scholarly journals Moisture Behavior of Thermal Insulation Coating Consisted of Vacuum-Hollow Nano-Ceramic Microspheres

2018 ◽  
Author(s):  
Dávid Bozsaky
Keyword(s):  
Thermal Insulation ◽  
Material Properties ◽  
Time Trend ◽  
Ceramic Coatings ◽  
Building Industry ◽  
Mathematical Connections ◽  
Thermal Insulating ◽  
Insulation Coating ◽  
Insulation Quality ◽  
Thermodynamic Processes

Nanotechnology-based thermal insulation materials have appeared in building industry in the last two decades. Among them thermal insulating coatings consisted of vacuum-hollow nano-ceramic microspheres are the subjects of most professional discussion. Most studies about these coatings focus only on examination of thermodynamic properties, because there is still no consensus in academic circles about thermodynamic processes inside nano-ceramic coatings. These professional discussions distract attention from other unknown but also important material properties, like behavior by contact with moisture. This paper summarizes the results of moisture behavior tests with nano-ceramic thermal insulation coatings which were conducted to determine the time trend of water absorption, as well as volume, mass and thermal insulation quality changes caused by increasing moisture content. Analyzing the results mathematical connections were found to describe the relation between water content, dimensional and thermal conductivity changes.

Comprehensive Measures should be Taken for Exterior Window Thermal Insulating Energy-Saving

2013 ◽  
Vol 361-363 ◽  
pp. 327-330 ◽  
Author(s):  
Jie Zhang ◽  
Su Fen Dong
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Material Properties ◽  
North China ◽  
Insulation System ◽  
Engineering Applications ◽  
Thermal Insulating ◽  
Saving Effect

EPS thermal insulation system is one of the wider applications of exterior insulation system in the area of North China. In engineering applications, it is extremely important to improve the thermal insulation engineering quality to familiar with the structure principle, strengthen strict re-inspection of the material properties , standardized operation and fine construction, but also conducive to ensure its energy-saving effect and durability.

scholarly journals Series of Experiments with Thermal Insulation Coatings Consisted of Vacuum-Hollow Nano-Ceramic Microspheres

2018 ◽  
Vol 11 (1) ◽  
pp. 17-33
Author(s):  
David Bozsaky
Keyword(s):  
Heat Transfer ◽  
Thermal Insulation ◽  
Convective Heat Transfer Coefficient ◽  
Ceramic Coatings ◽  
Complete Agreement ◽  
Transfer Resistance ◽  
Structured Materials ◽  
Thermal Insulating ◽  
Series Of Experiments

Because of the rigorous regulations in the 21st century it has become a serious task for designers to find more effective ways for thermal insulation. One of these options is the application of nanotechnology-based materials. Among nano-scale structured materials the most uncertainties are found about the thermal insulating quality of thermal insulation coatings consisted of vacuum-hollow nano-ceramic microspheres. Complete agreement had not been already found about the mechanism of their insulating effect. In order to explore and describe the thermodynamic process inside nano-ceramic coatings (NCC) 6 series of heat transfer resistance experiments were performed in 2014-2017. Several building structure configurations with 12 different orders of layers were tested with a standard heat flow meter. On basis of these results it could be concluded that in case of nano-structured materials convective heat transfer coefficient might be taken account in different way than in case of traditional macro-structured thermal insulation materials.

Settlement of Crushed Straw

2014 ◽  
Vol 1041 ◽  
pp. 55-58
Author(s):  
Jiří Teslík ◽  
Jiri Labudek ◽  
Barbora Valová ◽  
Martina Vodičková
Keyword(s):  
Thermal Insulation ◽  
Experimental Measurement ◽  
Building Material ◽  
Sustainable Construction ◽  
Building Industry ◽  
Supporting Structure ◽  
Thermal Insulating ◽  
Insulating Properties

