Numerical simulation of exterior condensations on façades: The undercooling phenomenon

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Delgado, JMPQ (Author) Other; De Freitas, VP (Author) Other; Nuno Ramos (Author) FEUP; Eva Barreira (Author) FEUP

Conference proceedings International

Title: Thermal Performance of the Exterior Envelopes of Whole Buildings - 11th International Conference

11th International Conference on Thermal Performance of the Exterior Envelopes of Whole Buildings, Buildings XI

5 December 2010 through 9 December 2010

Indexing

Scopus - 2 Citations

Other information

Authenticus ID: P-00A-0S6

Abstract (EN): This manuscript presents a brief state-of-the-art on the development and application of hygrothermal analysis methods to simulate the coupled transport processes of heat and moisture for one or multidimensional cases. This work intends to apply existing numerical models of exterior boundary conditions on the simulation of exterior condensation on façades (undercooling phenomenon) finished with external thermal insulation composite systems (ETICS). The results of three hygrothermal models were compared, regarding the temperature on the exterior surface of a west façade. The climatic conditions from the city of Porto, Portugal were used. We analyzed in detail how the simulation of the undercooling phenomenon is influenced by the numerical treatment of the radiative balance on the exterior surface. The numerical results show that these programs are useful tools in assessing the exterior condensation on façades and the importance of radiative balance on the exterior surface temperature. However, some differences were observed in the calculated values due to different parameters included in the radiative balance of the models. © 2010 ASHRAE.

Language: English

Type (Professor's evaluation): Scientific