Abstract
The residential sector is one of the biggest consumers of electric energy, especially in zones with extreme dry-hot climates such as Mexicali. The implementation of NOM-020- ENER-2011 energy efficiency standards for the envelope of the dwelling is essential to provide thermal comfort with a lower energy consumption. The goal of this article is to evaluate the application of energy efficiency standards in three housing models: The first one was a prototype of mass-built housing (commercial model) and the remaining were demonstrative dwelling prototypes built with bioclimatic criteria. The analysis was made with the digital calculation tools provided by the Secretary of Energy and the National Commission for the Efficient Use of Energy. The results showed that for the commercial dwelling to reach the energy efficiency standards, it is required to diminish the overall heat transfer coefficient. Therefore, it was achievable to improve the energetic efficiency by including the bioclimatic housing criteria. Although important efforts have been made to optimize the housing design, they have not been effective enough to improve the energy efficiency of the mass-built housing.
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