The Comparison of Thermal Insulation Materials for a Process Pipeline

2018 ◽  
Vol 927 ◽  
pp. 176-182
Author(s):  
Polina A. Tretiakova ◽  
O.A. Stepanov ◽  
T.V. Tretyakova
Keyword(s):  
Natural Gas ◽  
Thermal Resistance ◽  
Thermal Insulation ◽  
Heat Insulation ◽  
Mineral Wool ◽  
Essential Property ◽  
Pressure Reduction ◽  
Insulation Materials ◽  
Materials Used

the article describes and compares thermal insulation materials used for heat insulation of a process pipeline transporting natural gas after its pressure reduction. The following thermal insulation materials are examined: mineral wool and cellular rubber substance. Linear thermal resistance has been chosen as the essential property of the materials.

Ensuring energy efficiency of refrigeration piping

2021 ◽  
pp. 45-52
Author(s):  
G.I. Petrov ◽  
V.N. Kornienko ◽  
A.G. Donetskikh
Keyword(s):  
Energy Efficiency ◽  
Comparative Analysis ◽  
Thermal Insulation ◽  
Raw Materials ◽  
Thermal Characteristics ◽  
Operational Reliability ◽  
Insulating Materials ◽  
Insulation Materials ◽  
Synthetic Rubber ◽  
Materials Used

Improving energy efficiency and energy saving in refrigeration technology depends largely on the use of modern thermal insulation materials in the thermal insulation structures of refrigeration pipelines. The article presents a comparative analysis of the thermal characteristics and operational properties of heat-insulating materials used in refrigeration. The features of RUFLEX thermal insulation materials based on foamed synthetic rubber produced from domestic raw materials and their compliance with the requirements of energy efficiency, durability, operational reliability and safety are considered.

scholarly journals Optimization of the level of thermal insulation of enclosing structures of civil buildings

2018 ◽  
Vol 245 ◽  
pp. 06002 ◽  
Author(s):  
Jurgis Zemitis ◽  
Maxim Terekh
Keyword(s):  
Thermal Resistance ◽  
Thermal Insulation ◽  
Economic Efficiency ◽  
Heat Insulation ◽  
Optimal Level ◽  
Economic Conditions ◽  
Additional Heat ◽  
Heat Protection ◽  
Definition Of ◽  
The Given

In the work, methods of an estimation of economic efficiency of additional heat insulation of building enclosing structures and definition of an optimum thermal resistance are considered, deficiencies of the given techniques are marked. A model is proposed for determining the optimal level of heat protection in the new economic conditions.

scholarly journals Foundation Research on Physicochemical Properties of Mine Insulation Materials

Coatings ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 355
Author(s):  
Chuanbin Hou ◽  
Song Xin ◽  
Long Zhang ◽  
Shangxiao Liu ◽  
Xiao Zhang
Keyword(s):  
Compressive Strength ◽  
Thermal Insulation ◽  
Test Specimen ◽  
Heat Insulation ◽  
Mining Industry ◽  
Basalt Fiber ◽  
High Strength ◽  
Superior Performance ◽  
Insulation Materials ◽  
Insulation Effect

The known cooling methods for the high-temperature operating environment of a mine mainly include ventilation, refrigeration, heat insulation, and individual protection. Among them, the superior performance and wide application of the heat insulation materials have attracted the attention of the coal mining industry. In this paper, three types of mineral insulation materials were prepared using basalt fiber, glass fiber, vitrified microbeads in combination with cement, sand, high-strength ceramsite, water, etc. In addition, the thermal conductivity and compressive strength of the prepared specimens were assessed. The results show that the test specimen containing basalt fiber had a great thermal insulation effect and achieved the required compressive strength. Furthermore, according to the COMSOL simulation results, the test specimen containing basalt fiber had a better thermal insulation effect than the ordinary concrete materials. Therefore, the research results of this article have guiding significance to search for new mine thermal insulation materials.

COMPUTATIONAL ANALYSIS OF HEAT AND MASS TRANSPORT IN CHARACTERISTIC DETAIL OF INTERIOR THERMAL INSULATION SYSTEM

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Jiří Maděra ◽  
Jan Kočí ◽  
Václav Kočí
Keyword(s):  
Computational Modeling ◽  
Thermal Insulation ◽  
System Application ◽  
Building Materials ◽  
Wood Fiber ◽  
Mineral Wool ◽  
Point Of View ◽  
Insulation Materials ◽  
Beneficial Effects ◽  
The Right

Computational modeling represents useful tool for the assessment of newly designed or refurbished building materials and structures. Especially, when complex buildings elements need to be assessed from a hygrothermal point of view, the computational modeling is the right approach with desired power and accuracy. In this paper a historical wall element is investigated using two-dimensional simulation in order to study the effect of application of several insulation materials in various scenarios. In total two insulation materials are investigated (mineral wool, wood fiber boards) that are applied in three different scenarios. All simulations are performed under real climatic load. The results of the computational simulations reveal potential weak points in system application and can provide engineers and designers with valuable recommendations and practical information. The best results were obtained for thermal insulation from mineral wool. On the other hand, an improper system application can lead to a significant devaluation of the beneficial effects on the thermal performance of the studied brick element.

