scholarly journals THE CONSTRUCTIVE AND ECONOMIC VALUE OF HOUSE INSULATION

2020 ◽  
Vol 10 (86) ◽  
Author(s):  
Oleksandr Hrytsenko ◽  
◽  
Iryna Burmenska ◽  
Vladyslav Buchko ◽  
◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Economic Effect ◽  
Mineral Wool ◽  
Insulation Material ◽  
Energy Prices ◽  
Building Stock ◽  
High Quality ◽  
Peace Of Mind ◽  
Short Period ◽  
The City

The article considers several different options for materials for external wall insulation and their advantages from an economic and structural point of view, taking into account the characteristics of some of the most popular insulation and the feasibility of use in a given case. Currently, energy saving and reducing the use of fuel resources is one of the most pressing issues, both in the construction of new buildings and in the case of reconstruction of the existing building stock and means the need to have structures that will minimize heat loss. It is understood why high-quality thermal insulation is an investment for many years in the conditions of unstable energy prices and the economic advantages of reliable insulation from different directions are described. The comparative technical characteristics of the most popular materials of polyfoam and mineral wool in thermal insulation of walls are given, features of their use in different conditions are analyzed, the average prices for the device for the city of Kiev are compared. For a cheaper option, the calculation of the economic effect for the city of Kyiv is performed. It is determined that one of the most important factors of comfortable life is maintaining a comfortable microclimate in the building for many years, regardless of the weather outside, where you can feel as safe and comfortable as possible, and its direct dependence on quality protection of structures outside. Emphasis is placed on the fact that reliable protection of structures is also an investment in the peace of mind of the building owner and the confidence that the structures will not require repair in a short period of time. Whatever new forms of buildings and structures are invented today by developers, high-quality and modern insulation is an integral part of modern and comfortable housing, a part that should not be neglected and first of all perform all work qualitatively and pay special attention to joints of sheets of insulation material, to have as little chance as possible of external influences on warming which action can reduce service life not only of a design of warming, but also of the building as a whole.

scholarly journals Selection of optimal thickness of thermal insulation of modular buildings on the basis of multicriterial analysis

2020 ◽  
pp. 82-91
Author(s):  
V. Zhelykh ◽  
◽  
Yu. Furdas ◽  
S. Shapoval ◽  
M. Rebman ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Multicriteria Analysis ◽  
Theoretical Research ◽  
Expert Assessment ◽  
Insulation Material ◽  
Modular Construction ◽  
Optimal Thickness ◽  
Short Period ◽  
Modular Buildings ◽  
Selection Of

Today modular construction is gaining popularity in the arrangement of production facilities. The purpose of the research is the theoretical substantiation of the choice of the optimal thickness of thermal insulation for external protections of modular buildings taking into account the evaluation criteria based on the method of hierarchy analysis. The article reflects the possibility of using modular buildings for residential and public needs. Given the peculiarities of the use of thermal insulation materials, such structures are erected in a short period of time due to the use of ready-made modules. It is also proposed to use multicriteria analysis to compare different thicknesses of thermal insulation of a modular building. The obtained results are presented in the form of petal diagrams and diagrams of global priorities, which made it possible to make an in-depth assessment of several thicknesses of thermal insulation. When conducting theoretical research, it should be noted that the importance of each of the criteria was taken into account for the selection of thermal insulation. An expert assessment was performed to determine the thickness of thermal insulation, which can be used for lightweight prefabricated structures of modular buildings. As a result of research, it was found that the most suitable thermal insulation material is polyurethane.

scholarly journals Innovative composite on the basis of an aerogel mat with an epoxy resin modified with PET waste and PCM

2018 ◽  
Vol 44 ◽  
pp. 00031 ◽  
Author(s):  
Bernardeta Dębska ◽  
Lech Lichołai ◽  
Jerzy Szyszka
Keyword(s):  
Epoxy Resin ◽  
Thermal Insulation ◽  
Thermal Capacity ◽  
Mineral Wool ◽  
Insulation Material ◽  
Composite Sandwich ◽  
Poly Ethylene Terephthalate ◽  
Large Heat ◽  
Poly Ethylene ◽  
Encapsulated Phase Change Material

The article presents a patent proposition of a composite – sandwich panel made of aerogel mat and a composition of encapsulated phase-change material PCM and epoxy resin modified by glycolysis based on poly(ethylene terephthalate) waste. A multifunctional thermal insulation material with a large heat capacity was obtained. This ability makes it possible to limit the temperature fluctuation in the space encased with the composite. In addition, thanks to the use of aerogel mat, which is characterized by much higher thermal insulation than commonly available materials, it is possible to achieve the assumed thermal resistance using more than two times lower thickness of insulation. The combination of aerogel and resin-PCM makes it possible to give the material virtually any shape. After the hardening process is completed, it has incomparably greater tensile, bending and compression strengths than Styrofoam and mineral wool. These features predispose it for use in situations where high thermal insulation is required while maintaining a low thickness of insulation material and a large thermal capacity of the housing material is indicated, e.g. thin divisions used in passive buildings, window joinery elements, engine compartments and cabin components in vehicles, household appliances etc.

