共查询到16条相似文献，搜索用时 156 毫秒
1.
中国某传统民居天井对夏季室内环境的影响(英文) 总被引：2，自引：0，他引：2
针对传统民居中天井对夏季室内环境的影响,在2007年夏季对湖南张谷英村的传统民居建筑群进行了连续监测.监测项目包括室内外气温、室内外照度以及室内外风速,检测时间从8月5日至10日.结果显示:天井气温低于室外气温高于室内气温,表明天井作为"气候缓冲空间"能降低外界对室内热环境的影响;天井照度低于室外高于室内,表明天井能改善室内光环境.但是室内照度低于国家标准,说明改善效果极其有限,也表明遮阳设计依然是当地气候条件下的首要考虑因素;天井风速稳定且与堂屋风速接近,说明天井能促进夏季由水平风压引起的自然通风,但其烟囱效应并不明显. 相似文献
2.
3.
夏热冬冷地区夏季闷热,冬季阴冷,居民冬夏两季对室内的通风换气均有较高的需求.以夏热冬冷地区采暖居住建筑为研究对象,针对室内不同功能空间的自然通风方式进行了优化设计,做到保证夏季良好通风效果的前提下,同时协调冬季室内空气品质与采暖能耗的矛盾,提出了兼顾该地区冬夏两季室内风环境需求的自然通风设计策略. 相似文献
4.
文章选取湖南岳阳郭镇乡民居为研究对象,对是否采用了低碳建筑技术的两种民居,分别进行冬、夏季热环境测试和能耗分析,并采用计算机软件对室内物理环境进行模拟分析。结果表明,采用了低碳建筑技术的住宅,在隔热保温、保湿和自然通风、采光方面都具有明显的优势,节能减排效果好。 相似文献
5.
采用DeST-h软件分析了伊朗马什哈德地区居住建筑PVC板对建筑冷负荷的影响,并利用计算流体力学软件模拟分析了夏季建筑室内的自然通风情况,以确定室内风速.建筑室内风速的模拟结果表明,室内大部分区域是舒适的.在天花板和PVC板之间有无空气层存在的情况下,建筑顶层房间冷负荷分别减少10.5%和6.5%,说明空气层的存在有利于建筑降低冷负荷.然而,空气层厚度的增加对建筑冷负荷降低的影响并不明显.这种在天花板和PVC板之间增加空气层的策略对发展可持续性建筑十分有益. 相似文献
6.
《浙江大学学报(A卷英文版)》2017,(9)
目的:风环境直接影响居住建筑室内外自然通风、舒适度以及污染物扩散情况。本文以居住建筑选址分析为目的,建立一系列针对东亚沿海岙型地形的风环境评价方法,分析影响风环境特点的主要因素,提出风适宜度评价模型,探讨风环境与主要地形因子之间的相关性。创新点:1.建立东亚沿海典型岙型地形的分类数据库;2.提出基于选址分析的风适宜度模型;3.建立风适宜度与地形因子之间的回归模型。方法:1.通过CFD模拟的方法,计算典型工况下20种岙型地形的风场(图5);2.通过理论分析和数理耦合的方法,构建风适宜度模型(公式(4));3.通过Logistic回归方法,分析风适宜度与地形因子的相关性。结论:1.风适宜度直接受地形特征影响,开口面向来风向的岙型地形中风适宜度平均值最高,选址过程中应避开开口背向来风向的岙型地形;2.通过多元回归分析得出风适宜度和地形因子的相关性显著,其中海拔是决定风适宜度的主要地形因子。 相似文献
7.
茂名地区住宅建筑通风节能设计方法研究 总被引：1，自引：0，他引：1
茂名市属于夏热冬暖地区,在这一地区自然通风对改善住宅建筑室内热环境方面具有至关重要和不可替代的作用。通过对建筑中自然通风对建筑的作用及效果的分析,阐述了本地区在住宅建筑设计中自然通风的设计作用和方法。 相似文献
8.
9.
《赤峰学院学报(自然科学版)》2017,(18)
在当前我国提出可持续发展战略的背景下,建筑行业中提出了一种全新的理念即建设"绿色住宅".而为了能够有效减少能源的消耗,提升人们的居住舒适程度,在许多住宅建筑当中都选择使用了自然通风的方式,其在改善室内热环境方面更是具有无可比拟的优势作用.基于此,本文将从简单介绍自然通风改善室内热环境的机理入手,结合实际住宅建筑并进行相关实验,以探究住宅建筑自然通风对室内热环境的具体影响. 相似文献
10.
以刚察扎苏合10 MW光伏发电工程为例,采用湍流k-ε模型对光伏发电站的风场风速和风压分布进行了分析研究。结果表明:由于光伏电站中支架结构高度较低,风速较小,计算得到的风压比按"建筑结构荷载规范"计算得到的风荷载设计值小得多;整个光伏电站中间区域的电池板的压力均远小于外围电池板所受的风压。提出按风压分布,将整个光伏电站分区域对太阳能电池板支架结构及基础形式进行设计,能够有效降低部分支架自重,从而达到节约成本的效果;在得到电站所在地区的全年风向及风速分布数据后,可根据真实情况对电站及其周围风场分布进行模拟,考虑风场、电池板、支架及基础的整体作用,优化支架及基础的结构,为光伏发电工程的经济、安全、可靠性提供保障。 相似文献
11.
