Test box experiment to assess the impact of waterproofing materials on the energy gain of building roofs in Mexico

被引：9

作者：

Hernandez-Perez, I. ^{[1
]}

Zavala-Guillen, I. ^{[2
]}

Xaman, J. ^{[3
]}

Belman-Flores, J. M. ^{[4
]}

Macias-Melo, E. V. ^{[1
]}

Aguilar-Castro, K. M. ^{[1
]}

机构：

[1] Univ Juarez Autonoma Tabasco, Div Acad Ingn & Arquitectura DAIA UJAT, Carretera Cunduacan Jalpa Mendez Km 1, Cunduacan 86690, Tabasco, Mexico

[2] CICESE, Carretera Ensenada Tijuana 3918, Ensenada 22860, Baja California, Mexico

[3] CENIDET, Tecnol Nacl Mexico, Prol Av Palmira S-N, Cuernavaca 62490, Morelos, Mexico

[4] Univ Guanajuato, Engn Div, Dept Mech Engn, Campus Irapuato Salamanca,Km 3-5 1-8, Guanajuato 36885, Mexico

来源：

ENERGY | 2019年 / 186卷

关键词：

Concrete roofs; Energy behavior; Waterproofing materials; Test boxes; STYRENE ACRYLATE COPOLYMER; COOL ROOFS; THERMAL PERFORMANCE; SOLAR REFLECTANCE; HEAT GAIN; EFFICIENCY; STANDARDS; MITIGATE; CEMENT; PAINTS;

D O I：

10.1016/j.energy.2019.07.177

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In Mexico, the owners of homes use roof coating materials for waterproofing purposes and usually select them just for aesthetic reasons. In this work, four concrete roofs with different waterproofing materials (terracotta, white, gray, and black) were tested under weather conditions of Cuernavaca, Mexico. A set-up with two outdoor test boxes in which the roofs can be exchanged was monitored for six weeks of spring 2015. Three comparative tests (terracotta-black, white-black, and gray-black) were carried out during the period with the highest solar radiation of the year. The results showed that the white roof (WR) had the best thermal performance, under peak solar irradiance it was 29 degrees C cooler than the black roof (BR) and just 1.5 degrees C hotter than the outdoor air. Moreover, the average daily energy gain of the WR was 73% smaller than the BR. The terracotta roof (TR) and the gray roof (GR) had peak temperatures of 10 and 14 degrees C lower than the BR. Moreover, the TR and the GR had daily energy gains 33 and 38% smaller than the BR, respectively, but they are significant compared to one of the WR. Therefore, white waterproofing materials for roofs should be used in Mexico as a passive cooling strategy to prevent solar energy gains of buildings. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页数：12

共 44 条

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