Unused Plant Waste and Thermal Insulation Composition Boards on their Basis

2021 ◽  
Vol 887 ◽  
pp. 480-486
Author(s):  
T.N. Vachnina ◽  
I.V. Susoeva ◽  
A.A. Titunin ◽  
S.V. Tsybakin
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Wood Fiber ◽  
Mineral Wool ◽  
Wood Waste ◽  
Insulation Material ◽  
Plant Fibers ◽  
Coefficient Of Thermal Conductivity ◽  
Plant Waste ◽  
Technology Of Production

Many plant wastes are not currently used in production, they are disposed of in landfills or incinerated. The aim of this study is to develop a composite thermal insulation material from unused spinning waste of flax and cotton fibers and soft wood waste. Samples of thermal insulation materials from plant waste were made by drying using the technology of production of soft wood fiber boards. For composite board defined physico-mechanical characteristics and thermal conductivity. The experiment was carried out according to a second-order plan, regression models of the dependences of the material indicators on the proportion of the binder additive, drying temperature and the proportion of wood waste additives were developed. The study showed that composites from unused spinning waste of plant fibers and soft wood waste have the necessary strength under static bending, the swelling in thickness after staying in water is much lower in comparison with the performance of boards from other plant fillers. The coefficient of thermal conductivity of the boards is comparable with the indicator for mineral wool boards.

scholarly journals PRODUCTION OF THERMAL INSULATION MATERIAL BASED ON VOLCANIC ASH DEPOSITS OF PRIMAGADANYA

2019 ◽  
Vol 10 (2) ◽  
pp. 78-91
Author(s):  
A. V Bolotin ◽  
S. M Sergeev ◽  
A. A Lunegova ◽  
E. A Kochetkova
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Volcanic Ash ◽  
Mineral Wool ◽  
Raw Material ◽  
Thermal Calculation ◽  
Vapor Permeability ◽  
Insulation Material ◽  
Comparative Performance ◽  
Insulation Materials

Modern technologies are not standing still, and scientists are trying not only to invent new building materials, but also to find non-standard use of various raw materials that were previously considered unsuitable for use. Innovative technologies are actively used for modern construction of buildings, in particular, some types of new materials are used in the construction of various facilities. This is especially true in areas where it is not possible to import or use ordinary building materials for various reasons. Often, when designing a building, developers are wondering whether it is worth making the house warm during construction, and which insulation for the walls of the house is better to choose. This article addresses the question of which insulation for walls is most suitable for construction. The most common are mineral insulation, which are represented on the market today in the form of basalt slabs, fiberglass, etc. They have such advantages as low thermal conductivity, good thermal insulation and vapor permeability. The article presents a table with comparative performance characteristics of a mineral wool stone slab and a fiberglass slab. Stone or basalt wool has several advantages. It is able to withstand significant temperatures and temperature changes, the mats are easy to transport, convenient to install. In our opinion, a serious alternative to basalt in the production of thermal insulation materials is volcanic ash. One of the main features of volcanic ash are its building qualities, such as good thermal insulation and an environmentally friendly composition. Since here we are considering the possibility of producing insulation materials based on volcanic ash, we performed a thermal calculation of the enclosing structures. Also in the tables are the costs of transportation of volcanic ash from the field to the point of the proposed production of insulating material. Volcanic ash can be widely used in countries with high volcanic activity as an inexpensive raw material for the manufacture of building materials. It does not require additional processing and has a number of useful properties.

The Choice of Chemical Composition and Raw Materials for the Production of Basalt Wool with the Defined Characteristics

2018 ◽  
Vol 284 ◽  
pp. 1018-1023
Author(s):  
A.V. Khandoshka ◽  
Svetlana G. Vlasova
Keyword(s):  
Surface Tension ◽  
Chemical Composition ◽  
Chemical Analysis ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Mineral Wool ◽  
Chemical Compositions ◽  
Insulation Material ◽  
X Ray

The composition of mineral wool was selected for the research, based on the chemical composition of the raw materials, the determination of the acidity module to obtain the thermal insulation material with the best characteristics and the lowest cost of the production of basalt mineral wool. The paper deals with compositions of raw materials and selection chemical compositions of charges for production of basalt mineral wool, and the experiments of welded samples were made and tested for viscosity, surface tension, chemical analysis and x-ray analysis.

