Energy-saving Planning and Design of Urban Residential Buildings in Hanzhong Area

Energy-saving design of residential building is an important part of energy-saving architectural design. Planning and design of residential buildings in Hanzhong area should pay more attention to the building orientation, sunshine, summer ventilation and wind resistance in winter and so on, so as to create favorable conditions for energy-saving design of single buildings. The geographical location, climatic characteristics, residents living habits and indoor and outdoor thermal environment situation were analyzed in this paper, and combined with the existing problems of energy conservation in the planning and layout of residential buildings in Hanzhong area. Based on the investigation, this paper drew some conclusions to provide references for the energy-saving planning and design of urban residential buildings in the local area.

Discussion on the application of the concept of environmental protection and energy saving in the design of building water supply and drainage

With the current,our country social economy rapid development,people's living standard and quality of life and therefore have got improved,at the same time,it is the concept of environmental protection and energy saving is also enhanced value,many fields in our country environmental protection and energysaving concept can be seen in the application,especially the application in building water supply and drainage design more widely,to protect the environment,to maximize the use of limited resources,how to reasonable use of water resources in building water supply and drainage construction,above is current the paper mainly discusses the problems in the construction field,this paper based on environmental protection and energy-saving concept,discusses its application in the building water supply and drainage design,for your reference.

Indicator system of energy efficient technologies evaluation of residential buildings in hot summer and cold winter regions of China

The related existing energy saving index system of buildings is deficient in direction, index coverage, depth, and technological and economic considerations. Aiming at the deficient existing research and with the advancement of energy saving of buildings in China from northern heating regions to southern hot summer and cold winter regions, selecting residential buildings in hot summer and cold winter regions as the research object, and through much evaluation index reference and repeated demonstrations and the borrowing of literature research home and abroad and relevant energy saving standards, filters and eliminates energy efficient technologies evaluation indexes according to the design principle of index system, the factors influencing the energy saving of residential buildings are evaluated, index system weight is established by adopting analytic hierarchy process, and finally the evaluation index system of energy saving technologies of residential buildings in hot summer and cold winter area of China is established. Each target layer includes five standard layer indexes and sixteen index layer indexes. The standard layer of evaluation index, namely primary indexes, includes the technological, energy saving effect, economic, environmental, and social indexes. The secondary indexes are selected based on the principles of concision, comprehensiveness, representativeness and operability.

Research and Application of Complete Set Technology of Green and Energy Saving Assembly Building

According to the survey,environmental pollution is serious in China.Air pollution and water pollution are all serious.Therefore,the state pays more and more attention to green environmental protection.The building design is a creative activity in all kinds of energy decreasing,green energy-saving concept becomes an important content of architectural design engineering,green energy-saving design technology with architectural style is the inevitable trend of the development of our country,but also people focus on the problem.This paper analyzes the green energy-saving assembly building,studies the characteristics of the green energy-saving assembly building,and makes a systematic analysis of the green energy-saving assembly technology.

A cost effective approach to design of energy efficient residential buildings

The objective of this study is to identify cost-optimal efficiency packages at several levels of building energy savings.A two-story residential building located in Jordan is selected as a case study.DesignBuilder software is used to predict the annual energy usage of a twostory residence in Irbid,Jordan.Real-time experimental data from a single isolated controlled room was used to verify the proposed model.In addition to energy analysis,the economic,environmental,and social benefits of the proposed design have been investigated.The sequential search optimization approach is used to estimate the minimum cost of the building while considering various design scenarios.In addition,the impact of various energy conservation techniques on residential buildings is assessed,and the payback period for each program is calculated.Ultimately,the optimal combination of design to achieve energy efficiency measures has been identified in several climate regions.The simulations results predict that the annual electricity consumption can be reduced up to 50%if the proper combinations of energy conservation measures are selected at the lowest cost.The payback period is 9.3 years.Finally,energy efficiency measures can lead to a total of 9470 jobs/year job opportunities.The study provide practical framework to link between energy performance criteria and economic goals of building.Linking the energy performance requirements to economic targets provides guidelines for homeowners,contractors,and policymakers for making a suitable decision regarding the retrofitting of existing residential buildings.The study focuses on developing new methodologies that support minimizing costs during a building’s lifecycle while maximizing environmental benefits which can not be identified by a series of parametric analyses using individual energy-efficient measures.

