their rational use. The way these resources are used in households is the path for efficient and rational management, interdependent from each other. It is believed that there are significant differences between the patterns of water and energy consumption in rural and urban areas, where influencing factors should also be identified. This article aims to provide some preliminary results of a research project named ENERWAT, with the main goal to characterize the relation between water and energy consumption at the end use level for urban and rural environments. One of the goals of the aforementioned project was the design, application, and results analysis of a survey, in order to find the main differences in the water and energy consumptions at the end use level and the factors that influence it in urban and rural households. A total of 245 households participated in the research during 2016 (110 urban dwellings and 135 rural), responding to questions on their family composition, dwellings characterization, water and energy consumption habits, and conservation behaviors of these resources. The project also includes the instrumentation and monitoring of dwellings in rural and urban environments to quantify the water consumption and related energy consumption. This stage is still in progress and includes in situ measurements of nine different households (four in rural and five in urban environments) during at least one year. In this article, some of the results obtained by the survey application and the in situ measurements are presented. Despite the large number of data and the associated complexity, it can be concluded that the joint analysis of the results allows identification of a connection between water and energy consumption, as well as a household’s consumption patterns.

ACS Style

Cristina Matos; Sandra Pereira Da Silva Cunha; Francisco Pereira; Arminda Gonçalves; Elisabete Silva; Sandra Pereira; Isabel Bentes; Diana Faria; Ana Briga-Sá. Characterization of Water and Energy Consumptions at the End Use Level in Rural and Urban Environments: Preliminary Results of the ENERWAT Project. Urban Science 2019, 3, 8 .

AMA Style

Cristina Matos, Sandra Pereira Da Silva Cunha, Francisco Pereira, Arminda Gonçalves, Elisabete Silva, Sandra Pereira, Isabel Bentes, Diana Faria, Ana Briga-Sá. Characterization of Water and Energy Consumptions at the End Use Level in Rural and Urban Environments: Preliminary Results of the ENERWAT Project. Urban Science. 2019; 3 (1):8.

Chicago/Turabian Style

Cristina Matos; Sandra Pereira Da Silva Cunha; Francisco Pereira; Arminda Gonçalves; Elisabete Silva; Sandra Pereira; Isabel Bentes; Diana Faria; Ana Briga-Sá. 2019. "Characterization of Water and Energy Consumptions at the End Use Level in Rural and Urban Environments: Preliminary Results of the ENERWAT Project." Urban Science 3, no. 1: 8.

Journal article
Published: 01 November 2018 in Science of The Total Environment
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Rural and urban environments present significant differences between water and energy consumptions. It is important to know, in detail, which factors related to the consumption of these two resources are different in both environments, once that will be those important to manage and discuss in order to improve its use efficiency and sustainability. This research work involves a survey whose aim is to find the factors that in rural and urban environments may justify the differences found in water and energy consumptions. Besides the collection of water and energy consumption data, this survey analyzed 80 variables (socio-demographic, economic, household characterization, among others), that were chosen among the bibliography as possible factors that should influence water and energy consumptions. After the survey application in rural and urban areas and the data statistical treatment, 42 variables remained as truly differentiating factors of rural and urban environments and so as possible determinants of water and energy consumptions. In order to achieve these objectives, a descriptive data analysis and statistical inference (Mann-Whitney-Wilcoxon test and the Chi-square test of homogeneity) were performed. All the 42 differentiating variables that result from this study may be able to justify these differences, however this will not be presented in the paper and it is reserved for future work.

ACS Style

C. Matos; I. Bentes; S. Pereira; A.M. Gonçalves; D. Faria; A. Briga-Sá. Which are the factors that may explain the differences in water and energy consumptions in urban and rural environments? Science of The Total Environment 2018, 642, 421 -435.

AMA Style

C. Matos, I. Bentes, S. Pereira, A.M. Gonçalves, D. Faria, A. Briga-Sá. Which are the factors that may explain the differences in water and energy consumptions in urban and rural environments? Science of The Total Environment. 2018; 642 ():421-435.

Chicago/Turabian Style

C. Matos; I. Bentes; S. Pereira; A.M. Gonçalves; D. Faria; A. Briga-Sá. 2018. "Which are the factors that may explain the differences in water and energy consumptions in urban and rural environments?" Science of The Total Environment 642, no. : 421-435.

