A Review of Aerogels and Their Application as a Multi-functional Building Material

2012 ◽  
Vol 253-255 ◽  
pp. 564-567 ◽  
Author(s):  
Zhu Ge Yan
Keyword(s):  
Mechanical Behaviour ◽  
Building Material ◽  
Energy Efficient ◽  
Silica Aerogels ◽  
Material Characterisation ◽  
Energy Efficient Buildings ◽  
Acoustic Insulation ◽  
New Material ◽  
New Type ◽  
Energy Efficient Building

This paper will provide a review of the current research on the material characterisation and mechanical behaviour of polymer enhanced silica aerogels. Aerogels have been in existence for many years; however, the engineering applications of aerogels have been limited due to their poor mechanical behaviour. Recently a new type of polymer enhanced silica aerogel, a nanostructured form of silica has been developed. The new material is having a low density, very low thermal conductivity, excellent acoustic insulation and high mechanical which makes it ideal for energy efficient building material. This paper will discuss the start-of-the-art development of this material and issues to apply the material in energy efficient buildings.

scholarly journals Understanding the Reasons behind the Energy Performance Gap of an Energy-Efficient Building, through a Probabilistic Approach and On-Site Measurements

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6178
Author(s):  
Pierryves Padey ◽  
Kyriaki Goulouti ◽  
Guy Wagner ◽  
Blaise Périsset ◽  
Sébastien Lasvaux
Keyword(s):  
Energy Efficient ◽  
Probabilistic Approach ◽  
Energy Performance ◽  
High Energy ◽  
Performance Gap ◽  
Post Evaluation ◽  
Energy Efficient Buildings ◽  
Ex Post ◽  
The Difference ◽  
Energy Efficient Building

The performance gap, defined as the difference between the measured and the calculated performance of energy-efficient buildings, has long been identified as a major issue in the building domain. The present study aims to better understand the performance gap in high-energy performance buildings in Switzerland, in an ex-post evaluation. For an energy-efficient building, the measured heating demand, collected through a four-year measurement campaign was compared to the calculated one and the results showed that the latter underestimates the real heating demand by a factor of two. As a way to reduce the performance gap, a probabilistic framework was proposed so that the different uncertainties of the model could be considered. By comparing the mean of the probabilistic heating demand to the measured one, it was shown that the performance gap was between 20–30% for the examined period. Through a sensitivity analysis, the active air flow and the shading factor were identified as the most influential parameters on the uncertainty of the heating demand, meaning that their wrong adjustment, in reality, or in the simulations, would increase the performance gap.

Recombinant Materials and Contemporary Energy Efficient Architecture

2014 ◽  
Vol 936 ◽  
pp. 1423-1427 ◽  
Author(s):  
Mohammadjavad Mahdavinejad ◽  
Setareh Ghanavati ◽  
Narjes Elmi ◽  
Airya Norouzi Larki ◽  
Arash Zia
Keyword(s):  
Energy Consumption ◽  
Energy Efficient ◽  
Energy Resources ◽  
New Materials ◽  
Energy Efficient Buildings ◽  
Net Zero ◽  
Natural Energy ◽  
New Material ◽  
Energy Efficient Architecture ◽  
Reducing Energy

Nowadays, reducing energy consumption, using clean resources and the aim of creating net-zero building are going to be more and more important. It seems that use of recombinant materials may be a way to reach a more energy efficient architecture. There are considerable advances in development of new material, while the use of these materials is limited in architecture. Regarding to hypothesis of the research, identification of new materials, their performance and their properties, which cause decrease in energy consumption may be helpful for development a more energy efficient architecture. The results of the paper show that architects may incorporate recombinant material to reach energy efficient buildings, however they can play a crucial role in saving natural energy resources through adoption of recombinant materials in architecture and planning

Research on New Technology of Energy Efficient Buildings and Utilization of Renewable Energy Sources

2011 ◽  
Vol 224 ◽  
pp. 104-108
Author(s):  
Ya Guang Sun
Keyword(s):  
Energy Efficiency ◽  
Renewable Energy ◽  
Energy Efficient ◽  
New Technology ◽  
Renewable Energy Sources ◽  
Building Design ◽  
Energy Sources ◽  
Building Technology ◽  
Energy Efficient Buildings ◽  
Energy Efficient Building

