Evaluación del confort térmico de una vivienda unifamiliar proyectada con Steel Frame optimizada acorde a la sección estructural

Abstract

In the country, in the last 15 years, the construction sector has grown 35.6%. According to INEC statistics in 2017, residential buildings are those that occupy the first place. Most of the licenses correspond to single-family homes with 59.1%. The Cuenca city ranks the fourth place in construction licenses nationwide. The most widespread construction system for building in the country is the traditional masonry of block or brick and reinforced concrete. The predominant materials are block and brick. Manufactured housing barely has a 2.9% of demand in the national market. To solve the housing demand in Ecuador, the objective is to evaluate the thermal interior comfort of a single-family home with two floors in the city of Cuenca with the LSF construction system to meet the thermal comfort standards established in the NEC Standard. The research is carried out virtually using the Design Builder software. The analysis is carried out in several stages where the different parameters that influence the thermal interior comfort of the houses are analyzed to know the energy performance of both construction systems. The results of the thermal discomfort of the users in the different houses vary depending on the parameters and the construction system. The reference homes, in their current state, with the traditional mixed brick and steel construction system, the average percentage of annual hours in thermal interior comfort is 51%. In contrast, homes with the LSF system with the Standard Optimization Strategies reach an annual average of 62%. The efficiency of the house with the LSF system is higher when high optimization strategies are used; values go up to 86%. The most important variables for energy efficiency for buildings in the city of Cuenca, orderly from highest to lowest thermal influence are; Air infiltrations, Construction system, Implementation of the house. In the City, single-family homes with two floors can be built with the LSF system with cold-type walls.