Journal article
Published: 21 July 2018 in Science of The Total Environment
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In the domestic segment, various appliances and processes consume great amount of water and, consequently, energy. In this context, the main aim of this study is to analyse the impact of water temperature, flow and bath duration in water and energy consumptions. The impact on CO2 emissions and a simple costs analysis were also carried out. It included a monitoring plan of 197 baths taken under different scenarios of water temperature and flow. It was concluded that increasing water consumption leads to an increase on energy consumption and that both resources consumptions increase with bath duration. Bath temperature had influence not only on energy consumption, as expected, but also in water consumption, what may be explained by the user's satisfaction during baths with higher temperatures. The use of a flow reducing valve is not a guarantee of water saving which can also be related to the user's satisfaction patterns, given that the introduction of a flow reducing valve can lead to a bath duration increase. In what concerns to the CO2 emissions, it was concluded, as expected, that higher values are obtained for baths with higher temperatures given their relation with higher energy consumptions patterns. A simple costs analysis revealed that having flow reducing valves, with a bath temperature of 75 °C, increased the costs with electricity and water in 119% and 32%, respectively, when compared with a temperature of 60 °C.

ACS Style

C. Matos; I. Bentes; S. Pereira; D. Faria; A. Briga-Sá. Energy consumption, CO2 emissions and costs related to baths water consumption depending on the temperature and the use of flow reducing valves. Science of The Total Environment 2018, 646, 280 -289.

AMA Style

C. Matos, I. Bentes, S. Pereira, D. Faria, A. Briga-Sá. Energy consumption, CO2 emissions and costs related to baths water consumption depending on the temperature and the use of flow reducing valves. Science of The Total Environment. 2018; 646 ():280-289.

Chicago/Turabian Style

C. Matos; I. Bentes; S. Pereira; D. Faria; A. Briga-Sá. 2018. "Energy consumption, CO2 emissions and costs related to baths water consumption depending on the temperature and the use of flow reducing valves." Science of The Total Environment 646, no. : 280-289.

Journal article
Published: 01 September 2017 in Energy and Buildings
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ACS Style

Ana Briga-Sá; José Boaventura-Cunha; João Lanzinha; Anabela Paiva. Experimental and analytical approach on the Trombe wall thermal performance parameters characterization. Energy and Buildings 2017, 150, 262 -280.

AMA Style

Ana Briga-Sá, José Boaventura-Cunha, João Lanzinha, Anabela Paiva. Experimental and analytical approach on the Trombe wall thermal performance parameters characterization. Energy and Buildings. 2017; 150 ():262-280.

Chicago/Turabian Style

Ana Briga-Sá; José Boaventura-Cunha; João Lanzinha; Anabela Paiva. 2017. "Experimental and analytical approach on the Trombe wall thermal performance parameters characterization." Energy and Buildings 150, no. : 262-280.

Journal article
Published: 01 May 2017 in Science of The Total Environment
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Nowadays, water and energy consumption is intensifying every year in most of the countries. This perpetual increase will not be supportable in the long run, making urgently to manage these resources on a sustainable way. Domestic consumptions of water and electric energy usually are related and it's important to study that relation, identifying opportunities for use efficient improvement. In fact, without an understanding of water-energy relations, there are water efficiency measures that may lead to unintentional costs in the energy efficiency field. In order to take full advantage of combined effect between water and energy water management methodologies, it is necessary to collect data to ensure that the efforts are directed through the most effective paths. This paper presents a study based in the characterization, measurement and analysis of water and electricity consumption in a single family house (2months period) in order to find an interdependent relationship between consumptions at the end user level. The study was carried out on about 200 baths, divided in four different scenarios where the influence of two variables was tested: the flow reducer valve and the bath temperature. Data showed that the presence of flow reducer valve decreased electric energy consumption and water consumption, but increased the bath duration. Setting a lower temperature in water-heater, decreased electric consumption, water consumption and bath duration. Analysing the influence of the flow reducer valve and 60°C temperature simultaneously, it was concluded that it had a significant influence on electric energy consumption and on the baths duration but had no influence on water consumption.