Deep learning for estimating energy savings of early-stage facade design decisions

The selection of high-performance building facade systems is essential to promote building energy efficiency.However,this selection is highly dependent on early-stage design decisions,which are extremely challenging considering numerous design parameters with early-stage uncertainties.This paper aims to evaluate the appli-cability of deep learning networks in estimating the energy savings of different facade alternatives in the early-stage design of buildings.The energy performance of two competing façade systems(i.e.,Ultra-High-Performance Fiber-Reinforced-Concrete and conventional panels)was estimated for different scenarios through building en-ergy simulations using EnergyPlusTM.Three deep learning networks were trained using the collected data from the simulation of fourteen buildings in fourteen different locations to estimate the heating,cooling,and total site energy savings.The accuracy of trained deep networks was compared with the accuracy of three common data-driven prediction models including,Gradient Boosting Machines,Random Forest,and Generalized Linear Regression.The results showed that the deep learning network trained to predict building total site energy savings had the highest accuracy among other models with a mean absolute error of 1.59 and a root mean square error of 3.48,followed by Gradient Boosting Machines,Random Forest,and last Generalized Linear Regression.Similarly,deep networks trained to predict building cooling and heating energy savings had the lowest mean average error of 0.20 and 1.17,respectively,compared to other predictive models.It is expected the decision support system developed based on this methodology helps architects and designers to quantify the energy savings of different facade systems in early stages of design decisions.

Low Carbon Building Design Optimization Based on Intelligent Energy Management System

The construction of relevant standards for building carbon emission assessment in China has just started,and the quantitative analysis method and evaluation system are still imperfect,which hinders the development of low-carbon building design.Therefore,the use of intelligent energy management system is very necessary.The purpose of this paper is to explore the design optimization of low-carbon buildings based on intelligent energy management systems.Based on the proposed quantitative method of building carbon emission,this paper establishes the quota theoretical system of building carbon emission analysis,and develops the quota based carbon emission calculation software.Smart energy management system is a low-carbon energy-saving system based on the reference of large-scale building energy-saving system and combined with energy consumption.It provides a fast and effective calculation tool for the quantitative evaluation of carbon emission of construction projects,so as to realize the carbon emission control and optimization in the early stage of architectural design and construction.On this basis,the evaluation,analysis and calculation method of building structure based on carbon reduction target is proposed,combined with the carbon emission quota management standard proposed in this paper.Taking small high-rise residential buildings as an example,this paper compares and analyzes different building structural systems from the perspectives of structural performance,economy and carbon emission level.It provides a reference for the design and evaluation of low-carbon building structures.The smart energy management system collects user energy use parameters.It uses time period and time sequence to obtain a large amount of data for analysis and integration,which provides users with intuitive energy consumption data.Compared with the traditional architectural design method,the industrialized construction method can save 589.22 megajoules(MJ)per square meter.Based on 29270 megajoules(MJ)per ton of standard coal,the construction area of the case is about 8000 m2,and the energy saving of residential buildings is 161.04 tons of standard coal.This research is of great significance in reducing the carbon emission intensity of buildings.

