自然通风工业棚:连续屋面通风口风向对流量效率影响的研究

IF 0.3 4区 工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY
B. Camargos, H. D. Souza, Angélica Maciel Gomes, A. Ladeira, R. Reis, Lidianne de Paula Pinto Mapa
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引用次数: 1

摘要

自然通风是一种有效的技术,可以在不消耗电力的情况下降低内部温度,并通过为工人建立健康的环境直接促进室内空气的更新。考虑到这一点,通常在屋顶的顶部有通风口(连续的屋顶通风口),除了那些存在于棚屋立面上的通风口。在自然通风的建筑物中,建议对这些开口的提供给予应有的重视,因为根据拟议的安排,风可能会或可能不会帮助这种策略的有效性。在这项工作中,通过计算机模拟(EnergyPlus,版本8.7.0),对巴西贝洛奥里萨里特市的气候条件进行了评估,在具有高强度热量释放内部源的工业棚内,风向对通过脊状通风口的室内空气流速的影响,纵向和横向类型。结果表明:纵向连续顶板通风口开口的流量具有对称性,即当一个开口与内部空气最大出风口相对时,与主导风向相反的开口成为外部空气的入口点。横向连续屋顶通风口对风向更加敏感,因为它们垂直于建筑。最好的结果是在与棚子平行的情况下,内部温度降低了1°C,内部环境中每小时换气速度增加了1英里/小时,进入棚子的空气量增加了10.7%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Naturally ventilated industrial sheds: an investigation about the influence of wind direction in flow rate efficiency in continuous roof vents
Natural ventilation portrays an effective technique for lowering the internal temperature, without spending electricity, and directly contributes to the renewal of indoor air by establishing a healthy environment for workers. Given this, it is usual to have air vent openings located at the top of the roof (continuous roof vents), in addition to those present on the facades of sheds. In naturally ventilated buildings, it is recommended to give due importance to the provision of these openings, since depending on the proposed arrangement, the wind may or may not help in the effectiveness of this strategy. In this work, it is evaluated via computer simulation (EnergyPlus, version 8.7.0), for the climatic conditions of the city of Belo Horizonte/Brazil, the influence of the wind direction in the flow rate of indoor air through the ridge vents, of the longitudinal and transversal type, present in industrial sheds endowed with an internal source of high-intensity heat release. The results obtained show that the flow rate has a symmetrical behavior in the openings of the longitudinal continuous roof vent, that is, when an opening is with the maximum outflow of the internal air, the opening opposite the predominant wind direction is acting as an entry point for the air external. The transverse continuous roof vents are more sensitive about the wind direction since they are positioned perpendicular to the building. The best result found is for the wind situation occurring parallel to the shed, obtaining a reduction in the internal temperature of up to 1°C, an increase in the rate of air changes per hour, in the internal environment, at 1acph, and an increase of up to 10,7% in the volume of air infiltrated into the shed.
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来源期刊
CiteScore
0.70
自引率
0.00%
发文量
26
审稿时长
6 months
期刊介绍: International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish, Portuguese and English. The scope of the journal includes mathematical and numerical models of engineering problems, development and application of numerical methods, advances in software, computer design innovations, educational aspects of numerical methods, etc. RIMNI is an essential source of information for scientifics and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinar exchange and thus shortens the distance between theoretical developments and practical applications.
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