ACS Style

Cristina Matos; A. Briga-Sá; I. Bentes; D. Faria; S. Pereira. In situ evaluation of water and energy consumptions at the end use level: The influence of flow reducers and temperature in baths. Science of The Total Environment 2017, 586, 536 -541.

AMA Style

Cristina Matos, A. Briga-Sá, I. Bentes, D. Faria, S. Pereira. In situ evaluation of water and energy consumptions at the end use level: The influence of flow reducers and temperature in baths. Science of The Total Environment. 2017; 586 ():536-541.

Chicago/Turabian Style

Cristina Matos; A. Briga-Sá; I. Bentes; D. Faria; S. Pereira. 2017. "In situ evaluation of water and energy consumptions at the end use level: The influence of flow reducers and temperature in baths." Science of The Total Environment 586, no. : 536-541.

Research article
Published: 14 March 2017 in Journal of Building Physics
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The influence of the massive wall material, thickness and ventilation system on the Trombe wall thermal performance was analysed based on an analytical methodology. Results obtained from experimental work will also be added to this study. During the heating season, for the non-ventilated Trombe wall, the global heat gains decrease is not proportional to the thickness increase, and this ratio depends on the massive wall material heat storage capacity. A ventilation system in the massive wall leads to higher heat gains due to the air convection, but this growth is not in the same proportion for the different materials. If solid brick or earth is used, heat gain values are much higher than those obtained if there is no ventilation system, increasing to the double in the case of earth and 2.5 times more in the case of solid brick. When the massive wall is ventilated and made of granite, an increase in the gains of 44.06% is obtained when compared with the non-ventilated. During the cooling season, closing the ventilation system and the external shutter leads to heat gains considerably lower than those obtained during the heating season. In this case, earth can be a suitable material.

ACS Style

Ana Cristina Briga Sá; Analisa Martins; José Boaventura-Cunha; João Carlos Lanzinha; Anabela Paiva. An analytical approach to assess the influence of the massive wall material, thickness and ventilation system on the Trombe wall thermal performance. Journal of Building Physics 2017, 41, 445 -468.

AMA Style

Ana Cristina Briga Sá, Analisa Martins, José Boaventura-Cunha, João Carlos Lanzinha, Anabela Paiva. An analytical approach to assess the influence of the massive wall material, thickness and ventilation system on the Trombe wall thermal performance. Journal of Building Physics. 2017; 41 (5):445-468.

Chicago/Turabian Style

Ana Cristina Briga Sá; Analisa Martins; José Boaventura-Cunha; João Carlos Lanzinha; Anabela Paiva. 2017. "An analytical approach to assess the influence of the massive wall material, thickness and ventilation system on the Trombe wall thermal performance." Journal of Building Physics 41, no. 5: 445-468.

Journal article
Published: 01 March 2017 in Energy and Buildings
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Despite being a material used over time, soil has lost its space as a building material with the appearance of the most diverse materials and techniques that today are considered traditional. However, with the latest environmental and energetic concerns, earth construction techniques appear revitalized. Recently, the Interlocking Compressed Earth Block (ICEBs) masonry system has experienced considerable development. Some studies prove the potential of new stabilization techniques, such as alkaline activation, to improve the mechanical performance and the durability of the blocks, allowing the incorporation of industrial by- products. The high energy consumption for buildings acclimatization has been another aspect of high discussion. Many times, buildings constructed with earth are referred as an example with respect to the thermal performance. In this sense, an assessment of the heat transfer coefficient of the ICEBs was carried out. The results show that the ICEBs system performs poorly when compared to other current construction materials regarding the heat transfer coefficient, but presents an improvement when stabilization is done with alkali activated fly ash compared to other earth based materials.This work is financed by FEDER funds through the Competitivity Factors Operational Programme – COMPETE and by national funds through FCT − Foundation for Science and Technology within the scope of the project POCI-01-0145-FEDER-007633. The financial support provided by the FCT through the scholarship SFRH/BD/111346/2015 is also gratefully acknowledged.info:eu-repo/semantics/publishedVersio

ACS Style

Dinis Leitão; José Barbosa; Edgar Soares; Tiago Miranda; Nuno Cristelo; Ana Briga-Sá. Thermal performance assessment of masonry made of ICEB’s stabilised with alkali-activated fly ash. Energy and Buildings 2017, 139, 44 -52.

