scholarly journals The Performance Study of Modified Glass Wool Board External Thermal Insulation System and the Application in the Energy-efficient Construction in Existing Building

2016 ◽  
Author(s):  
Guo-Zhong Lu ◽  
Xue-Song Zheng ◽  
Xiu-Juan Ding ◽  
Wei-Xuan Zhao
Keyword(s):  
Thermal Insulation ◽  
Energy Efficient ◽  
Glass Wool ◽  
Performance Study ◽  
Insulation System ◽  
Existing Building ◽  
Efficient Construction

The Application of ACF Inorganic Fibers Wool Board as External Thermal Insulation for Energy-Efficient Retrofit Project

2014 ◽  
Vol 1052 ◽  
pp. 420-424
Author(s):  
Guo Zhong Lu ◽  
Tong Yu Gao ◽  
Hang Lv ◽  
Wei Xuan Zhao ◽  
Chen Zhao Liu ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Energy Efficient ◽  
Building Energy ◽  
Good Effect ◽  
Building Energy Efficiency ◽  
Construction Technology ◽  
System Construction ◽  
Insulation System ◽  
Existing Building ◽  
Performance Indexes

This paper introduces the composition, function, system construction and construction technology of ACF Inorganic Fibers Wool Board External Thermal Insulation System (Abbreviation: ACF System), and also evaluated its properties. Results showed that all the performance indexes of this system meet the requirement of company standard. The good effect has been achieved in its application in energy-efficient retrofit in existing building of Xicheng District, Beijing. It demonstrates that the ACF System not only satisfies the building energy efficiency requirements but also owns a good fire resistance property as a new building fire-resistant insulation system. It possesses a prospect market and extending significance.

scholarly journals Assessment of the Annual Transmission Heat Loss Reduction of a Refurbished Existing Building with an Advanced Solar Selective Thermal Insulation System

2021 ◽  
Vol 13 (13) ◽  
pp. 7336
Author(s):  
Peter Steininger ◽  
Matthias Gaderer ◽  
Belal Dawoud
Keyword(s):  
Heat Loss ◽  
Thermal Insulation ◽  
Simulation Models ◽  
Radiant Heat ◽  
3D Models ◽  
Heat Fluxes ◽  
Design Parameters ◽  
Insulation System ◽  
Existing Building ◽  
Flow Map

A numerical parameter sensitivity analysis of the design parameters of the recently published solar selective thermal insulation system (SATIS) has been carried out to enhance its thermal and optical properties. It turned out that the insulation properties of SATIS can be effectively improved by reducing the length of the glass closure element. Increasing the area share of the light conducting elements (LCEs) and decreasing their length-to-diameter (L/D) ratio were identified as key parameters in order to increase the solar gain. Two SATIS variants were compared with the same wall insulation without SATIS in a yearly energetic performance assessment. The SATIS variant with 10 mm length of the closure element, 44.2% area share of LCE, as well as front and rear diameters of 12 mm/9 mm shows an 11.8% lower transmission heat loss over the heating period than the wall insulation without SATIS. A new methodology was developed to enable the implementation of the computed solar gains of SATIS in 1D simulation tools. The result is a radiant heat flow map for integration as a heat source in 1D simulation models. A comparison between the 1D and 3D models of the inside wall heat fluxes showed an integral yearly agreement of 98%.

scholarly journals Durability of Thermal Renders with Lightweight and Thermal Insulating Aggregates: Regranulated Expanded Cork, Silica Aerogel and Expanded Polystyrene

Gels ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 35
Author(s):  
André Morgado ◽  
António Soares ◽  
Inês Flores-Colen ◽  
Maria do Rosário Veiga ◽  
Maria Glória Gomes
Keyword(s):  
Thermal Insulation ◽  
Silica Aerogel ◽  
Energy Efficient ◽  
Accelerated Aging ◽  
Expanded Polystyrene ◽  
Ultra Sound ◽  
Freeze Thaw ◽  
Thermal Insulating ◽  
Before And After ◽  
Efficient Construction

Following the trend of energy-efficient construction, renders with thermal insulation properties have been studied for replacing conventional renders. However, there are still few studies on the durability of these renders that may become a barrier for their implementation. In this study, the performance of lightweight renders for thermal insulation to accelerated aging cycles and freeze/thaw cycles is discussed. For this purpose, renders with regranulated expanded cork (GEC), silica aerogel (SA), and expanded polystyrene (EPS) were produced and tested for compressive strength, ultra-sound velocity, Young’s modulus, and thermal conductivity before and after accelerated aging cycles (hygrothermal, IR and freeze/thaw cycles). With this study, a comparison between the influence of different aggregates on renders is carried out in order to understand their effect on different properties of renders.

scholarly journals Advantages of a passive house and technical requirements in the construction of an energy-saving house

2021 ◽  
pp. 14-20
Author(s):  
I.V. Donenko ◽  
О.М. Nazarenko ◽  
A.O. Trotsenko
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Efficient ◽  
Thermal Protection ◽  
Cost Comparison ◽  
Performance Ratio ◽  
Passive House ◽  
Technical Requirements ◽  
Efficient Construction ◽  
Design And Construction

