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Analysis of the Methodologic Assumptions of the NOM-020-ENER-2011—Mexican Residential Building Standard

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Departamento de Ingenieria Sustentable, Centro de Investigacion en Materiales Avanzados, Calle CIMAV 110, Ejido Arroyo Seco, Durango 34147, Mexico
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Catedras CONACYT, Centro de Investigacion en Materiales Avanzados, Mexico, Calle CIMAV 110, Ejido Arroyo Seco, Durango 34147, Mexico
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Author to whom correspondence should be addressed.
Environments 2018, 5(11), 118; https://doi.org/10.3390/environments5110118
Received: 20 August 2018 / Revised: 20 October 2018 / Accepted: 30 October 2018 / Published: 1 November 2018
(This article belongs to the Special Issue Smart Energy Management for a Sustainable Built Environment)
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Abstract

In Mexico, residents of low income housing mainly achieve thermal comfort through mechanical ventilation and electrical air conditioning systems. Though government and private efforts have risen to meet an increasing demand for social housing, the average construction quality and thermal comfort of new housing stock has decreased over the years. Various programs and regulations have been implemented to address these concerns, including the 2011 residential building standard NOM-020-ENER-2011. This standard attempts to limit heat gains in residential buildings, in order to reduce the energy consumption required from cooling systems, and was intended to be applied throughout Mexico. NOM-020-ENER-2011, however, divides the country into just four climatic zones and only considers the energy use of cooling systems, disregarding heating costs. The recommendations of this policy are thus inadequate for the many regions in Mexico that have mild to moderate winters. This study discusses the assumptions and calculations that underlie NOM-020-ENER-2011, identifying several problems and recommending specific changes to the standard that would lead to greater comfort and lower energy use throughout Mexico. View Full-Text
Keywords: building code; housing; energy efficiency; energy policy; cooling building code; housing; energy efficiency; energy policy; cooling
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Martin-Dominguez, I.R.; Rodriguez-Muñoz, N.A.; Romero-Perez, C.K.; Najera-Trejo, M.; Ortega-Avila, N. Analysis of the Methodologic Assumptions of the NOM-020-ENER-2011—Mexican Residential Building Standard. Environments 2018, 5, 118.

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