An Innovative Architectural Strategy for the Integration of Energy Issues into the Design Process of a Commercial Center in Switzerland

In a context of growing efforts to develop sustainability strategies, energy-related issues occupy central stage in the built environment. Thus, the energy performance of housings has improved radically over the past decades. Yet other types of buildings, in particular commercial centers, haven’t received the same level of interest. As a result, there is a need for effective and practical measures to decrease their energy consumption, both for heating and electricity. The objective of the paper is to demonstrate that it is possible, through coherent strategies, to integrate energy issues and bioclimatic principles into the design process of commercial centers. It analyzes the exemplary case study of Marin Commercial Center (Switzerland). The interdisciplinary approach, based on integrated design strategies, aimed at increasing the energy efficiency while keeping the cost comparable to the market cost. The main design principles include natural ventilation, nighttime cooling with energy recovery and natural lighting, as well as optimization of mechanical systems. The results of the simulations show that Marin Center attains the best energy performance observed so far among Swiss commercial centers. It also meets the Swiss Minergie standard. The paper thus questions traditional design processes and outlines the need for interdisciplinary evaluation and monitoring approaches tailored for commercial centers. Even though most crucial decisions are taken during the early stages, all phases of the process require systematic optimization strategies, especially operating stages. Recommendations include legal measures, in particular in the fields of ventilation and air-conditioning, education, professional development and technology transfer, and financial incentives for the replacement of energy intensive installations.

基于DesignBuilder的长春地区居住建筑能耗主要影响因素研究

长春市属于严寒B区,居住建筑冬季采暖需求大、能耗效率低,为了推广应用被动式超低能耗居住建筑,利用建筑能耗模拟软件DesignBuilder建立模型,并模拟建筑朝向、屋面传热系数和不同种类外保温材料等条件,对该建筑节能性能进行研究.结果表明:被动式超低能耗居住建筑最佳朝向为南偏西3~6℃;屋面传热系数的降低对空调能耗的影响要比对全年总负荷的影响更大;对比分析4种保温材料,发现聚氨酯板在夏、冬季均具有很好的保温效果.研究成果为长春地区居住建筑的建设与发展提供一定参考.

Discussion on Electrical Design of Passive Residential Building

As the national buildings in each climate zone and passive low energy consumption building demonstration projects expand,there has been a wave of innovation across the construction industry.China is also becoming a hot zone for energy-efficient and high-performance passive buildings.Along with the traditional passive building structure,steel structure passive construction,assembled PC structure passive construction such as the emergence of various types of passive construction,as well as a variety of new building materials,doors and Windows,and air conditioning air equipment,put forward a new challenge for building electrical engineering design personnel and requirements.

建筑空间最优节能设计模型仿真研究

由于建筑结构主体较多,空间能耗难以合并控制,导致目前建筑空间能源耗用量较大。为此,构建基于等效转换法的建筑空间最优节能模型,并对其仿真研究。提出建筑总体能耗作为初始优化的“尺度”概念,该尺度为建筑空间的外墙、内墙、屋顶、分户楼板以及门窗等参数,求解这些尺度的最佳标准值。采用等效转换法计算在节能条件下所能接受的最大能耗范围。在此基础上,以上述范围值为约束条件,建立控制函数。将上述提到标准尺度值和最大能耗范围设置为最优解,建立最优节能设计模型,设定温差调节因子,对每一次室内外温差实施有效调节控制,保证建筑体参数符合最佳能耗范围。仿真结果证明,所提方法对冬季采暖和夏季制冷的能耗控制效果均较佳,节能效果最优且算法收敛性高,鲁棒性较好。

江西天井式民居生态适宜性探究

江西地区传统天井式民居具有良好的生态适宜性,在漫长的岁月中形成一套人与自然相和谐的共处模式。文章选取典型案例进行实地测绘、建模,借助Ecotect、Phoenics以及Energy Plus软件进行模拟分析,比较天井式民居与现代民居的光环境、风环境及能耗,验证天井式民居宜居性特征,分析天井式民居生态适宜性的优势与短板,并提出提高现代乡土民居生态适宜性的设计策略,以期为现代建筑的被动式节能技术提供优化思路。