This article is focused on an experimental measurement of settlement of blown insulation from crushed straw. Straw has appeared like building material in recent years. It is ecological and cheap building material which is required for sustainable construction. Straw is usually used in form of bales. These are generally used like thermal insulation filling the supporting structure. An alternative to straw bales can be crushed straw. Crushed straw is not used in building industry currently. Its thermal insulating properties and structure are appropriate to use it like blown or loose thermal insulation. The experimental measurement was necessary to verify application of crushed straw by blowing or bulk and to find out values of settlement. Results of this measurement are described in this article.

scholarly journals Application of Nanotechnology-Based Thermal Insulation Materials in Building Construction

2016 ◽  
Vol 24 (1) ◽  
pp. 17-23 ◽  
Author(s):  
David Bozsaky
Keyword(s):  
Thermal Insulation ◽  
Material Properties ◽  
Narrow Range ◽  
Space Research ◽  
Building Construction ◽  
Building Industry ◽  
Basic Information ◽  
Insulation Materials ◽  
Important Material ◽  
Potential Applications

AbstractNanotechnology-based materials have previously been used by space research, pharmaceuticals and electronics, but in the last decade several nanotechnology-based thermal insulation materials have appeared in building industry. Nowadays they only feature in a narrow range of practice, but they offer many potential applications. These options are unknown to most architects, who may simply be afraid of these materials owing to the incomplete and often contradictory special literature. Therefore, they are distrustful and prefer to apply the usual and conventional technologies. This article is intended to provide basic information about nanotechnology-based thermal insulation materials for designers. It describes their most important material properties, functional principles, applications, and potential usage options in building construction.

Investigation of thermo-physical properties of thermal insulation coating

2017 ◽  
Author(s):  
Michal Kopčok ◽  
Jozefa Lukovičová ◽  
Jozef Kačur ◽  
Gabriela Pavlendová
Keyword(s):  
Physical Properties ◽  
Thermal Insulation ◽  
Insulation Coating ◽  
Thermo Physical Properties

Evaluating Mechanical Properties of Ceramics by Relative Methods

2007 ◽  
Vol 336-338 ◽  
pp. 2406-2410
Author(s):  
Yi Wang Bao ◽  
Xiao Xue Bu ◽  
Yan Chun Zhou ◽  
Li Zhong Liu
Keyword(s):  
Mechanical Properties ◽  
Material Properties ◽  
Ceramic Coatings ◽  
Relative Method ◽  
Tempered Glass ◽  
Theoretic Analysis ◽  
Surface Strength ◽  
Indirect Approach ◽  
Before And After ◽  
The Relationship

A relative method, defined as indirect approach to evaluate the material properties via the relationship between unknown properties and a known property, is proposed to estimate some properties that could not be measured by the traditional methods for ceramics. Experiments and theoretic analysis based on the relative method were carried out in this study to estimate the properties in following aspects: determining the temperature dependence of elastic modulus of some machineable ceramics by comparing the deflections; obtaining the modulus and strength of ceramic coatings supported by substrates, from the variation in properties of the rectangular beam samples before and after coating; estimating the residual stresses in tempered glass by comparing the change in the surface strength after strengthening.

Investigation of Thermal Insulation Materials Based on Easy Renewable Row Materials from Agriculture

2011 ◽  
Vol 335-336 ◽  
pp. 1412-1417 ◽  
Author(s):  
Jiri Zach ◽  
Jitka Peterková ◽  
Vít Petranek ◽  
Jana Kosíková ◽  
Azra Korjenic
Keyword(s):  
Thermal Insulation ◽  
Building Materials ◽  
Raw Materials ◽  
Building Construction ◽  
Materials Development ◽  
Insulation Materials ◽  
Thermal Insulating ◽  
Plastic Materials ◽  
Energy Consuming ◽  
Rock Wool

Production of building materials is mostly energy consuming. In the sphere of insulation materials we mostly see rock wool based materials or foam-plastic materials whose production process is demanding from material aspect and raw materials aspect as well. At present the demand for thermal insulation materials has been growing globally. The thermal insulation materials form integral part of all constructions in civil engineering. The materials mainly fulfill the thermal insulating functions and also the sound-insulating one. The majority of thermal insulation materials are able to fulfill both of the functions simultaneously. The paper describes questions of thermal insulation materials development with good sound properties based on natural fibres that represent a quickly renewable source of raw materials coming from agriculture. The main advantage of the materials are mainly the local availability and simple renewability of the raw materials. In addition an easy recycling of the materials after their service life end in the building construction and last but not least also the connection of human friendly properties of organic materials with advanced product manufacture qualities of modern insulation materials.

