Vacuum insulation panels (VIPS) in building envelope constructions: An overview

2016 ◽  
Vol 7 (2) ◽  
pp. 113-119 ◽  
Author(s):  
K. Song ◽  
P. Mukhopadhyaya
Keyword(s):  
Green Building ◽  
Building Energy ◽  
Building Envelope ◽  
Sustainable Building ◽  
Building Product ◽  
Vacuum Insulation ◽  
Vacuum Technology ◽  
Net Zero ◽  
The World ◽  
Energy Codes

Driven by updated building energy codes and green building initiatives across the world, vacuum insulation panel, also known as VIP, has become a desired insulation product for building envelope constructions. VIP has initial center-of-panel thermal conductivity of 0.004 W/mK or lower, and integration of VIP in building envelopes can reduce CO2 emissions and contribute towards ‘net-zero’ or ‘near-net-zero’ building constructions. Although VIPs have been applied in real-world constructions across the world, primarily in Asia, Europe and North America, it is still a novel building product under investigation. This overview paper is a summary of fundamentals, constituents, constructions and performances of VIPs. The paper shows there exists many advantages and challenges associated with the integration of VIPs in building envelope constructions. The speed at which VIPs will be integrated in building envelope construction in the coming years remains unclear; nevertheless, it is evident that vacuum technology is the promising way forward for sustainable building envelope constructions in the 21st century.

scholarly journals BIM-VE-Based Optimization of Green Building Envelope from the Perspective of both Energy Saving and Life Cycle Cost

2020 ◽  
Vol 12 (19) ◽  
pp. 7862
Author(s):  
Zhenmin Yuan ◽  
Jianliang Zhou ◽  
Yaning Qiao ◽  
Yadi Zhang ◽  
Dandan Liu ◽  
...  
Keyword(s):  
Life Cycle ◽  
Energy Saving ◽  
Life Cycle Cost ◽  
Architectural Design ◽  
Green Building ◽  
Building Energy ◽  
Green Buildings ◽  
Building Envelope ◽  
Analysis Model ◽  
Mathematical Formula

In the context of the increasingly severe energy crisis and global warming, green buildings and their energy-saving issues are being paid more attention in the world. Since envelope optimization can significantly reduce the energy consumption of green buildings, value engineering (VE) technology and building information modeling (BIM) technology are used to optimize the envelope of green buildings, which takes into account both energy saving and life cycle cost. The theoretical framework of optimization for green building envelope based on BIM-VE is proposed, including a BIM model for architecture, a life cycle cost analysis model, energy-saving analysis model, and a value analysis model. In the life-cycle cost model, a mathematical formula for the life-cycle cost is established, and BIM technology is used to generate a bill of quantity. In the energy-saving analysis model, a mathematical formula for energy saving is established, and BIM technology is used for the building energy simulation. In the scheme decision-making sub-model, VE technology integrating life cycle cost with energy saving is used to assess the envelope schemes and select the optimal one. A prefabricated project case is used to simulate and test the established methodology. The important results show that the 16 envelope schemes make the 16 corresponding designed buildings meet the green building evaluation standards, and the optimal envelope scheme is the “energy-saving and anti-theft door + exterior window 2+ floor 1+ exterior wall 1 + inner shear wall + inner partition wall 2 + planted roof” with the value 10.80 × 10−2 MW·h/ten thousand yuan. A significant finding is that the value generally rises with the increase of energy-saving rate while the life cycle cost is irregular with the increase of energy-saving rate. Compared with previous efforts in the literature, this study introduces VE technology into architectural design to further expand the current boundary of building energy-saving theory. The findings and suggestions will provide a valuable reference and guidance for the architectural design industry to optimize the envelope of green buildings from the perspective of both energy saving and life cycle cost.

scholarly journals Dynamic Adaptive Building Envelopes – an Innovative and State-of-The-Art Technology

2016 ◽  
Vol 3 (2) ◽  
pp. 167-183
Author(s):  
Sachin Harry
Keyword(s):  
Research And Development ◽  
Design Research ◽  
Building Energy ◽  
Building Envelope ◽  
Building Energy Efficiency ◽  
Building Envelopes ◽  
Sustainable Building ◽  
Innovative Strategy ◽  
Characteristic Features ◽  
Indoor Comfort