AMA Style

Dinis Leitão, José Barbosa, Edgar Soares, Tiago Miranda, Nuno Cristelo, Ana Briga-Sá. Thermal performance assessment of masonry made of ICEB’s stabilised with alkali-activated fly ash. Energy and Buildings. 2017; 139 ():44-52.

Chicago/Turabian Style

Dinis Leitão; José Barbosa; Edgar Soares; Tiago Miranda; Nuno Cristelo; Ana Briga-Sá. 2017. "Thermal performance assessment of masonry made of ICEB’s stabilised with alkali-activated fly ash." Energy and Buildings 139, no. : 44-52.

Journal article
Published: 01 March 2017 in Energy and Buildings
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ACS Style

Ana Briga-Sá; José Boaventura-Cunha; João Lanzinha; Anabela Paiva. An experimental analysis of the Trombe wall temperature fluctuations for high range climate conditions: Influence of ventilation openings and shading devices. Energy and Buildings 2017, 138, 546 -558.

AMA Style

Ana Briga-Sá, José Boaventura-Cunha, João Lanzinha, Anabela Paiva. An experimental analysis of the Trombe wall temperature fluctuations for high range climate conditions: Influence of ventilation openings and shading devices. Energy and Buildings. 2017; 138 ():546-558.

Chicago/Turabian Style

Ana Briga-Sá; José Boaventura-Cunha; João Lanzinha; Anabela Paiva. 2017. "An experimental analysis of the Trombe wall temperature fluctuations for high range climate conditions: Influence of ventilation openings and shading devices." Energy and Buildings 138, no. : 546-558.

Journal article
Published: 01 January 2017 in Procedia Computer Science
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ACS Style

Sandra Pereira Da Silva Cunha; Elisabete Silva; Francisco Pereira; Ana Briga-Sá; Sandra Pereira. From water to energy: low cost water & energy consumptions readings. Procedia Computer Science 2017, 121, 960 -967.

AMA Style

Sandra Pereira Da Silva Cunha, Elisabete Silva, Francisco Pereira, Ana Briga-Sá, Sandra Pereira. From water to energy: low cost water & energy consumptions readings. Procedia Computer Science. 2017; 121 ():960-967.

Chicago/Turabian Style

Sandra Pereira Da Silva Cunha; Elisabete Silva; Francisco Pereira; Ana Briga-Sá; Sandra Pereira. 2017. "From water to energy: low cost water & energy consumptions readings." Procedia Computer Science 121, no. : 960-967.

Journal article
Published: 13 July 2016 in International Journal of Architectural Heritage
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A research work focused on studying earth render for tabique application purposes is presented. Initially, a brief description of the tabique building technique is provided. The relevance of the application of this traditional building technique is also highlighted. Different compositions of earth render are experimentally analyzed and the respective performance is evaluated. Flexural and compressive strengths, workability, drying shrinkage cracking, and water resistance are the material properties assessed. A simple earth render is selected as being adequate for tabique building applications and it is applied on the manufacturing of a tabique wall sample. This wall sample is monitored in terms of thermal insulation ability and its thermal transmission coefficient is estimated. Taking into account that there is still a lack of published technical information related to this topic, this article may contribute to solve this limitation and to give some guidance in future repairing processes of tabique construction. The technological benefit of adding lime or cement with earth is researched. Real tabique timber structure samples are applied in order to validate the obtained experimental results.

ACS Style

Jorge Pinto; Sandra Pereira Da Silva Cunha; Nuno Soares; Edgar Soares; Vítor M. C. F. Cunha; Débora Ferreira; Ana Briga Sá. Earth-based Render of Tabique Walls – An Experimental Work Contribution. International Journal of Architectural Heritage 2016, 11, 185 -197.

AMA Style

Jorge Pinto, Sandra Pereira Da Silva Cunha, Nuno Soares, Edgar Soares, Vítor M. C. F. Cunha, Débora Ferreira, Ana Briga Sá. Earth-based Render of Tabique Walls – An Experimental Work Contribution. International Journal of Architectural Heritage. 2016; 11 (2):185-197.