Formulation of the problem. The tariff policy in our state determines the conduct of research, innovative developments in the field of energy efficient construction. The highest degree of energy efficiency is realized in the concept of "passive house". The advantages of a passive house and a cost comparison with a conventional cottage open up the concept of passive construction with a rational price-performance ratio in design and construction. The purpose of the article is the necessary study of reinforced thermal insulation for the functioning of a passive house − the most important requirement. Heat loss is a critical component of the energy balance and should not be neglected. Results. A comparative analysis of external structures was carried out to determine the standard characteristics of a passive house. Thermal calculations of walls and roofs were performed to check thermal protection. The findings showed that thermal insulation is an important aspect in the design and construction of a passive house, the structures must meet high thermal resistance requirements. An important factor is the continuity of the thermal insulation layer to achieve the tightness of the house. Just a 20 % increase in the cost of building a passive house compared to a cottage provides many benefits and savings in the future. Scientific novelty and practical significance. After reviewing the German experience and considering the issue of energy conservation in Ukraine, we can conclude that such construction should gain momentum and be popular in our country. With the help of the analysis and the collected data, it is possible to clearly show that energy-efficient solutions should be implemented in every construction, to solve an urgent issue and for the further development and implementation of effective architectural solutions. Keywords: passive house; energy efficient construction; thermomodernization; experience; energy efficiency; thermal insulation

scholarly journals The Analysis of Small Investors’ Demands on a Thermal Insulation System for a Family House: A Case Study

2021 ◽  
Vol 13 (5) ◽  
pp. 2491
Author(s):  
Alena Tažiková ◽  
Zuzana Struková ◽  
Mária Kozlovská
Keyword(s):  
Decision Making ◽  
Thermal Insulation ◽  
Construction Cost ◽  
Environmental Cost ◽  
Multi Criteria Decision Making ◽  
Insulation System ◽  
Insulation Systems ◽  
Small Investors ◽  
The Cost ◽  
Family House

This study deals with small investors’ demands on thermal insulation systems when choosing the most suitable solution for a family house. By 2050, seventy percent of current buildings, including residential buildings, are still expected to be in operation. To reach carbon neutrality, it is necessary to reduce operational energy consumption and thus reduce the related cost of building operations and the cost of the life cycle of buildings. One solution is to adapt envelopes of buildings by proper insulation solutions. To choose an optimal thermal insulation system that will reduce energy consumption of building, it is necessary to consider the environmental cost of insulation materials in addition to the construction cost of the materials. The environmental cost of a material depends on the carbon footprint from the initial origin of the material. This study presents the results of a multi-criteria decision-making analysis, where five different contractors set the evaluation criteria for selection of the optimal thermal insulation system. In their decision-making, they involved the requirements of small investors. The most common requirements were selected: the construction cost, the construction time (represented by the total man-hours), the thermal conductivity coefficient, the diffusion resistance factor, and the reaction to fire. The confidences of the criteria were then determined with the help of the pairwise comparison method. This was followed by multi-criteria decision-making using the method of index coefficients, also known as the method of basic variant. The multi-criteria decision-making included thermal insulation systems based on polystyrene, mineral wool, thermal insulation plaster, and aerogels’ nanotechnology. As a result, it was concluded that, currently, in Slovakia, small investors emphasize the cost of material and the coefficient of thermal conductivity and they do not care as much about the carbon footprint of the material manufacturing, the importance of which is mentioned in this study.

Embedding metal foam into metal–organic framework monoliths for triggering a highly efficient release of adsorbed atmospheric water by localized eddy current heating

2021 ◽  
Author(s):  
Yingle Tao ◽  
Qiangqiang Li ◽  
Qiannan Wu ◽  
Haiqing Li
Keyword(s):  
Thermal Insulation ◽  
Eddy Current ◽  
Energy Efficient ◽  
Metal Foam ◽  
Low Cost ◽  
Metal Organic Framework ◽  
Atmospheric Water ◽  
Highly Efficient ◽  
Metal Organic ◽  
Eddy Current Heating

Localized eddy current heating delivered by metal foam embedded in a MOF monolith provides a novel, low-cost, and energy efficient way to overcome the thermal insulation nature of MOF monoliths and realize their highly efficient regenerations.

scholarly journals Implementation of BIM Modelling and Simulation Tools in Reducing Annual Energy Consumption of Multifamily Dwellings

2020 ◽  
Vol 170 ◽  
pp. 01002
Author(s):  
Subbarao Yarramsetty ◽  
MVN Siva Kumar ◽  
P Anand Raj
Keyword(s):  
Energy Efficient ◽  
Energy Use ◽  
Construction Materials ◽  
Residential Building ◽  
Energy Simulation ◽  
Point Of View ◽  
Rotational Angle ◽  
Existing Building ◽  
Simulation Tools ◽  
Efficient Option

In current research, building modelling and energy simulation tools were used to analyse and estimate the energy use of dwellings in order to reduce the annual energy use in multifamily dwellings. A three-story residential building located in Kabul city was modelled in Revit and all required parameters for running energy simulation were set. A Total of 126 experiments were conducted to estimate annual energy loads of the building. Different combinations from various components such as walls, roofs, floors, doors, and windows were created and simulated. Ultimately, the most energy efficient option in the context of Afghan dwellings was figured out. The building components consist of different locally available construction materials currently used in buildings in Afghanistan. Furthermore, the best energy efficient option was simulated by varying, building orientation in 15-degree increments and glazing area from 10% to 60% to find the most energy efficient combination. It was found that combination No. 48 was best option from energy conservation point of view and 120-degree rotational angle from north to east, of the existing building was the most energy-efficient option. Also, it was observed that 60% glazing area model consumed 24549 kWh more electricity compared to the one with 10% glazing area.

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