A Study on the Building Energy Efficiency Rating Changes by Enhanced Thermal Insulation Performance of Building Envelope Standards in Apartment Houses

Author(s):  
Jun Ho Hong ◽  
Tae Yun Aum ◽  
Jae Chun Lee
2014 ◽  
Vol 899 ◽  
pp. 62-65 ◽  
Author(s):  
Rastislav Ingeli ◽  
Boris Vavrovič ◽  
Miroslav Čekon

Energy demand reduction in buildings is an important measure to achieve climate change mitigation. It is essential to minimize heat losses in designing phase in accordance of building energy efficiency. For building energy efficiency in a mild climate zone, a large part of the heating demand is caused by transmission losses through the building envelope. Building envelopes with high thermal resistance are typical for low-energy buildings in general. In this sense thermal bridges impact increases by using of greater thickness of thermal insulation. This paper is focused on thermal bridges minimizing through typical system details in buildings. The impact of thermal bridges was studied by comparative calculations for a case study of building with different amounts of thermal insulation. The calculated results represent a percentage distribution of heat loss through typical building components in correlation of various thicknesses of their thermal insulations.


2013 ◽  
Vol 395-396 ◽  
pp. 469-472
Author(s):  
Zu Xu Zou ◽  
Song Ping Mao

It is a problem on building energy efficiency of how to improve the heat insulation performance of building envelope, to make the building outer wall has good heat preservation effect, and to keep the necessary seismic performance. Exterior wall thermal insulation engineering, which is a key part on building energy conservation engineering construction quality acceptance and on building energy efficiency design, is an important part in building energy efficiency projects. Therefore, it is necessary to study the seismic performance based on the fact that the building is building energy efficiency. By the research on exterior insulation materials, the analysis on the performance of external thermal insulation materials currently used, and the research on the factors affecting the seismic performance of external thermal insulation material, It provides a guidance on evaluating the external wall thermal insulation material performance and quality, ensuring the quality of external thermal insulation material, and it is expected to achieve the effect of building energy efficiency.


2013 ◽  
Vol 639-640 ◽  
pp. 350-353 ◽  
Author(s):  
Xiao Hong Zheng ◽  
Zhu Li ◽  
Yuan Zhen Liu ◽  
Shang Song Qin

The durability of thermal insulation glazed hollow bead concrete, which is a kind of structure self-thermal insulation material produced in the background of building energy efficiency, has been systematically researched in order to make it with a good workability. Theoretical analysis and experimental study have been made from the raw materials and construction mixing proportion in the basis of the analysis to the influencing factors of its durability so as to can improve its durability.


2013 ◽  
Vol 788 ◽  
pp. 656-659
Author(s):  
Xiao Jie Zhang ◽  
Yuan Ping Liu

Building palisade structure is the most important part of the wall, so the external wall thermal insulation technology has become an important part of building energy efficiency. After the author found the domestic use of insulation materials in a variety of forms, different use method makes the external wall thermal insulation system has a problem. The analysis of the cause of the problem at the same time, this paper discusses how to use of selected materials and improving the construction methods to avoid the happening of the accident.


Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8223
Author(s):  
Zhixing Li ◽  
Mimi Tian ◽  
Yafei Zhao ◽  
Zhao Zhang ◽  
Yuxi Ying