Chicago/Turabian Style

Jorge Pinto; Sandra Pereira Da Silva Cunha; Nuno Soares; Edgar Soares; Vítor M. C. F. Cunha; Débora Ferreira; Ana Briga Sá. 2016. "Earth-based Render of Tabique Walls – An Experimental Work Contribution." International Journal of Architectural Heritage 11, no. 2: 185-197.

Journal article
Published: 01 April 2016 in Energy and Buildings
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Highlights•The tabique construction is put into context and its relevance worldwide is done.•Schist tiles coating of tabique walls as a traditional solution is highlighted.•The thermal insulation benefit of this coating is experimentally studied.•A thermal insulation reinforcement was proposed and its gain was estimated. AbstractTabique construction is part of the Portuguese heritage and similar techniques are applied worldwide. Therefore, research works developed on this field may be an added value to future retrofitting processes. In this context, an experimental analysis of the thermal behaviour of three different solutions of tabique walls is presented. These solutions are an uncoated tabique wall, a tabique wall coated with schist tiles and a tabique wall coated with schist tiles and thermally retrofitted with the application of a current insulation material. The obtained experimental results may give a contribution to better understand the thermal behaviour of this type of traditional building elements and also to help future studies focused on achieving energy efficiency solutions to be applied in this context. It was concluded that a simple tabique wall has adequate thermal behaviour for current applications, that coating this building element with a schist tiles layer improves its thermal insulation ability and adding a current thermal insulation material is possible and thermally efficient.

ACS Style

Ana Briga Sá; Sandra Pereira; Nuno Soares; Jorge Pinto; João Carlos Lanzinha; Anabela Paiva; Sandra Pereira Da Silva Cunha. An approach on the thermal behaviour assessment of tabique walls coated with schist tiles: Experimental analysis. Energy and Buildings 2016, 117, 11 -19.

AMA Style

Ana Briga Sá, Sandra Pereira, Nuno Soares, Jorge Pinto, João Carlos Lanzinha, Anabela Paiva, Sandra Pereira Da Silva Cunha. An approach on the thermal behaviour assessment of tabique walls coated with schist tiles: Experimental analysis. Energy and Buildings. 2016; 117 ():11-19.

Chicago/Turabian Style

Ana Briga Sá; Sandra Pereira; Nuno Soares; Jorge Pinto; João Carlos Lanzinha; Anabela Paiva; Sandra Pereira Da Silva Cunha. 2016. "An approach on the thermal behaviour assessment of tabique walls coated with schist tiles: Experimental analysis." Energy and Buildings 117, no. : 11-19.

Research article
Published: 14 November 2014 in Building Services Engineering Research and Technology
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Tabique is a traditional Portuguese building technique using timber and earth and was intensively applied until the 20th century. There is an impressive tabique heritage that requires maintenance and rehabilitation interventions. Taking into account the facts that technical and scientific publications related to this particular technique are lacking and that the technique is also applied worldwide, this research work is a very relevant one. This study aims at studying the thermal insulation behaviour of tabique walls and in particular, tabique walls coated using metal corrugated sheets and thermally reinforced with an insulation material. This type of building component is initially characterized and some building details concerning the metal corrugated sheet coating are described. An experimental work was conducted to determine the thermal transmission coefficient of the tabique wall samples. It was concluded that providing the tabique wall coated with metal corrugated sheets with a 3 cm extruded polystyrene board results in a thermal insulation improvement of 61%. These results revealed that the thermal insulation reinforcement of tabique walls is possible and it may be a straightforward building procedure because it can be achieved using the thermal insulation building materials that are currently being used. Therefore, the thermal insulation reinforcement of tabique walls seems feasible. Furthermore, the thermal insulation parameters obtained in this study are similar to the ones obtained for currently applied walls solutions in new buildings. This technical fact may provide guidance for the possibility of using solutions used in old buildings to meet the thermal comfort requirements expected in today’s times. The knowledge gained will also be useful to support future proposals of energy rehabilitation solutions. Practical implications: In this article, tabique construction and its relevance worldwide are discussed. This article highlights the building details concerning the use of metal corrugated sheet coating on tabique walls and evaluates the thermal insulation behaviour of this wall system. The outcomes indicate that it is possible to improve the thermal insulation of a tabique wall. The data obtained in this study may be valuable for repairing tabique walls and may also inspire innovative building solutions in modern industrial practice.

