Percorrer por autor "Bastos, Jorge"
A mostrar 1 - 4 de 4
Resultados por página
Opções de ordenação
- Residential buildings with large glazing areas :experimental analysis during heating and cooling seasonsPublication . Tavares, Márcia; Goncalves, Helder; Bastos, JorgeThis study presents the results of a monitoring study carried out in residential buildings with considerable glazing areas (more than 70% of the façade) with different solar exposures in Lisbon. The monitoring was performed during the summer and winter months in 2007-2008 (first phase) and 2008-2009 (second phase). Temperature and relative humidity sensors were installed in 23 units (45 compartments) with different solar dispositions and localizations in several buildings with specifi relevant characteristics for study. A large portion of the units showed uncomfortable temperatures most of the time during summer and winter monitoring (comfort temperatures 20ºC and 25ºC respectively for winter and sunmer). Some factors were of great influence on the results: these were in some way directly related to the daily habits of the residents. The professional needs to take care with the glazing areas and solar protectio in these kinds of buildings, to make them more sustainable.
- Thermal performance of residential buildings in Lisbon with large glazing areasPublication . Tavares, Márcia; Goncalves, Helder; Bastos, JorgeThis work presents the results of an experimental study of residential buildings (multi-family apartments) with glazing areas greater than 75% of the total façade area, and for different solar exposures in Lisbon. These buildings were designed after the implementation of the first Portuguese Buildings Thermal Regulation and they are intrinsically related with the construction and architecture practiced in the last few years. The analysis includes the thermal behaviour of the apartments selected for the study during the summer (2007) and winter (2007-2008). During the monitoring process important data were obtained to assist in the understanding of the thermal performance of the observed units. The main thermal exchanges in a building generally take place through the transparent elements and these can be considered an element of great flexibility and adaptation to climatic variations. The mean of the interior temperature means in the different monitored compartments during the hot season was approximately 27ºC (some cases close to 29ºC), while in the cold season 21ºC (some cases close to 18ºC).
- Thermal performance of residential buildings with large glazing areas temperature climatePublication . Tavares, Márcia; Goncalves, Helder; Bastos, JorgeThis work presents the results of an experimental and numerical study of a residential buildings in a temperature climate, the paticularity of these bulding the large glazing areas around 65% to 85% of exterior façade. The thermal performance is presented and dicussed. The study was developed taking into account the implementation of monitoring during the summer and winter for a housing unit in an intermediate floor with only one façade in contact with the exterior (south façade) without solar protection by the glass (glazing area 80% exterior façade) located in Lisbon, Portugal (Latitude 40º N9; as well as detailed modeling of this unit using EnergyPlus for thermal simulation. The detailed model took into account the characteristics of the housing unit and the conditions under which it was monitored during the summer and winter. To simulate the detailed model under the monotored conditions the climatic data was cerefully introduced in the thermal simulation (climate file), the data was obtaines from the metereological stations of the National Laboratory for Energy and Geology (LNEG, Lisbon) for the same periods of the monitoring. From the detailed model different parametric variations were performed (summer and winter). Thus we obtained a set of effects that let you chek the parameters of major and minor influence on the thermal performance of housing units with large glazing areas situated in temperate climates. This work intends to provide tools and guidance to building designers with regard to the thermal performance of buildings.
- Thermal Performance of Residential Buildings withe Large Glazing areas in Lisbon - Modelling and ValidationPublication . Tavares, Márcia; Goncalves, Helder; Bastos, JorgeThis work aims to demonstrate the parameters of both major and minor influence on the thermal performance of units with large glazing areas, whether with one face or two exposed. The study was developed after a two year monitoring campaign in a group of 23 building apartments (the units have more than 60% of the main façades in glazing. The main goal was to carry out a representative model that can be validated by the experimental results in order develop a set of parametric studies for the Lisbon Climate. Part of the modeling included the development of detailed and simplified geometrical models related to the units selected for the study. Different parametric variations were performed (summer and winter) using the detailed and simplified geometrical models. These took into account the characteristics of each housing unit and the conditions under which they were monitored in summer and winter. The thermal simulation software EnergyPlus (with the calculation model present in this software) was used to simulate all solutions and models. Thus, the study allows not only comparison but also the evaluation and validation of the models.