The building envelope has a key role to play in achieving indoor comfort for the occupants and building energy efficiency. A dynamic, active and integrated solution -- able to achieve the optimum thermal performance, harness energy from renewable resources and, integrate active elements and systems -- is the most promising and innovative strategy for the building envelope of tomorrow. To achieve an effective and sustainable building envelope with a dynamic behaviour, considerable efforts in research and development are necessary. This paper endeavours to present a broad review of design, research and development work in the field of Dynamic Adaptive Building Envelope (DABE). Based on detailed studies, the characteristic features, enabling technologies, and the overall motivations that have tendered to the advancement of DABE are discussed. In spite of its positive aspects, the study reveals that the concept of DABE has not yet been well-applied and needs much more exploration. Various challenges need to be resolved and advanced research undertaken to bring it to maturity and acceptance.

Using Vertical Green as Material for Complying Building Energy Code

2012 ◽  
Vol 622-623 ◽  
pp. 1035-1038 ◽  
Author(s):  
Kaweewat Sathien ◽  
Kuaanan Techato ◽  
Juntakan Taweekun
Keyword(s):  
Energy Saving ◽  
Construction Material ◽  
Building Energy ◽  
Building Envelope ◽  
Air Conditioner ◽  
Thermal Transfer ◽  
Plant Utilization ◽  
Energy Codes ◽  
Building Energy Codes

Plant utilization as a part of building envelope has never been introduced in view of the compliance to Building Energy Code or the successful building energy codes or even in view of energy for building labeling. This research tries to find out the approach to utilize the equivalent plant conductivity (ke) in order to make the plant as a construction material for the building envelope. The ke is plugged into the formula of the Overall Thermal Transfer Value to see the energy saving for air-condition from having vertical green. By testing on two rooms with air conditioner, one with vertical green and another is without vertical green, the room with vertical green reduced the Overall Thermal Transfer Value from 59.87 W/m2 to 49.39 W/m2.

scholarly journals The impact of window-to-wall ratio on energy intensity of existing office buildings in Ontario and Quebec

2021 ◽  
Author(s):  
Viktoriya Mykytyak
Keyword(s):  
Energy Intensity ◽  
Building Energy ◽  
Building Envelope ◽  
Office Buildings ◽  
Building Geometry ◽  
Energy Codes ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship ◽  
New Buildings

Energy codes, such as SB-10, provide significant impact on the thermal performance of the building envelope. For design of new buildings, a window-to-wall ratio (WWR) of 40% is considered as a threshold in Ontario for using prescriptive solutions for thermal resistance of the enclosure. This study will demonstrate the relationship of the energy intensity of the existing office building to the WWR, through analysis of 15 office buildings located in Ontario and Quebec. Recent studies indicate that building geometry can influence the energy efficiency of the building; nevertheless, factors that impact energy intensity of existing buildings are not researched in full, and this study’s aim is to minimize the knowledge gap in this field of literature. The outcome of this research shows that WWR directly influences energy intensity of the building. Energy balance calculations and energy loads distribution showed that WWR impacts on average 15% of overall energy consumption

Development of an Integrated Performance Design Platform for Residential Buildings Based on Climate Adaptability

Energies ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 8223
Author(s):  
Zhixing Li ◽  
Mimi Tian ◽  
Yafei Zhao ◽  
Zhao Zhang ◽  
Yuxi Ying
Keyword(s):  
Energy Efficiency ◽  
Life Cycle Cost ◽  
Residential Buildings ◽  
Building Energy ◽  
Building Envelope ◽  
Design Stage ◽  
Design Parameters ◽  
Building Energy Efficiency ◽  
The World ◽  
Integrated Performance

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.