ACS Style

Sandra Pereira Da Silva Cunha; Jorge Pinto; Anabela Paiva; Ana Briga-Sá; Nuno Soares; Humberto Varum; Débora Ferreira. A contribution for the improvement in thermal insulation of tabique walls coated with metal corrugated sheets. Building Services Engineering Research and Technology 2014, 36, 439 -454.

AMA Style

Sandra Pereira Da Silva Cunha, Jorge Pinto, Anabela Paiva, Ana Briga-Sá, Nuno Soares, Humberto Varum, Débora Ferreira. A contribution for the improvement in thermal insulation of tabique walls coated with metal corrugated sheets. Building Services Engineering Research and Technology. 2014; 36 (4):439-454.

Chicago/Turabian Style

Sandra Pereira Da Silva Cunha; Jorge Pinto; Anabela Paiva; Ana Briga-Sá; Nuno Soares; Humberto Varum; Débora Ferreira. 2014. "A contribution for the improvement in thermal insulation of tabique walls coated with metal corrugated sheets." Building Services Engineering Research and Technology 36, no. 4: 439-454.

Journal article
Published: 01 September 2014 in Science of The Total Environment
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Wastewater and greywater have different scales of end-uses in irrigation in Portugal. Wastewater is treated in a central wastewater treatment plant and reused in public/private large areas of irrigation, like agriculture, public gardens and golf courses. On the contrary, greywater reuse is generally applied in in situ small scales, treated and used in the same place, generally in the production site. The main aim of this paper is to compare the two types of systems: a wastewater centralized reuse system (WWCRS) and a greywater decentralized reuse system (GWDRS) in terms of water quality, energy consumption and CO2 emissions. In this paper, the main characteristics of both streams are presented and the degree of treatment required in each stream is analyzed. The advantages and disadvantages of its reuse in different scales, in terms of water quality, energy consumption and CO2 emissions are discussed. A methodology to calculate the energy consumptions and CO2 emissions related to wastewater treatment that may be applied in different cases is presented. A hypothetical example of the two systems: one referring to a WWCRS and the other to a GWDRS is presented. The energy consumption and the CO2 emissions are analyzed and compared. The WWCRS needs a higher degree of treatment and so it spends more energy and leads to more CO2 emissions to the environment than the GWDRS that consumed between 11.8 and 37.5% of the energy consumed in the WWCRS considering the same number of inhabitants served.

ACS Style

C. Matos; S. Pereira; E.V. Amorim; I. Bentes; A. Briga-Sá. Wastewater and greywater reuse on irrigation in centralized and decentralized systems — An integrated approach on water quality, energy consumption and CO2 emissions. Science of The Total Environment 2014, 493, 463 -471.

AMA Style

C. Matos, S. Pereira, E.V. Amorim, I. Bentes, A. Briga-Sá. Wastewater and greywater reuse on irrigation in centralized and decentralized systems — An integrated approach on water quality, energy consumption and CO2 emissions. Science of The Total Environment. 2014; 493 ():463-471.

Chicago/Turabian Style

C. Matos; S. Pereira; E.V. Amorim; I. Bentes; A. Briga-Sá. 2014. "Wastewater and greywater reuse on irrigation in centralized and decentralized systems — An integrated approach on water quality, energy consumption and CO2 emissions." Science of The Total Environment 493, no. : 463-471.

Journal article
Published: 01 May 2014 in Energy and Buildings
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ACS Style

Ana Briga-Sá; Analisa Martins; José Boaventura-Cunha; João Carlos Lanzinha; Anabela Paiva. Energy performance of Trombe walls: Adaptation of ISO 13790:2008(E) to the Portuguese reality. Energy and Buildings 2014, 74, 111 -119.

AMA Style

Ana Briga-Sá, Analisa Martins, José Boaventura-Cunha, João Carlos Lanzinha, Anabela Paiva. Energy performance of Trombe walls: Adaptation of ISO 13790:2008(E) to the Portuguese reality. Energy and Buildings. 2014; 74 ():111-119.

