共查询到19条相似文献,搜索用时 156 毫秒
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通过对重庆地区农村住宅的实地调研和对农村典型住宅室内外温度的连续监测,获得农村住宅的主要围护结构类型及典型农村住宅供暖季与空调季的室内、外热环境状况,利用重庆地区自然通风适应性热舒适性评价模型进行分析。在现有农村住宅围护结构热工性能条件下,供暖季室内温度达到舒适范围的有0 d,空调季有73 d;室内热环境状况差,冬季保温要求比夏季隔热要求更高。在供暖空调设备典型运行模式下,以调研数据为基础,借助DeST-h软件对农村典型住宅供暖空调能耗进行模拟,获得了农村住宅单位建筑面积供暖空调设备耗电量。 相似文献
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住宅非空调工况下的自然通风对室内热湿环境质量有显著影响。结合重庆地区近五年夏季逐时气象参数和民用建筑室内热湿环境评价标准,分析重庆地区居住建筑夏季自然通风的可利用率。并以该地区某一住宅为对象,测试夏季自然通风情况下的不同天气过程的室内外热湿环境参数,采用预计适应性平均热感觉指标(APMV)和预计适应性不满意者的百分数(APPD),在分析门窗开关和房间朝向对热舒适影响基础上,提出重庆地区住宅夏季自然通风运行策略。研究结论可为该地区居住建筑的设计和室内热环境的调控提供参考。 相似文献
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改善重庆住宅热环境质量的研究 总被引:16,自引:2,他引:14
对重庆住宅室内热环境状况进行了调查与实测,建立了室内热环境模拟与评价模型,利用该模型并结合计算机模拟技术,对改善住宅室内热环境的措施进行了系统分析。在此基础上,提出了重庆地区住宅热舒适性指标,为重庆地区住宅节能工作的开展提供了技术支持。 相似文献
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通风降温建筑室内热环境模拟及热舒适研究 总被引:15,自引:0,他引:15
将热舒适评价标准PMV/PPD模型与建筑动态热模拟及计算流体动力学(CFD)模拟相结合,分别对重庆地区自然通风房间和埋管送风通风房间进行了室内气候及热舒适性模拟与分析,结果表明,埋管系统通风降温可以改善炎热地区的室内热舒适性。 相似文献
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本文采用建筑热工模拟软件DeST-h和ePMV热舒适模型研究了自然通风下福州市住宅围护结构性能对室内热舒适性的影响。选择一栋11层高层住宅作为研究对象,计算分析了该建筑标准层7个不同朝向典型房间在自然通风环境下的逐月、全年热舒适状况,全面系统地研究了外墙、外窗、外遮阳、房间朝向等因素对改善自然通风下室内热舒适的效果和相关规律,并提出室内热舒适性改善的措施建议。 相似文献
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基于2 171份来自湖北山区罗田县农宅冬、夏两季室内外热环境和热舒适问卷,真实再现了当地住宅室内冬季寒冷、夏季湿热的恶劣热环境和当地居民强大的热适应能力;并通过比较研究发现现有的自然通风状态热舒适评价模型在夏季能较好地预测当地农民的热舒适感受,而在冬季预测能力较低;当地农宅室内适应性热舒适区间与我国现行设计标准也较为吻合。 相似文献
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Amirreza Khaksar Amir Tabadkani Seyed Majid Mofidi Shemirani Aso Hajirasouli Saeed Banihashemi Shady Attia 《建筑学研究前沿(英文版)》2022,11(6):1214-1238
Vernacular buildings are known for their localized passive settings to provide comfortable indoor environment without air conditioning systems. One alternative is the consistent ground temperature over the year that earth-sheltered envelopes take the benefit; however, ensuring annual indoor comfort might be challenging. Thus, this research monitors the indoor thermal indicators of 22 earth-sheltered buildings in Meymand, Iran with a warm-dry climate. Furthermore, the observations are used to validate the simulation results through two outdoor and indoor environmental parameters, air temperature and relative humidity during the hottest period of the year. Findings indicated that the main thermal comfort differences among case studies were mainly due to their architectural layouts where the associated variables including length, width, height, orientation, window-to-wall ratio, and shading depth were optimized through a linkage between Ladybug-tools and Genetic Algorithm (GA) concerning adaptive thermal comfort model definition and could enhance the annual thermal comfort by 31%. 相似文献
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为考察冬季非空调环境下人体热感觉,对厦门某高校教室的热舒适度进行了现场测试.在测量室内外热舒适参数的同时,通过问卷调查得到了人体热反应样本.分析样本得出厦门高校教室冬季非空调工况下人体热中性温度和热期望温度分别为19.3和19.4℃.综合考虑温度、相对湿度、平均辐射温度、风速及服装热阻对坐姿轻度活动状态人体的热舒适影响,使用MATLAB软件进行非线性回归,得到非空调工况下热舒适预测方程.该预测方程与实测得到的人体热舒适投票两者结果有较高相关度,同时较大程度上反映了冬季非空调环境下人体热感觉的变异. 相似文献
