6 documents found, page 1 of 1
Evaluation of the Hygrothermal Conditions of a Typical Residential Building in ...
Malça, João; Almeida, Ricardo M. S. F.; Silva, José A. R. MendesThis article contributes to the assessment of the hygrothermal conditions of residential buildings in the Azores archipelago and defines strategies that may contribute to the improvement in indoor air quality. These objectives were fulfilled by in situ monitoring of the hygrothermal conditions of a typical building on Terceira Island. Complementary tests to determine the thermal conductivity of exterior walls a...
Impact of air barriers application in LCA and LCC of naturally ventilated dwell...
Cardoso, Vítor E. M.; Simões, M. Lurdes; Ramos, Nuno M. M.; Almeida, Ricardo M. S. F.; Almeida, Manuela Guedes de; Mateus, RicardoAssessing singular elements that constitute the air barrier of a building envelope is quite unfeasible in Life Cycle Assessment (LCA). The study of these solutions through this particular scope is often overlooked. Two major aspects contribute to it: the complexity of the relationships between elements and the reduced embodied impact of these materials in the overall construction or retrofitting works. This wor...
Towards an airtightness compliance tool based on machine learning models for na...
Cardoso, Vitor E. M.; Simoes, M. Lurdes; Ramos, Nuno M. M.; Almeida, Ricardo M. S. F.; Almeida, Manuela Guedes de; Sanhudo, Luis; Fernandes, Joao N. D.Physical models and probabilistic applications often guide the study and characterization of natural phenomena in engineering. Such is the case of the study of air change rates (ACHs) in buildings for their complex mechanisms and high variability. It is not uncommon for the referred applications to be costly and impractical in both time and computation, resulting in the use of simplified methodologies and setup...
A labelling strategy to define airtightness performance ranges of naturally ven...
Cardoso, Vitor E. M.; Simoes, M. Lurdes; Ramos, Nuno M. M.; Almeida, Ricardo M. S. F.; Almeida, Manuela Guedes de; Fernandes, Joao N. D.Energy efficiency and indoor air quality are frequently-two conflicting objectives when establishing the air change rate (ACH) of a dwelling. In Europe, the northern countries have a clear focus on energy conservation, leading to an obvious awareness of the importance of airtightness, which translates into a high level of regulation and implementation. Meanwhile, the southern counterparts experience a more com-...
Impact of atmospherical stability and intra-hour variation of meteorological da...
Cardoso, Vitor E. M.; Simoes, M. Lurdes; Ramos, Nuno M. M.; Almeida, Ricardo M. S. F.; Almeida, Manuela Guedes de; Conceicao, LigiaIn contrast with structural engineering, where the focus for design is on extreme values, for the proper assessment and modelling of air change rates in natural ventilation and infiltration, one must use the full range of input variables. Most of the modelling in infiltration research relies on hourly datasets for air infiltration balance. This consideration overlooks the intra-hour variability on meteorologica...
Reliability of quantitative and qualitative assessment of air leakage paths thr...
Cardoso, Vitor E. M.; Ramos, Nuno M. M.; Almeida, Ricardo M. S. F.; Almeida, Manuela Guedes de; Pereira, Pedro F.; Prignon, MartinA full characterization of a building air leakage is labour intensive. As results of laboratory and mock-up experimentation rarely portray in situ conditions, the assessment of real case studies bring added value. Still, the results of experimentation of the latter face more challenges than the former. In this work a full quantitative and qualitative assessment of air leakage paths is performed, using a light s...