Estudio de sensibilidad de los parámetros que influyen en el comportamiento térmico de una vivienda de quito con ganancias internas usando simulación energética

Abstract

Thermal conditions affect people’s health and performance. Qualitative housing deficit is often used to talk about life quality. Regarding Ecuador, 45% of population lives within this housing deficit. This is due to the lack of constructive guidelines about energetic criteria in early building design. This work aims to establish the basic criteria to improve thermal comfort on dwellings of Quito. In order to accomplish this goal, a sensitivity analysis was conducted to understand the influence of the principal constructive parameters. Five parameters were studied (infiltration rate, glass type, orientation, walls fabrics and WWR) under three different border conditions (adiabatic or exposed roof, adiabatic or exposed walls and number of glazed walls). In order to represent different types of constructions, 17280 building energy simulations were carried out over a generic model of dwelling. Results show that the roof boundary condition is the most important parameter affecting the building thermal performance. Additionally, the use of wall isolation has positive effects on thermal comfort. On the other hand, the number of glazed walls resulted to be the least influential border condition. However, these conditions must be accompanied an appropriate combination of parameters. Thus, the most important parameters turned out to be walls fabrics, WWR, infiltration rate, orientation and glass type. Finally, the thermal behavior of zinc roof dwellings was analyzed. In this case, high thermal discomfort values were found under any parameters combination. With the obtained results, basic guidelines have been established to be implemented in early design phase of residential buildings so thermal comfort can be improved though energetic passive criteria.