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Evaluating the potential of an indirect evaporative passive cooling system for Brazilian dwellings

机译：评估巴西住宅间接蒸发被动冷却系统的潜力

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摘要

The purpose of this study is to assess the applicability of an indirect evaporative passive cooling system (IEPCS) in prototypical dwelling modeled for locations across the Brazilian territory. The thermal performance of the IEPCS is analyzed, originally developed for a dwelling located in hot-humid Maracaibo, Venezuela (Vivienda Bioclimatica Prototipo - VPB-1). Diverse configuration modes were tested as part of the experimental field study, from which predictive formulas were generated and validated. The paper shows results of the expected thermal performance of the IEPCS for 411 Brazilian cities, which were obtained from the application of predictive formulas to a database consisting of TMY (Typical Meteorological Year) climate files. The efficiency of the passive cooling system was evaluated for each city with regard to its capability in reducing indoor temperatures relative to outdoors as well as Degree-Day percentages above the upper limit of the adaptive comfort zone. Detailed results for four Brazilian locations are also discussed. Results suggest that the system is capable of ensuring thermal comfort conditions for most of the cities evaluated. Average indoor temperatures reached reductions up to 2.5 ℃ below outdoor conditions; such reductions depend fundamentally on the wet bulb temperature depression. From such results, it is suggested that the IEPCS could have a great applicability in Brazil with a strong potential for improving indoor comfort conditions and, in the case of air-conditioned buildings, also promote a reduction of the energy demand on HVAC.
机译：这项研究的目的是评估间接蒸发式被动冷却系统（IEPCS）在以巴西领土为模型的原型住宅中的适用性。分析了IEPCS的热性能，最初是为委内瑞拉湿热的马拉开波（Vivienda Bioclimatica Prototipo-VPB-1）上的住宅开发的。作为实验现场研究的一部分，测试了多种配置模式，从中生成并验证了预测公式。本文显示了对411个巴西城市的IEPCS预期热性能的结果，这些结果是通过将预测公式应用到由TMY（典型气象年）气候文件组成的数据库中获得的。针对每个城市评估了被动冷却系统的效率，以评估其相对于室外的降低室内温度的能力，以及超过适应性舒适区上限的度日百分比。还讨论了巴西四个地点的详细结果。结果表明，该系统能够确保大多数评估城市的热舒适条件。室内平均温度比室外条件降低了2.5℃；这种降低基本上取决于湿球温度的下降。从这些结果可以看出，IEPCS在巴西具有很大的应用潜力，具有改善室内舒适条件的强大潜力，对于空调建筑，还可以促进减少HVAC的能源需求。

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  • 来源
    《Building and Environment》 |2015年第5期|265-273|共9页
  • 作者

    Eduardo Gonzalez Cruz; Eduardo Krueger;

  • 作者单位

    Facultad de Arquitectura y Diseno, Universidad del Zulia, Nucleo Tecnico de LUZ, Av. Goajira (16) con Calle 67, Maracaibo CP 4011-A-526, Venezuela,Program in Architecture and Urban Planning of the Federal University of Santa Catarina, Brazil;

    Programa de Pos-Graduacao em Tecnologia/Programa de Pos-Graduacao em Engenharia Civil, Departamento de Construcao Civil, Universidade Tecnologica Federal do Parana - UTFPR, Av. Sete de Setembro, 3165, Curitiba, PR CEP. 80230-901, Brazil;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Passive cooling; Indirect evaporative cooling; Indoor temperature prediction; Thermal comfort;

    机译：被动冷却间接蒸发冷却;室内温度预测;热舒适;

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