Current social development is pressing for energy efficient buildings. The trend of consistent updating of energy-efficient building technology reflects the importance and urgency of energy efficiency in buildings. Through analysis on the current situation of building development, it can be obtained that the energy efficient buildings as well as utilization of renewable energy sources in buildings will be bound to be one of main topics for discussion in future building design.

scholarly journals TIPOLOGI KONSTRUKSI RUMAH TRADISIONAL “FALA GABA-GABA” SEBAGAI PERWUJUDAN BANGUNAN HEMAT ENERGI

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Endah Harisun ◽  
M Amrin Ms Conoras ◽  
Hafid Saefudin
Keyword(s):  
Energy Saving ◽  
Building Material ◽  
Energy Efficient ◽  
Natural Materials ◽  
Local Climate ◽  
Building Type ◽  
Eastern Indonesia ◽  
Energy Efficient Buildings ◽  
Materials Used

Fala Gaba-gaba is a traditional house with most of the building material coming from sago trees. Where sago trees are plants that grow a lot in eastern Indonesia including Maluku, North Maluku and Papua. Made from natural materials, coupled with an opening arrangement that adapts to the local climate makes the traditional house "fala gaba-gaba" as one of the energy-efficient buildings. The purpose of this study is to describe the construction of a traditional house "fala gaba-gaba" from the foundation, body and roof of the building associated with Energy Saving Buildings. The conclusion that can be drawn is one of the embodiments of energy-efficient buildings, this can be proven by placing the orientation of the building towards the direction of the wind and sun, wall and floor materials used, placement of openings that can maximize lighting and natural acceleration and building type which is a stilt house can maximize lighting and natural air.

scholarly journals The Effect of Density on the Delicate Balance between Structural Requirements and Environmental Issues for AAC Blocks: An Experimental Investigation

2021 ◽  
Vol 13 (23) ◽  
pp. 13186
Author(s):  
Daniele Ferretti ◽  
Elena Michelini
Keyword(s):  
Thermal Conductivity ◽  
Energy Efficient ◽  
Construction Materials ◽  
Mechanical Index ◽  
Material Density ◽  
Safety Issues ◽  
Heating And Cooling ◽  
Energy Efficient Buildings ◽  
Optimum Material ◽  
Energy Efficient Building

Among other construction materials, Autoclaved Aerated Concrete (AAC) offers several advantages to face the pressing need to build more sustainable and energy-efficient buildings. From the building side, the low thermal conductivity of AAC allows the realization of energy-efficient building envelopes, with interesting savings in terms of heating and cooling processes. The equilibrium between structural performances (related to safety issues) and energy efficiency requirements is, however, very delicate since it is strictly related to the search for an “optimum” material density. Within this context, this work discusses the results of wide experimental research, showing the dependency of the most important mechanical properties (compressive strength, elastic modulus, flexural strength and fracture energy) from density, as well as the corresponding variation in thermal conductivity. In order to identify the better compromise solution, a sort of eco-mechanical index is also defined. The big challenge for future researches will be the improvement of this eco-mechanical index by working on pore structure and pore distribution within the material without significantly reducing the density and/or by improving the strength of the skeleton material.

Influence of Thermal Break Element Applied in Balcony Slab on Internal Surface Temperature

2014 ◽  
Vol 1057 ◽  
pp. 79-86
Author(s):  
Peter Buday ◽  
Rastislav Ingeli ◽  
Miroslav Čekon
Keyword(s):  
Energy Efficient ◽  
Energy Use ◽  
Internal Surface ◽  
Building Envelope ◽  
Cold Climate ◽  
Energy Efficient Buildings ◽  
Thermal Bridge ◽  
Advanced Analysis ◽  
Thermal Bridges ◽  
Energy Efficient Building

Reduction of energy use in buildings is an important measure to achieve climate change mitigation. It is essential to minimize heat losses when designing and building energy efficient buildings. For an energy-efficient building in a cold climate, a large part of the space heating demand is caused by transmission losses through the building envelope. To achieve this, it is necessary to have processed a detailed design of buildings. Thermal bridges have to be eliminated in the design of buildings. Thermal bridges occur as point ones or linear. One of the specific details that create thermal leakage is located in balcony slabs. The balcony is one of the main reasons of the increased heat loss of buildings. The presence of thermal bridge in constructions of balcony envelopes influences the energy consumption, durability of the building envelopes, and also the thermal comfort of occupants. This paper is focused on advanced analysis of thermal performance of thermal break element applied in balcony slab with parametric correlation to the thermal properties of wall building envelope.