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.

scholarly journals ДОСЛІДЖЕННЯ ДИСПЕРСНОГО СКЛАДУ ПИЛУ ПРИ ВИРОБНИЦТВІ ТЕПЛОІЗОЛЯЦІЙНИХ МАТЕРІАЛІВ

World Science ◽  
2019 ◽  
Vol 1 (2(42)) ◽  
pp. 18-23
Author(s):  
Гаджиєв Едуард Назімович
Keyword(s):  
Thermal Insulation ◽  
Raw Materials ◽  
Mineral Wool ◽  
Fine Dust ◽  
Atmospheric Air ◽  
Gas Cleaning ◽  
Insulation Materials ◽  
Aspiration System ◽  
Cleaning Equipment ◽  
Selection Of

The problem of air pollution with environmentally hazardous dust with a particle size of up to 10 microns at plants for the production of thermal insulation materials is considered. The purpose of this work is to study the dispersed composition of dust in the production of insulation materials (such as mineral wool), and to determine the effectiveness of the existing gas cleaning equipment, which traps pollutants. The dispersed composition of the dust generated at the plant for the production of thermal insulation materials, and the dispersed composition of the dust collected by the dust-cleaning equipment was investigated. Experimentally and with the use of computer programs, it has been established that the efficiency of extracting fine dust from dust- cleaning equipment does not exceed 78%. It is established that the dust of mineral wool entering the aspiration system is dominated by particles with a size from 2.5 microns to 25 microns. Dust with a SiO2 content of up to 70%, which is released during unloading and transportation of raw materials (dolomite, basalt), enters the atmospheric air without purification. At the same time, particles with a size of up to 60 microns and up to 72 microns dominate in atmospheric air, respectively. The main characteristics of the dust necessary for the objective selection of dust-cleaning equipment are determined.

The Thermal Insulation Design for Refuge Chamber

2013 ◽  
Vol 805-806 ◽  
pp. 1542-1546
Author(s):  
Can Cai Wang ◽  
De Gong Chang
Keyword(s):  
Thermal Insulation ◽  
Thermal Protection ◽  
Heat Insulation ◽  
Cooling System ◽  
Mineral Wool ◽  
Theory Analysis ◽  
Closed Chamber ◽  
Heat Transfer Theory ◽  
Protection Capability ◽  
Layer Mineral

For provide outstanding thermal insulation capacity for the refuge chambers, this paper firstly put forward a 5 layer heat insulation structure for refuge chambers. Mineral wool and acrogel were used as the heat insulation materials because of their excellent heat insulation and fire resistance capability. Then the paper determined the thickness of each layer by theoretic analyze using heat transfer theory, and found two 10 mm layers of acrogel and a 62mm layer mineral wool were ideal thickness. Then the paper designed the cooling system, according the heat analysis. And found the ice cake was best fit for refuge chambers, but it must equip with air flue to keep the enclosed air flowing. At last, 8 people were employed in the closed chamber for 106 hours, and raised outside temperature to 55°C for 5 hours. The chambers inside temperature was most controlled under 35°C. Then the paper increased the thickness of acrogel layer according to the experiment results at last. Theory analysis and experiment show that the designed heat insulation structure and cooling system had an excellent thermal protection capability.

Experimental Study on the Thermal Conductivity of Thermal Insulation Materials Used in Residential Buildings

2014 ◽  
Vol 1025-1026 ◽  
pp. 535-538
Author(s):  
Young Sun Jeong
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Building Materials ◽  
Residential Buildings ◽  
Building Envelope ◽  
Expanded Polystyrene ◽  
Exterior Wall ◽  
Insulation Materials ◽  
Design Documents ◽  
Materials Used

The most basic way to keep comfortable indoor environments for a building’s occupants and save energy for space heating and cooling in residential buildings is to insulate the building envelope. Among the building materials to be used, thermal insulation materials primarily influence thermal performance. In particular, the type, thermal conductivity, density, and thickness of heat insulator, are important factors influencing thermal insulation performance. We investigate the design status of residential buildings which were designed in accordance with the building code of Korea and selected the type of thermal insulation materials applied to the walls of buildings. The present study aims at measuring the thermal conductivity of thermal insulation materials used for building walls of residential buildings. In this study, after collecting the design documents of 129 residential buildings, we investigated the type and thickness of insulation materials on the exterior wall specified in the design documents. As the thermal insulation materials, extruded polystyrene (XPS) board and expanded polystyrene(EPS) board are used the most widely in Korea when designing residential buildings. The thickness of thermal insulation materials applied to the exterior wall was 70mm, most frequently applied to the design. We measured the thermal conductivity and the density of XPS board and EPS board. When the density of XPS and EPS was 30~35 kg/㎥, the thermal conductivity of XPS was 0.0292 W/mK and it of EPS was 0.0316 W/mK.

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