冰上运动建筑曲面光伏参数化集成设计研究

2022年冬奥会成功举办,国内掀起了冰上体育运动的热潮,冰上运动建筑需求量和能源消耗量随之增长。光伏建筑一体化(Building Integrated Photovoltaic,BIPV)作为建筑节能的主要手段之一,在体育建筑屋面具有较大的集成潜力。通过建立寒冷地区曲面冰上运动建筑典型模型进行集成设计研究,基于Grasshopper参数化平台实现新型柔性CIGS薄膜光伏组件沿屋面曲线形态的优化布置,从两个层级出发,提出参数化设计方法与构造措施。通过Honeybee进行能耗模拟,结果表明,该柔性光伏系统全年可以为冰上运动建筑降低15.82%的能量消耗,进而验证了该方案的节能性,为建筑师进行寒冷地区曲面冰上运动建筑设计的节能优化设计提供数据支撑及科学依据。

外窗节能设计与集成技术

建筑外窗作为建筑围护构件中最不节能的部件,包括传热系数(U值)、可见光透射率(T_(vis))、太阳热增益系数(S_(HGC))等在内的光热性能指标直接影响了建筑的能耗。为了更加全面地了解建筑外窗节能设计的关键技术,通过数据库资料详细梳理了前人的相关研究成果。研究发现:窗墙比、建筑遮阳、窗框、窗玻璃、气密性等是影响建筑外窗节能的关键要素;集成技术在外窗节能设计方面具有明显的优越性,能够极大提高外窗的节能效率;人的行为方式对外窗节能效率也会产生较大的影响。

基于节能潜力的办公建筑外窗设计优化策略——以郑州市主城区为例

通过分析建筑设计环节与节能之间的关系,提出了基于节能潜力的办公建筑外窗设计优化策略。基于Grasshopper参数化平台,以郑州市主城区多层办公建筑为例构建典型模型,对外窗设计尺度参数、外窗设计性能参数、遮阳设计参数等3个层级和11个影响建筑能耗的设计参量进行能耗模拟和量化分析。结果表明:在3个层级中,外窗设计尺度参数的全年单位面积总能耗节能潜力最大;在11个设计参量中,窗墙比的全年单位面积总能耗和制冷能耗节能潜力最大,玻璃传热系数的全年单位面积采暖能耗节能潜力最大。因此,在设计郑州市主城区办公建筑的外窗时,建议优先考虑窗墙比,其次是窗口中心线和玻璃材质。

岭南乡土建筑可持续被动式节能设计策略

基于我国碳达峰与碳中和的目标以及我国建筑业的现状问题,岭南乡土建筑可持续被动式节能设计迫在眉睫。以田野调查法和案例分析法为主,定性分析法和文献研究法为辅,从建筑选址、建筑总体布局采取多种措施进行建筑外部环境生态节能规划设计,采取多种措施进行建筑的平面、屋顶、墙体以及门窗的节能设计从而实现建筑自身被动式生态节能,采取多种措施实现建筑遮阳与采光的被动式节能设计。通过以上多种设计策略最终实现建筑可持续被动式节能,将有效改善建筑的通风、采光、隔热效果,大大降低建筑能耗,促进全国碳排放的降低,有利于我国碳达峰与碳中和宏伟目标的实现。

居住建筑夏季行为节能计算模型研究

建筑节能是实现能源消耗降低的重要途径。其中,住宅领域的能耗削减,尤其需要对居民行为节能的可能性进行深入探讨。通过问卷调查方式收集数据,以了解不同地域间节能行为的差异,进而分析行为节能的多种模式。这些模式主要包括与设备使用直接相关的行为,以及不涉及设备使用的其他行为。在夏热冬暖及夏热冬冷地区,对设备使用行为开展了特别的实地测试,并据此建立了相应的节能行为模型。在台州和广州两地,采集了居民实际使用空调的数据,并将其应用于行为模型中,形成基于概率函数的模型。测试结果显示,广州地区空调启动的温度临界点为29.8℃,而台州地区空调启动的温度临界点为28.8℃。建立行为模型不仅能够提高能耗模拟的精确度,而且可为热工设计提供科学依据,有助于推动建筑节能技术的实际应用。