Building energy waste has become one of the major challenges confronting the world today, so specifications and targets for building energy efficiency have been put forward in countries around the world in recent years. The schematic design stage matters a lot for building energy efficiency, while most architects nowadays are less likely to make energy efficiency design decisions in this stage due to the lack of necessary means and methods for analysis. An integrated multi-objective multivariate framework for optimization analysis is proposed for the schematic design stage in the paper. Here, the design parameters of the building morphology and the design parameters of the building envelope are integrated for analysis, and an integrated performance prediction model is established for low-rise and medium-rise residential buildings. Then, a comparison of the performance indicators of low-rise and medium-rise residential buildings under five typical urban climatic conditions is carried out, and the change patterns of the lighting environment, thermal environment, building energy demand, and life cycle cost of residential buildings in each city under different morphological parameters and design parameters of the building envelope are summarized. Specific analysis methods and practical tools are provided in the study for architectural design to ensure thermal comfort, lighting comfort, low energy consumption, and low life-cycle cost requirement, and this design method can inspire and guide the climate adaptation analysis and design process of low-rise and medium-rise residential buildings in China, improve architects’ perception of energy-saving design principles of low-rise and medium-rise residential buildings on the ontological level, as well as provide them with a method to follow and a case to follow in the actual design process.


2010 ◽  
Vol 171-172 ◽  
pp. 441-444
Author(s):  
Wei Cai ◽  
Zhao Hui Wu ◽  
Huang Wang ◽  
Xiao Man Du

Built environment is determined by outside climate condition. There are a lot of important factors that influence building energy consumption such as building shape coefficient, insulation work of building envelope, covered area, and the area ratio of window to wall. In order to determine how building energy efficiency works in different climate zones, the variation rule of some aggregative indicators and building energy efficiency rates were analyzed by dynamic simulation. The results show that energy conservation potential which is brought by the decrease of builidng shape coefficient is the largest in hot summer and cold winter zone such as Shanghai, and the effect is mainly brought by insulation measures added to exterior walls.


2014 ◽  
Vol 525 ◽  
pp. 371-374
Author(s):  
Zhi Neng Tong

Energy efficiency must first be a good envelope, then consider saving technology from the device. From the perspective of building life-cycle perspective, the eco-design of energy-efficient throughout, so that the building has good ventilation and shade integrated structure, building envelope insulation effect good, reasonable equipment systems, these measures will be building energy efficiency has played a active role. According to these principles, the program selection, save energy, to obtain better results.


2013 ◽  
Vol 368-370 ◽  
pp. 1278-1284
Author(s):  
Xue Fang Bao

Building energy efficiency testing is an important way to verify whether buildings have measured up to energy efficiency design criteria. On the basis of current state of energy efficient building and construction in regions that are hot in summer and cold in winter, this paper makes an attempt at the analysis of key factors of residential building energy efficiency tests, and focuses on the technical points of field testing on heat transfer coefficient, thermal bridge, thermal defect of residential building envelope as well as room air tightness.


Author(s):  
Alla Kariuk ◽  
Roman Mishchenko ◽  
Volodymyr Pents ◽  
Vira Shchepak

Complex comparative analysis of building energy performance rates in EU countries and Ukraine has been carried out.The relation between building insulation rates and European countries climate condition has been investigated. It is illustratedthat there is a significant gap between building energy efficiency characteristics in Ukraine and in most of the EU countries.Economically justified rates of building envelope heat exchange resistance which can lead Ukraine to common Europeanlevel based on optimized calculations are suggested. The necessity for further increase in building envelope heat exchange resistancerates in order to raise building energy efficiency and put Ukrainian building regulations in harmony with EU countriescorresponding norms is proved.


2020 ◽  
Vol 14 ◽  

Energy efficiency in buildings is a very important challenge that has to be faced in order to achieve the aims set by the new EU directive on Building energy efficiency encouraging nearly zero energy buildings. Unfortunately in countries with cold climate it is very hard to achieve this goal. The thickness of insulation needed to reach low energy consumption in cold climate is very big and in many cases it is not economically feasible. There is a need for new solutions for increasing building energy efficiency. In this paper a new solution for increasing building energy efficiency is proposed. It is proposed to use the latent energy of water-ice phase change to reduce heat conduction losses through building envelope. The latent energy is recovered by using low potential heat source. In this paper the validity of the proposed new solution is tested on a one dimensional scale – homogeneous infinite wall. The presented methodology is chosen to calculate systems operational efficiency throughout the whole year.


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