Browsing by Author "Vera, S."
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- ItemAnalysis of Net Zero Energy Buildings public policies at the residential building sector: A comparison between Chile and selected countries(2022) Tori, F.; Bustamante Gomez, Waldo Enrique; Vera, S.; CEDEUS (Chile)
- ItemCooling potential of greenery systems for a stand-alone retail building under semiarid and humid subtropical climates(2022) García, M.; Vera, S.; Rouault, F.; Gironás, J.; Bustamante Gomez, Waldo Enrique; CEDEUS (Chile)
- ItemEnergy and structural optimization of mid-rise light-frame timber buildings: Analyzing different climates and seismic zones(2023) Wenzel Schwarzenberg, Alexander Antonio; Vera, S.; Guindos Bretones, PabloThe location determines not only the structural loads but also the climate one timber structure must withstand. Given the broad variety of climatic and seismic conditions of Chile, this country may be regarded as a natural laboratory for analyzing how energetic and structural requirements of design are interrelated. In fact, the optimal design of timber buildings considering both energetic-thermic and structural-seismic requirements can be a very difficult task. The main objective of this research was to analyze and quantify the effect of climates, seismic loads, lateral anchorages, and story number on the optimal designs of light-frame timber buildings. This has been analyzed by conducting a parametric analysis of a coupled numerical model considering five Chilean cities' that considerably differ in terms of climates, seismic risk, numbers of stories and lateral anchorage systems. A case study building that adequately represent the typical national archetype was chosen for the analysis. The results indicate that the optimal wall insulation thickness, stud spacing, and thermal mass exhibited significant variations depending on the buildings' number of stories, lateral anchorage system, climate, and seismic zone. Therefore, the results of this investigation reinforce the importance, or rather, necessity of performing holistic designs of timber buildings, since the optimal buildings’ designs obtained in this investigation shown considerable variations and evidence the interconnection of requirements. In the future, more sophisticated models should be constructed to further considering in design additional requirements other than structural and energetic, which should facilitate and optimize the design and competitivity of wood in construction.
- ItemEvaluation of view clarity through solar shading fabrics(2022) Flamant, G.; Bustamante Gomez, Waldo Enrique; Tzempelikos, A.; Vera, S.; CEDEUS (Chile)
- ItemExperimental Studies on the Improvement of the Properties of Plasterboard Through the Addition of Polymethylhydrosiloxane(2023) Videla Leiva, Álvaro Rodrigo; Romano-Matos, V.; Tundidor-Camba, A.; Vera, S.
- ItemGreen roofs and green walls layouts for improved urban air quality by mitigating particulate matter(2021) Viecco, M.; Jorquera, H.; Sharma, A.; Bustamante Gomez, Waldo Enrique; Fernando, H.J.S.; Vera, S.; CEDEUS (Chile)
- ItemIntegration of energy and seismic-structural design variables through the optimization of a multi-story residential light-frame timber building with different seismic lateral connectors and building stories(2022) Wenzel, A.; Vera, S.; Guindos Bretones, Pablo; CEDEUS (Chile)
- ItemInterzonal air and moisture transport through large horizontal openings in a full-scale two-story test-hut: Part 1-Experimental study(PERGAMON-ELSEVIER SCIENCE LTD, 2010) Vera, S.; Fazio, P.; Rao, J.Moisture transport by convection through large horizontal openings in dwellings, such as staircases, could have significant impact on the level, variation and distribution of humidity in each zone of dwellings. Yet, most studies and simulation tools of heat, air and moisture transport in buildings do not consider nor properly model this phenomenon: the lack of experimental data is one of the main causes. The aim of this experimental investigation was to study the air and moisture transport through a horizontal opening in a full-scale two-story test-hut. This study extended the cases with buoyancy-driven flows that have been studied by a handful of existing investigations, to the cases of combined buoyancy airflows and mechanical ventilation and cases with warmer upper room than the lower rooms. The main investigated parameters were different ventilation strategies, ventilation rates, and temperature differences between the lower and upper rooms. In total, 20 cases were tested. Measurements of temperature, relative humidity and air velocity were carried out within both rooms and across the horizontal opening. The air and moisture exchange through the horizontal openings are investigated based on two quantities representing the phenomenon: (i) steady-state difference between the average humidity ratios of the two rooms at the end of the moisture generation period, and (ii) mass airflow rates through the opening. The results show that interzonal air and moisture exchanges through the horizontal openings are strongly linked to the temperature difference between the two rooms, and the mechanical ventilation significantly restricts the interzonal airflows in comparison with cases without mechanical ventilation. (C) 2009 Elsevier Ltd. All rights reserved.
- ItemInterzonal air and moisture transport through large horizontal openings in a full-scale two-story test-hut: Part 2-CFD study(PERGAMON-ELSEVIER SCIENCE LTD, 2010) Vera, S.; Fazio, P.; Rao, J.The aim of this paper is to study the air and moisture transport through a large horizontal opening in a full-scale two-story test-hut with mixed ventilation by means of computational fluid dynamics (CFD) simulations. CFD allows extending the experimental study presented in the companion paper [1] and overcoming some limitations of experimental data. More than 80 cases were simulated for conditions similar to those tested experimentally and for additional ventilation rates and temperature difference between the two rooms. CFD simulations were performed in Airpak and the indoor zero-equation turbulence model was used. The CFD model was extensively validated with the distributions of air speed, temperature and humidity ratio measured across the two rooms, as well as with the measured interzonal mass airflows through the horizontal opening. CFD simulation results show that temperature difference between the two rooms and ventilation rate strongly influence the interzonal mass airflows through the opening when the upper room is colder than the lower room, while warm convective air currents from the baseboard heater and from the moisture source placed in the lower room cause upward mass airflows when the upper room is warmer than the lower room. Finally, empirical relationships between the upward mass airflow and the temperature difference between the two rooms are developed. (C) 2009 Elsevier Ltd. All rights reserved.
- ItemMulticriteria design optimization of multi-storey light-frame timber buildings considering structural and thermal energy performance(2021) Wenzel, A.; Guindos Bretones, Pablo; Vera, S.
- ItemOficity: A new time-efficient tool for control fenestration systems design. Supporting the early stage buildings design process(2018) Bustamante Gomez, Waldo Enrique; Molina, G.; Uribe, D.; Vera, S.