Structural Design of Energy Efficient Buildings Using Multi-Objective BB-BC Algorithm

2015 ◽  
Vol 725-726 ◽  
pp. 1544-1551 ◽  
Author(s):  
Aleksandar Milajić ◽  
Dejan Beljaković ◽  
Nikola Čulić ◽  
Nikolay Vatin ◽  
Vera Murgul
Keyword(s):  
Environmental Impact ◽  
Structural Design ◽  
Energy Efficient ◽  
Big Bang ◽  
Optimization Task ◽  
Energy Efficient Buildings ◽  
Big Crunch ◽  
The Big Bang ◽  
Cost Of Construction ◽  
Energy Efficient Building

Optimal design of an energy efficient building has to meet two confronted demands: to minimize total cost of construction, and to minimize environmental impact and energy consumption, which is usually obtained by the implementation of expensive insulation materials and equipment. Therefore, optimization task cannot be formulated by a single objective function, but requires at least two functions. Consequently, there is no unique, i.e. the best solution, but a number of more or less acceptable ones among which designer chooses a satisfying one considering given demands and limitations. This paper presents methodology for using the Big Bang – Big Crunch algorithm for optimum design of an energy efficient building that would meet two confronted demands – the lowest price and the lowest environmental impact during the 25 years period. Presented study showed that this approach provides several acceptable solutions among which the decision maker can make a choice in accordance with his/her needs and wishes.

NEAR ZERO ENERGY HOUSE (NZEH) DESIGN VARIABLES FOR HOUSING DEVELOPMENT

2016 ◽  
Vol 3 (2) ◽  
Author(s):  
Yusuf Latief ◽  
Mohammed Ali Berawi ◽  
Leni Supriadi ◽  
Jade Petroceany ◽  
Ayu Herzanita ◽  
...  
Keyword(s):  
Energy Efficient ◽  
Cost Effective ◽  
Sustainable Growth ◽  
Housing Development ◽  
High Price ◽  
Zero Energy ◽  
Energy Efficient Buildings ◽  
Design Variables ◽  
Energy Efficient Building

Housing development, as part of the economic development must be supported by energy availability in order to obtain a sustainable growth. One of the approaches to support the renewable energy promotions is designing and building energy efficient housing. However, optimal design of energy efficient buildings is facing two conflicting requirements, namely cost effective consideration and minimum environmental impact. The high costs from energy efficient building such as the Near Zero Energy House (nZEH) is due to high price of materials and equipment used, such as solar panel, insulation and other supporting materials. Indonesia is situated at the equator and received sunlight throughout the year. Nonetheless, this potential has not been fully discovered due to the high cost of the solar generated energy technology for housing. Moreover, this technology is not integrated with the main electricity network. Thus, the objective of this study is to identify the design variables for nZEH that suit the tropical climate condition in Indonesia. Experiments and Case Study are used for the study, and the validated design variables for nZEH, which includes building orientation, PV, fenestration, and passive design, will be the basis for optimum nZEH design.

scholarly journals Preparation and Study of Resin Translucent Concrete Products

2019 ◽  
Vol 2019 ◽  
pp. 1-12 ◽  
Author(s):  
Shen Juan ◽  
Zhou Zhi
Keyword(s):  
Mechanical Properties ◽  
Thermal Performance ◽  
Energy Efficient ◽  
Building Materials ◽  
Plain Concrete ◽  
Area Ratio ◽  
Green Energy ◽  
Light Transmittance ◽  
Energy Efficient Buildings ◽  
New Type

The development of new building materials is a crucial engine for promoting the development of green energy efficient buildings. In this paper, based on the excellent properties of light guiding of resin materials, a new type of resin translucent mortar-based concrete (RTMC) was researched; meanwhile, transmittance properties, mechanical properties, and thermal performance were studied, respectively. The results showed that the resin material possessed excellent light transmittance within the thickness of 100 mm, which can be as high as 93%. Moreover, when the area ratio was within 5%, the compressive strength of RTMC was close to that of plain concrete. Besides, RTMC had excellent thermal performance that the thermal conductivity of RTCM was 0.3815 w/(m·K), which was 60% lower than 0.89 w/(m·K) of plain concrete.

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