Browsing by Author "Villa Enderica, Jonnathan Daniel"

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Análisis térmico comparativo de las cubiertas mayormente utilizadas en la ciudad de Cuenca, a partir de simulación digital térmica
(Universidad de Cuenca, 2024-02-21) Villa Enderica, Jonnathan Daniel; Torres Quezada, Jefferson Eloy
The building envelope is the part of the structure that interacts with the environment. In buildings, approximately 33% of heat loss occurs through the walls. However, in countries with low latitudes, the roof is the critical structure because it is the main component exposed to solar radiation, which accounts for about 50 to 60% of the thermal energy exchange between the interior and exterior. In recent decades, Cuenca and Ecuador have undergone significant changes in their construction systems. The displacement of vernacular construction with new, more industrialized systems has resulted in greater productivity in construction time and costs, but has also led to the neglect of the climatic characteristics of the place. As a consequence, light tile roofs made of reed, mud, and stucco have been completely replaced by roofs with other technologies. The methodology used for this study is based on digital simulations utilizing the Design Builder software and the Energy Plus calculation engine. The analyzed case studies pertain to the most commonly used roof types in Cuenca construction. The study concluded that optimizing the radiative properties on the exterior surface of the roof, along with thermal mass and air cavity, is crucial. By applying these strategies, we were able to regularize the heat flow, resulting in low thermal oscillations and improved interior temperature conditions. This led to better performance for a heavy roof and, most importantly, significantly enhanced the performance of a light roof in our climatic environment.
Comparative analysis of thermal comfort of a single-family house in LSF and brick masonry
(2022) Brito Peña, Jaime Rodrigo; Villa Enderica, Jonnathan Daniel; Zalamea León, Esteban Felipe
Residential construction in Ecuador has recently grown by 35.6%. The typical construction system for housing envelopes is concrete block or brick, construction in LSF, Light Steel Framing or galvanized steel frames (LSF,) is emerging. To solve the housing demand, the thermal interior comfort of a two-story single-family home in the city of Cuenca is evaluated with both construction systems to know the comfort standards offered by homes in accordance with the Ecuadorian Construction Standard. (NEC). The research was carried out with Design Builder and Therm where the parameters that influence the energy performance of homes are analyzed. Under local conditions, the predominant system reaches annual hourly thermal comfort values of 51%, but the LSF system reaches 62%. However, with improvement strategies in the overall envelope, the LSF reaches 86%. The variables in order from greater to lesser thermal influence resulted: Air infiltrations, construction system of the envelope and implantation of the house. In Cuenca it is feasible to use the LSF with minimum insulation to reach acceptable levels of comfort, being an adequate alternative to promote to build single-family homes.
Evaluación del confort térmico de una vivienda unifamiliar proyectada con Steel Frame optimizada acorde a la sección estructural
(Universidad de Cuenca, 2020-12-23) Brito Peña, Jaime Rodrigo; Villa Enderica, Jonnathan Daniel; Zalamea León, Esteban Felipe
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.