共查询到19条相似文献,搜索用时 116 毫秒
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采用美国大型能耗模拟软件,对南方地区居住建筑能耗进行了分析计算,得出采取不同建筑节能技术后建筑的节能效果,对建筑节能设计具有一定的参考意义。 相似文献
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深圳市居住建筑多为点式高层建筑 ,外观造型多变 ,户型以4房2厅2卫和5房2厅2卫居多。通常外墙的传热系数为2.9W/(m2·K)左右 ,外窗的传热系数为5.9W/(m2·K)左右 ,屋面为0.9W/(m2·K)左右。外围护结构节能有很大潜力可挖。1深圳市居住建筑室内热环境质量建议指标在调查研究的基础上 ,深圳市热环境质量建议指标值见表1。指标分为综合性指标和主要指标两类。以PMV值为综合性指标 ,室内干球温度为主要指标。2深圳市典型居住建筑模型根据对从深圳市近十年来的明星楼盘、热销楼盘、专家看好楼盘、获奖… 相似文献
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对于当前社会经济高速发展的今天,实施居住建筑节能设计,可以降低全球能源消耗量,也可优化居住建筑环境,具有实际的应用意义。本文就对居住建筑能耗特征和节能设计加以分析。 相似文献
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前言随着我国国民经济迅速发展和城乡居民生活水平的不断提高,政府和城乡居民对环境保护、节约能源、改善居住条件等问题极为重视,我国城市集中供热,区域联合供热和小区锅炉供热正在逐渐扩大,火炉供暖的比例正在逐步缩小,但就总体来看,热效率低.供热成本高的供热方式,目前仍占主导地位,我国供暖居住建筑围护结构保温水平低,热环境质量差,供暖能耗大的状况仍然普遍存在。供暖居住建筑节能包括诸多方面,片面地注重供暖系统的节能设计而忽视建筑物结构的节能设计,往往达不到节能的目的,同样,一栋节能的建筑物而没有一个设计合理… 相似文献
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本文基于福建近年新建住宅的调查调查结果,提取了1梯2户住宅的模式;根据这种模式和现有节能标准,构建了2单元6层住宅,并用软件模拟分析了其在福建典型气候区适时通风与非适时通风的能耗状况。模拟分析表明:(1)无论气候区如何,通风是否适时,住宅南北向布置时能耗最小,而东西向布置时能耗最大;(2)适时通风的节能效果与地区气候有... 相似文献
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本文以广州市某城区居住建筑2011年电能消耗情况为对象,统计了478栋居住建筑电能消耗状况,结果表明,居住建筑平均电能消耗量为45.85kWh/(m2年),夏季高峰时段耗电量是春季低谷时段耗电量的2.13倍,夏季高峰时段空调器耗电量约占建筑总耗电量的53%.该地区居住建筑可通过建造节能型建筑、引导居民使用高效空调设备、加强建筑节能专业知识普及,引导居民合理用能等途径降低居住建筑能耗特别是空调设备的耗电量. 相似文献
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以某卷烟企业为例,根据其建筑能耗较大的特点,通过采用增强围护结构保温性能、降低照明功率密度、提高锅炉热效率、提高冷水机组能效比、增设外遮阳系统、冬季冷却塔供冷、冷冻泵变频调节、余热回收利用、太阳能光热利用等节能措施,利用全年逐时能耗模拟+定量分析的方法,针对每一项节能方案,用能耗模拟软件进行模拟,得到每种节能方案的分项节能率。折成综合节能率约为13.63%,每年可减少CO2排放量约1338.6吨,减少碳粉尘排放量约365吨,减少SO2排放量约40吨、NOX约20吨。 相似文献
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北京市建筑用能现状与节能途径分析 总被引:30,自引:3,他引:30
介绍了北京市现有各类建筑的情况,在现场实测和统计调查的基础上分析了北京市民用建筑的用能情况,讨论了住宅、普通公共建筑和大型公共建筑开展节能工作的障碍,给出了解决途径。 相似文献
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《Energy and Buildings》2002,34(7):727-736
A neural network approach is used in the present study for modelling and estimating the energy consumption time series for a residential building in Athens, using as inputs several climatic parameters.The hourly values of the energy consumption, for heating and cooling the building, are estimated for several years using feed forward backpropagation neural networks. Various neural network architectures are designed and trained for the output estimation, which is the building’s energy consumption. The results are tested with extensive sets of non-training measurements and it is found that they correspond well with the actual values.Furthermore, “multi-lag” output predictions of ambient air temperature and total solar radiation are used as inputs to the neural network models for modelling and predicting the future values of energy consumption with sufficient accuracy. 相似文献
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《Journal of Building Performance Simulation》2013,6(6):391-407
Today, many large commercial buildings use building automation systems to manage a wide range of equipment. This paper investigates the energy savings potential of several common heating, ventilation, and air conditioning (HVAC) system re-tuning measures on a typical large office building using the EnergyPlus software. Individual re-tuning measures simulated include automatic schedule adjustments, damper minimum flow adjustments, thermostat adjustments, as well as dynamic resets to static pressure, supply-air temperature, condenser chilled- and hot-water temperatures, and chilled and hot water differential pressure set points. All individual measures and combinations were simulated in 16 locations representative of different climates in the USA. Many of the demand-side individual measures were capable of reducing annual HVAC energy consumption by over 20% in most cities. Supply-side measures affecting HVAC plant conditions were only modestly successful (less than 5% annual HVAC energy savings). Some of the combinations revealed between 35% and 75% HVAC energy savings. 相似文献
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This paper identifies the impact of thermostat strategies on heating and cooling energy consumptions in buildings, thus suggesting the importance of a database for understanding the effect of thermostat settings and for deciding energy-conscious strategies.Using computer simulation, diverse thermostat strategies – change of setback period, change of set-point temperature, and change of setback temperature – were tested parametrically in a typical USA single-family homes, located in two climate zones, namely cold (Detroit, Michigan) and hot-humid (Miami, Florida).Analysis revealed that heating and cooling systems were significant energy-consuming components in each climate zone. Accordingly, heating energy in cold climate zones and cooling energy in hot-humid climate zones have potential for matchingly significant saving. Diverse thermostat strategies (changes of setback period, of set-point, of setback temperature) demonstrated their obvious impacts on such saving. In the cold climate in particular, the heating system showed the most significant energy-saving effect via proper thermostat strategies. Proper setback period, set-point and setback temperature need to be established to achieve energy efficiency in residential buildings. 相似文献
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单体住宅建筑围护结构供暖能耗分析 总被引:6,自引:0,他引:6
对不同朝向、外形和围护结构传热系数的6种典型住宅建筑物的热特性进行逐时模拟计算,概括了描述建筑物及其内部户型的指标和参数。计算表明,建筑物或户型的供暖指标与其平均传热系数和体形系数的乘积成正比。认为根据建筑物不同朝向和房间所处位置接受的太阳辐射热及外围护结构情况,可以判断房间的供暖指标。 相似文献