Chicago/Turabian Style

Ana Briga-Sá; Analisa Martins; José Boaventura-Cunha; João Carlos Lanzinha; Anabela Paiva. 2014. "Energy performance of Trombe walls: Adaptation of ISO 13790:2008(E) to the Portuguese reality." Energy and Buildings 74, no. : 111-119.

Research article
Published: 31 January 2013 in Construction and Building Materials
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The adoption of more sustainable behaviors, particularly in what concerns to the reduction of energy consumption and the emissions of greenhouse gases, is nowadays a priority. The construction sector is one of the key areas of intervention, which carries a high consumption of resources such as materials, energy, and water. Thus, it is essential to adopt more efficient actions during all stages of the construction process, including the use of more sustainable materials. The reuse of different types of waste in the construction or rehabilitation of buildings can contribute significantly to sustainability. In this research work, the potential applicability of woven fabric waste (WFW) and a waste of this residue, named woven fabric subwaste (WFS), as thermal insulation building material was studied. Experimental work was conducted using an external double wall, with the air-box filled with these two types of waste, to determine their thermal characteristics. Two heat flowmeters and four surface temperatures sensors were placed on the wall surface to determine the thermal conductivity of the wastes. The obtained results show that the application of the WFW and WFS in the external double wall increases its thermal behavior in 56% and 30%, respectively. The thermal conductivity value of the WFW is similar to the values obtain for expanded polystyrene (EPS), extruded polystyrene (XPS) and mineral wool (MW). The value of this parameter for the WFS is approximately equal to the values for granules of clay, vermiculite or expanded perlite. Therefore, applying these wastes as a possible thermal insulation material seems to be an adequate solution. Environmental, sustainable and economical advantages may result from this practice.

ACS Style

Ana Briga-Sá; David Nascimento; Nuno Teixeira; Jorge Pinto; Fernando Caldeira; Humberto Varum; Anabela Paiva. Textile waste as an alternative thermal insulation building material solution. Construction and Building Materials 2013, 38, 155 -160.

AMA Style

Ana Briga-Sá, David Nascimento, Nuno Teixeira, Jorge Pinto, Fernando Caldeira, Humberto Varum, Anabela Paiva. Textile waste as an alternative thermal insulation building material solution. Construction and Building Materials. 2013; 38 ():155-160.

Chicago/Turabian Style

Ana Briga-Sá; David Nascimento; Nuno Teixeira; Jorge Pinto; Fernando Caldeira; Humberto Varum; Anabela Paiva. 2013. "Textile waste as an alternative thermal insulation building material solution." Construction and Building Materials 38, no. : 155-160.

Journal article
Published: 29 February 2012 in Energy and Buildings
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An alternative expedite experimental set-up is proposed to evaluate the thermal insulation performance of corn cob particleboards. Testing in situ thermal insulation performance under real thermal and hygrometric conditions, using more realistic sample dimensions, testing simultaneously several samples and monitoring continuously for several days the thermal behavior of a product are some advantages of this proposed technique. Therefore, it has shown to be accurate and versatile. Through this experimental methodology, a parametric thermal insulation study of the corn cob particleboard in which the impact of its thickness on its thermal insulation performance was also possible to perform.

ACS Style

Anabela Paiva; Sandra Pereira; Ana Briga-Sá; Daniel Cruz; Humberto Varum; Jorge Pinto. A contribution to the thermal insulation performance characterization of corn cob particleboards. Energy and Buildings 2012, 45, 274 -279.

AMA Style

Anabela Paiva, Sandra Pereira, Ana Briga-Sá, Daniel Cruz, Humberto Varum, Jorge Pinto. A contribution to the thermal insulation performance characterization of corn cob particleboards. Energy and Buildings. 2012; 45 ():274-279.

Chicago/Turabian Style

Anabela Paiva; Sandra Pereira; Ana Briga-Sá; Daniel Cruz; Humberto Varum; Jorge Pinto. 2012. "A contribution to the thermal insulation performance characterization of corn cob particleboards." Energy and Buildings 45, no. : 274-279.