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The equation for thermal comfort for buildings in the free-running mode (Annexe A2) in European Standard EN15251 rests on the data collected in the EU project Smart Controls and Thermal Comfort (SCATs). Many of these data were from naturally ventilated office buildings which were in free-running mode outside the heating season. Using the data from these buildings a relationship between indoor comfort and outdoor climate was developed for free-running buildings. This paper describes the data and the methods of analysis used to estimate the comfort conditions in the variable environment of free-running buildings. The paper also describes how the indoor comfort conditions were related to the running mean of the outdoor temperature, and addresses the effects of air movement and humidity. The paper considers the proportions of people likely to be comfortable if the temperature differs from the neutral temperature. The differences between the adaptive comfort charts in EN15251 and ASHRAE 55-2004 are discussed. 相似文献
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A liquid desiccant based dedicated outdoor air-chilled ceiling (DOAS-CC) system is proposed to serve a multi-zone space. The outdoor airflow rate and the supply air humidity ratio are two crucial variables in such a system, which significantly influence indoor thermal comfort, indoor air quality and energy consumption. Two strategies are presented to optimize these two variables in the study. They are the demand-controlled ventilation (DCV) strategy and the supply air humidity ratio set-point reset strategy. To evaluate the performances of these two strategies, a basic control strategy, i.e., the strategy adopting constant ventilation flow rate and constant supply air humidity ratio, is selected as the benchmark. Performances of the two strategies in terms of indoor air temperature, relative humidity and CO2 concentration as well as energy consumption are analyzed using simulation tests. The results show that the supply air humidity ratio set-point reset strategy is effective for the indoor air humidity control. It can save about 19.4% of total energy consumption during the whole year. The DCV-based ventilation strategy can further reduce about 10.0% of energy consumption. 相似文献
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对青海乡域4所典型中小学校10间教室冬季室内温湿度、风速、黑球温度等热环境参数进行现场测试,同时对420余名青少年学生的衣着情况、热感觉评价等进行了主观问卷调查。对测试和调查结果进行统计分析,得到实测和预测热中性温度分别为13.8和14.5℃,热期望温度为16.2℃,90%的学生感到满意的舒适温度范围为15.8~18.7℃。在当地寒冷的气候条件、学生衣着习惯、心理期望及生理特性等因素影响下,中小学生形成了对偏冷环境的适应性,提出可利用适应性PMV模型(aPMV)对中小学生平均热感觉进行准确预测。可为乡域中小学教室冬季热环境设计提供依据。 相似文献
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随着人们生活水平的不断提高,人们对室内环境舒适度的要求也提出了更高要求,良好的室内热湿环境不仅影响人体健康,同时也能给工作生活带来愉快的心情。此次实验研究,选取三峡大学综合教学楼B区作为实验地点,通过随机对教室内的学生发放调查问卷,综合分析实验结果,研究了空气温湿度对人体热舒适性的影响,分别根据热感觉和热舒适投票值确定了人体热舒适区,研究发现80%满意率的室内温度范围在22~26℃,相对湿度范围在45%~55%,得到的夏季舒适区范围与ASHRAEStanard55-1992相比也略有偏差。 相似文献