The effect of wind environment is becoming increasingly important in analyzing and selecting sites for better natural ventilation of residential buildings, external comfort, and pollution dispersion. The main purpose of this study was to develop a set of methods for wind environment assessment in coastal concave terrains. This set of methods can be used to provide quantifiable indicators of preferable wind conditions and help site analysis. Firstly, a total of 20 types of coastal bays with concave terrains in East Asia were characterized to find ideal locations. The selected areas were divided into five categories according to the main terrain features. Then a sample database for the concave terrains was compiled for modelling comparisons. Secondly, a number of key wind variables were identified. Computational fluid dynamics (CFD) models of the typical coastal concave terrains identified as a result of the study were created, and the local wind environments were simulated with input from geographic information system (GIS) and statistic package for social science (SPSS) analysis. A measure of wind suitability was proposed that takes wind velocity and wind direction into account using GIS. Finally, SPSS was used to find the relationship between wind suitability and key terrain factors. The results showed that wind suitability was significantly associated with terrain factors, especially altitude. The results suggest that residential building sites should be selected such that their bay openings face the direction of the prevailing wind and that the opposite direction should be avoided. 相似文献
12.
This paper presents the simulation results of the wind environment around a single high-rise building and that around two tall buildings in tandem arrangement by using the lattice Boltzmann method with an aim to understand the ventilation issues around high-rise buildings in an urban environment. We analyzed the velocity distribution around the buildings and performed numericl simulations to reveal the formation and evolution law of the complex vortex system around the high-rise buildings. Numerical simulation results manifest a periodicity phenamenon in the process of the vortex evolution. For the case of two high-rise buildings, wind velocity in the space between the two buildings is very small, which is nearly a silent regime. Wind velocity above the front building is relatively larger and the maximum wind velocity is approximately 2.5 times the incoming wind velocity. The numerical results can be used in layout planning of high-rise residential buildings to create better environment for ventilation purpose in an urban area. 相似文献
13.
INTRODUCTION The use of plastic greenhouses is rapidly ex-panding in China with multi-span greenhouses being the most common type. For all these greenhouses, ventilation performance is a major factor in produc-tion, influencing both climatic control and yield quality over much of the year. Natural ventilation uses very little external energy as compared with forced ventilation, but it increases the complexity ofgreenhouse structures and makes climate control more difficult. Natural venti… 相似文献
14.
* Due to snow accumulation and ice formation onhighways, traffic accidents happen frequently in win-ter, causing great losses of economy and lives. Soroad snowremoval has been given great concern[1]. Geothermal road snow-melting system (GRSS)with solar energy storage is an effective, non-pollutionapplied sustainable energy technology developed in re-cent years. Its prominent advantage is to realize sea-sonal thermal storage and improve energy efficien-cy[2]. In Sapporo of Japan, a GRSS sys… 相似文献
15.
The construction of a building may change the microclimate in the vicinity, and planning indicators in a master plan may directly affect the outdoor physical environmental quality in residential areas. An inappropriate plan for a site may accelerate wind and intensify vortexes over places on the pedestrian levels, which leads to an adverse outdoor environment. Therefore, the design of a cluster of buildings should not focus only on the buildings but also provide a good outdoor environment around the buildings. To tackle the problem of inadequate wind environment, the relationship between the building’s floor area ratio and height was identified in this study as the main planning indicator to be examined on its effects on the outdoor wind environment. A computational fluid dynamics (CFD) model was hence developed to simulate the wind conditions generated by some typical site layouts with different values for planning indicators under relevant weather conditions, which were typical of those in Hangzhou, China. The simulated wind conditions are assessed using the wind speed ratio over the whole area of the building cluster at the pedestrian level. The effects on the local wind condition due to the varying of the planning indicators are discussed whilst considering the potential construction costs. The indicators resulting in better external conditions are highlighted in the conclusion as the recommendation which could be used as a rule of thumb by architects and planners at the master planning stage. The study disproves the common belief in the practice that a lower floor area ratio means fewer buildings and therefore greater external comfort. In fact, the higher the building, the greater the outdoor comfort wind zone for pedestrians. However, the increment in comfort area is limited to buildings extending from 25 to 30 levels. 相似文献
16.
连云港市空气质量的主要特征：冬春两季污染明显高于夏、秋两季，海州工业区比市区污染严重，港区污染最轻，日均值呈曲线变化。影响空气质量的主要因素分为气象因素和污染源的排放因素，具体体现为：大气扩散条件的日变化影响，地面风速的影响，地面风向、降水的影响，工业源、流动源的排放影响，扬尘及外来因素的影响。 相似文献