Reed as a Thermal Insulation Material: Experimental Characterisation of the Physical and Thermal Properties

2022 ◽  
Author(s):  
Raphaele Malheiro ◽  
Adriana Ansolin ◽  
Christiane Guarnier ◽  
Jorge Fernandes ◽  
Lívia Cosentino ◽  
...  
Keyword(s):  
Thermal Insulation ◽  
Thermal Performance ◽  
Carbon Emissions ◽  
Building Materials ◽  
Energy Use ◽  
Low Cost ◽  
Insulation Material ◽  
The European Union ◽  
Building Stock ◽  
Thermal Insulation Material

The building sector plays a significant role in reducing global energy use and carbon emissions. In the European Union (EU), the building stock represents 40% of total energy use and in which cooling and heating systems represent over 50%. Portugal is one of the EU countries where the consequences of energy poverty are most evident due to the families' financial inability to adequately climate their homes. The reasons are several, but they are mainly linked to buildings' poor passive thermal performance, resulting from inadequate adaptation to the climatic context and reduced thermal insulation. Thus, it is necessary to develop solutions to increase buildings’ thermal performance and reduce their potential environmental impact, which arises mainly from the significant use of active systems. In this sense, natural building materials are a promising solution, reducing energy use and carbon emissions related to buildings. This research studies the potential use of reed found in Portugal (Arundo donax) as a thermal insulation material. Its physical characterisation and the influence of geometry configuration on its thermal performance are evaluated. Its durability was studied too. Reed stalks were used to carry out the physical and durability tests. A reed board (150 x 150 mm) was built, and its thermal performance was tested in a hotbox. According to the results, the characteristics of reeds found in Portugal make it suitable to be used as a building material. Furthermore, regardless of the configuration studied, the reeds have a satisfactory thermal performance to be used as thermal insulation, under the requirements defined by Portuguese thermal regulation, Re ≥ 0.30 (m2.oC)/W. There is a trend to the mould growth in the reed, but only under favourable conditions. Additionally, considering the abundance of reed throughout the Portuguese territory, this is an eco-friendly and low-cost option that gathers all requirements to be more used in the construction market.

Potential of Cork Cement Composite as a Thermal Insulation Material

2015 ◽  
Vol 666 ◽  
pp. 17-29 ◽  
Author(s):  
Sukhdeo R. Karade
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Environmental Concern ◽  
Cement Composite ◽  
Mineral Wool ◽  
Comfort Level ◽  
Environmental Benefits ◽  
Insulation Material ◽  
Thermal Insulating ◽  
The Impact

The growing environmental concern throughout the globe has led architects & engineers to design energy efficient buildings. Consequently, they are looking for building materials that can reduce the energy consumption in buildings to maintain the comfort level. Use of proper thermal insulating materials can reduce the energy required for heating or cooling of the buildings. Presently mineral wool and various foams are used for this purpose. Efforts are being made to use wastes in making thermal insulation materials so that the impact on environment can be further reduced. Cork granules are obtained as waste from the cork processing industries that make ‘bottle stoppers’ as a main product. These granules have a low density and could be used as lightweight aggregates for making concrete with low thermal conductivity. This article describes the physico-mechanical properties of lightweight cementitious composites made using cork granules. Further, environmental benefits of their application in thermal insulation of buildings has been discussed.

RETROFITTING FOR IMPROVING ENERGY EFFICIENCY: THE EMBODIED ENERGY RELEVANCE FOR BUILDINGS' THERMAL INSULATION

2021 ◽  
pp. 1-15
Author(s):  
Sara Abd Alla ◽  
Vincenzo Bianco ◽  
Federico Scarpa ◽  
Luca A. Tagliafico
Keyword(s):  
Energy Efficiency ◽  
Thermal Insulation ◽  
Energy Savings ◽  
Primary Energy ◽  
Climatic Conditions ◽  
Embodied Energy ◽  
Building Stock ◽  
Insulation Materials ◽  
Energy Impact ◽  
The City