The Preparation of Fluorocarbon Thermal Insulation Coating with Different Fillers

2015 ◽  
Vol 1101 ◽  
pp. 36-39 ◽  
Author(s):  
Xiu Fang Ye ◽  
Dong Chu Chen ◽  
Meng Lei Chang ◽  
Qi Hua Liang ◽  
Qi Peng Lu
Keyword(s):  
Thermal Insulation ◽  
Tin Oxide ◽  
Polyvinylidene Fluoride ◽  
Hollow Glass Microsphere ◽  
Test Results ◽  
Hollow Glass ◽  
Insulation Coating ◽  
Insulation Performance ◽  
Functional Fillers ◽  
Closed Pore

According to the mechanism of thermal insulation, closed pore perlite, hollow glass microsphere and nanoantimony tin oxide (ATO) powder three different kinds of functional fillers were adopted respectively to prepare obstructive, reflective and radiative thermal insulation coating base on polyvinylidene fluoride emulsion, and how the category and content of functional fillers effect the thermal insulation performance of the fluorocarbon thermal insulation coating (FTIC) was investigate. The test results showed that, all the three functional fillers has an significant effect on the thermal insulation performance of FTIC.

Research of Appropriateness of Residence Outer Wall Thermal Insulating System in New Rural Construction in Zhejiang

2012 ◽  
Vol 461 ◽  
pp. 237-240 ◽  
Author(s):  
Yan Zhu ◽  
Jian Ge ◽  
Dan Hua Ying
Keyword(s):  
Energy Saving ◽  
Thermal Insulation ◽  
Outer Wall ◽  
Pilot Program ◽  
Cold Winter ◽  
Broad Applicability ◽  
Thermal Insulating ◽  
Energy Consumptions ◽  
Rural Construction ◽  
New Rural Construction

Buildings have consumed around 1/4-1/3 of the country’s energy consumptions, of which the envelope structures, especially the outer walls, takes the largest percentage. The pilot program for external thermal insulation in new rural construction has commenced along with full implementation of outer wall energy saving and thermal insulation in Hot Summer and Cold Winter Zone. The program has proved the thermal insulating technology which is characterized by broad applicability, strong operability, reliable thermal insulating performance and low comprehensive cost, is a set of thermal insulating technology compatible with the level of rural economic and technical development in China.

Optimal Porosity of Fibrous Battings for Thermal Insulation

2007 ◽  
Author(s):  
Jintu Fan ◽  
Ning Du ◽  
Huijun Wu
Keyword(s):  
Simulated Annealing ◽  
Porous Materials ◽  
Thermal Insulation ◽  
Optimal Distribution ◽  
Fibrous Materials ◽  
Simulated Annealing Method ◽  
Thermal Insulating ◽  
Volume Method ◽  
Fiber Radius ◽  
Annealing Method

The porosity of fibrous porous materials is an important factor to the thermal insulating performance of the material. This paper considers both the optimal porosity of uniform fibrous battings and the optimal distribution of the porosity of non-uniform fibrous battings for thermal insulation. The former was determined by an approximate analytical solution and a numerical simulation by using Finite Volume Method, and the latter was studied by applying Simulated Annealing Method. The study showed that the optimal porosity of uniform fibrous porous materials is very much dependent on fiber emissivity, and fiber radius, but little influenced by the temperature difference of the boundaries. For non-uniform fibrous materials, there can be an optimal distribution of porosity, which can be predicted by applying the Simulated Annealing Method.

Sign in / Sign up

Export Citation Format

Share Document