A Comparative Analysis on Materials and Resources in Green Assessment Tools for Various Countries

2016 ◽  
Vol 700 ◽  
pp. 256-265
Author(s):  
Nurul Akmam Naamandadin ◽  
Norhaizura Yahya ◽  
Abdul Razak Sapian
Keyword(s):  
Comparative Analysis ◽  
Building Materials ◽  
Green Building ◽  
Building Energy ◽  
Assessment Tools ◽  
Building Projects ◽  
Sustainable Building ◽  
Building Energy Conservation ◽  
Design Flexibility ◽  
Green Building Materials

The concept of sustainable building incorporates and integrates a variety of strategies during the design, construction and operation of building projects. The use of green building materials and products represents one important strategy in the design of a building. Green building materials offer specific benefits to the building owner and building occupants such as reducing maintenance/replacement costs over the life of the building, energy conservation, improving occupant health and productivity, and greater design flexibility. Thus, the aim of this paper is to identify the similarities and the differences for the selected green assessment tools which can be obtained stage by stage of the RIBA Outline Plan of Work 2013. The study had been carried out through a comparative analysis. The finding is predicted to help the construction industry practitioners to be able to understand the assessment criteria involved at every stages in the construction process concerning on material and recourses. Especially for those who are concerned on green building and to sustain our natural environment.

Green Building Studio Test Result Comparison with Test from ANSI ASHARE Standard 140-2011

2014 ◽  
Vol 1057 ◽  
pp. 11-18 ◽  
Author(s):  
Martin Jamnický
Keyword(s):  
Energy Efficient ◽  
Green Building ◽  
Building Energy ◽  
Building Energy Modeling ◽  
Building Envelopes ◽  
Operational Energy ◽  
Energy Codes ◽  
Energy Efficient Building ◽  
Proven Method ◽  
Test Result

Computer simulation is an important and proven method to help understand and analyze the thermal performance of buildings, and predict their operational energy consumption. Building energy simulation is widely used to help design energy efficient building envelopes and HVAC systems, develop and demonstrate compliance of building energy codes, and implement building energy rating programs. However, large discrepancies exist between simulation results from different building energy modeling programs. This leads many common users lack confidence in the results from building simulation methods.

scholarly journals Evaluating Patterns of Building Envelope Air Leakage with Infrared Thermography

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3545
Author(s):  
Milad Mahmoodzadeh ◽  
Voytek Gretka ◽  
Stephen Wong ◽  
Thomas Froese ◽  
Phalguni Mukhopadhyaya
Keyword(s):  
Infrared Thermography ◽  
Pressure Difference ◽  
Practical Implication ◽  
Cost Savings ◽  
Building Energy ◽  
Building Envelope ◽  
Air Leakage ◽  
Image Subtraction ◽  
Thermographic Image ◽  
Energy Codes

The next-generation performance-based building energy codes are focusing on minimizing building envelope air leakage. The quantification of air leakage in buildings is typically performed with a blower door test. However, this test does not provide information about the locations of air leakage. The aim of this study is to demonstrate a method involving qualitative and quantitative components that can be used to characterize locations of air leakage with infrared thermography. Since air leakage can have a significant impact on building energy consumption in cold climates, like in Canada, this approach can quickly inform where air barrier discontinuities occurred during construction or where to selectively target air sealing efforts in existing buildings. The observations from this study are presented, based on a thermographic image analysis during a depressurized blower door test at various pressures, in an attempt to quantify the relative rates of air leakage. The results from the investigation showed that infrared thermography (IRT) was able to discern locations and infer relative ratios of air leakage. The qualitative analysis showed that areas of air leakage are more evident under higher pressure difference. The quantitative approach showed that a minimum of 25 Pa pressure difference was required to detect the air leakage in the vicinity of the window frame, as the surface temperature decreased rapidly (almost 60% of the indoor surface/outdoor air temperature difference) at this pressure. A temperature index was defined to prioritize the areas of air leakage for retrofitting purposes. Furthermore, a thermal image subtraction method was used to determine the characteristics of the cracks based on thermal patterns. Finally, the practical implication of this study, for building developers, home inspectors, property mangers, and homeowners, is the early detection of air leakage for both existing and newly constructed buildings which could result in energy and cost savings.

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