Abstract Envelope insulation is a well-known strategy to improve buildings' energy efficiency. This paper considers two archetypes of an apartment block typology largely diffused in the Italian building stock and evaluates the energy savings resulting from the application of three insulation materials: polyurethane foam, rock wool and resin bonded fibre-board. The energy requirements for winter heating and summer cooling are assessed with EnergyPlus and then compared to the embodied energy of the insulation materials. Hence, the energy and carbon paybacks are calculated, and a cost analysis is proposed to provide an insight on the market impact for the retrofit materials' choice. The apartment block model is analyzed in three main cities (Rome, Milan, Palermo) allowing to assess the climatic conditions impact in terms of minimization of primary energy consumption and environmental emissions. Simulations showed that the thermal insulation has a higher impact on winter heating and slightly affects the summer cooling requirement. In Milan, the refurbishment gains relevance as the energy and carbon payback periods are shorter than those of the city of Palermo characterized by a warmer weather. Considering the embodied energy impact, this method allows to estimate the maximum potential for energy savings in existing buildings and provides an estimation of achievable results in short-medium period.

scholarly journals Moisture behavior of external insulated precast concrete wall panels

2020 ◽  
pp. 174425912092585
Author(s):  
Pauli Sekki ◽  
Timo Karvinen ◽  
Juha Vinha
Keyword(s):  
Relative Humidity ◽  
Precast Concrete ◽  
Concrete Surface ◽  
Mineral Wool ◽  
Insulation Material ◽  
Concrete Wall ◽  
Building Stock ◽  
Interior Surface ◽  
Insulation Materials ◽  
Wall Panels

Excess moisture in concrete structures is a major problem in building industry. It is claimed that degradation of the finishing materials of concrete slabs is the largest source of volatile organic compound in the building stock in the Nordic countries. Considering concrete wall panels, the choice of the insulation material influences concrete drying considerably and causes a risk for moisture accumulation on the interior surface, if vapor tight finishing materials are used or if finishing materials are installed prematurely. Mineral wool insulation, which has predominately been used in Finland, is a vapor open material. However, vapor tight plastic foam insulation materials are nowadays more commonplace. Here we show that the overall rate of drying of the concrete panel with a vapor open insulation material is higher in comparison to the concrete panel with vapor tight insulation materials. However, relative humidity distribution near the inner surface of the concrete panel at the end of the drying phase is almost identical irrespective of the insulation material and the water vapor resistance of the interior surface material has a greater impact on the relative humidity level on the inner concrete surface. Moisture behavior of concrete panel walls is studied under a certain building schedule in Finnish environment and building conditions by numerical simulation. The model for drying of concrete is calibrated based on laboratory measurements. According to our study, self-desiccation and changing diffusivity due to the hydration process of the concrete cannot be ignored when evaluating the moisture behavior of the concrete wall panel structure with a low water binder ratio ( w/ b < 0.5). Measurements indicate that the early age humidity drop is by up to 10 percentage points.

scholarly journals The Application of Silica-Based Aerogel Board on the Fire Resistance and Thermal Insulation Performance Enhancement of Existing External Wall System Retrofit

Energies ◽  
2021 ◽  
Vol 14 (15) ◽  
pp. 4518
Author(s):  
Kuang-Sheng Liu ◽  
Xiao-Feng Zheng ◽  
Chia-Hsing Hsieh ◽  
Shin-Ku Lee
Keyword(s):  
Thermal Insulation ◽  
Fire Resistance ◽  
Performance Enhancement ◽  
High Surface ◽  
Building Envelope ◽  
Insulation Material ◽  
Building Stock ◽  
External Wall ◽  
Resistance Performance ◽  
Insulation Performance

Due to the need of good thermal performance, external wall insulation (EWI) is usually made of materials that are not fire resistant and sometimes flammable. That restricts its application to a particular circumstance such as limited building height. Hence, a material with good thermal insulation and fire resistance performance would allow EWI to be more widely applied. This paper introduces a novel material: a silica-based aerogel porous board, which differs itself from mainstream products available in the market because of its outstanding properties, such as low density, high surface area, low thermal conductivity and superhydrophobicity. Herein, its thermal insulation and fire-resistant performance were tested and compared with commercial products. The cone calorimeter analysis results indicated that the aerogel porous board could improve the fire resistance performance. Moreover, the evaluation of thermal insulation performance suggested that the application of an aerogel porous board on the external stone wall of existing buildings can decrease the U-value by 60%. Through the detailed insight into the case-study, it is quite clear that the carbon impact of building stock could be greatly reduced by means of a coherent set of building envelope retrofitting actions based on this innovative heat insulation material, without compromising the fire safety.

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