The effective thermal conductivity of insulation materials reinforced with aluminium foil at low temperatures

Yüksel, Numan; Avcı, Atakan; Kılıç, Muhsin

doi:10.1007/s00231-012-1001-2

Cited by 15 publications

(10 citation statements)

References 17 publications

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“…Из более современных подходов следует отметить работы Формалева В.Ф. [5][6][7], нацеленные на определении теплофизических параметров анизотропных сред с помощью минимизации функционала невязки на основе программных средств. Последнее требует от экспериментатора как определенных ресурсов для их реализации, так и достаточно высоких навыков работы с прикладными программами.…”

Section: методы измерений и состояние проблемыunclassified

“…Заявленные значения теплофизических параметров иногда вызывают сомнения, поскольку могут сильно отличаться по данным разных источников, или полностью отсутствовать. Также авторы не всегда сообщают о характеристиках предлагаемого материала, например, дисперсности, структуре, их температурных зависимостях и т. д. В результате расширения спектра материалов появляются новые методы измерения теплофизических параметров, которые отличаются временем и точностью измерения, разновидностями исследуемых образцов и диапазонами температур [1][2][3][4][5][6][7].…”

Section: Introductionunclassified

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Численное Решение Задачи Определения Температурной Зависимости Теплофизических Параметров Твердых Сред

Obukhov¹,

Новикова²,

Лебедев³

et al. 2020

Журнал Технической Физики

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Two different approaches for determining of thermophysical properties of the material under study are considered. The necessary experimental data on the thermal curves were derived from a simulation of the heat propagation process based on the numerical solution of the one-dimensional problem of the heat conduction equation. The values of these coefficients of thermal conductivity and thermal diffusivity are calculated independently from each other according to the proposed methods. The result of the study mares it possible to estimate the error of the obtained parameters due to comparison with the data included in simulation. The presented technique gives a qualitative and quantitative representation of the thermophysical properties of materials.

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Section: методы измерений и состояние проблемыunclassified

Section: Introductionunclassified

Численное Решение Задачи Определения Температурной Зависимости Теплофизических Параметров Твердых Сред

Obukhov¹,

Новикова²,

Лебедев³

et al. 2020

Журнал Технической Физики

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“…The input values are the heat power Q, the temperature differential across the specimen (T hot − T cold ), the specimen thickness (Δx), and the heat transfer area (center metered area, A). The thermal conductivity is computed by measuring the quantity of heat input under the steady-state temperature profile in the entire specimen [1,3,14]. From the measured input values, the effective thermal conductivity can be calculated using the following unidirectional steady-state heat transfer equation:…”

Section: Principle Of Operationmentioning

confidence: 99%

“…(1). These methods depend on Fourier-Biot law of heat conduction [1,3,14]. Its modified equation forms can be used for one-dimensional steady heat flow across different sizes, such as plate, cylinder, and sphere.…”

Section: Principle Of Operationmentioning

confidence: 99%

“…There are a number of methods to measure thermal conductivity. In general, there are two basic techniques for measuring thermal conductivity: steady-state methods and transient or non-steady-state methods [1,3]. Each of these methods is suitable for a limited range of materials, and they are based on the fundamental laws of heat conduction and electrical analogy.…”

Section: Introductionmentioning

confidence: 99%

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The Review of Some Commonly Used Methods and Techniques to Measure the Thermal Conductivity of Insulation Materials

Yüksel¹

2016

Insulation Materials in Context of Sustainability

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The use of insulation materials is considered as one of the most effective means of conserving energy in various fields. Thermal insulation materials enable systems to achieve energy efficiency. Many different thermal insulation materials have been developed to reduce heat flow by limiting conduction, convection, and/or radiation while performing one or more functions. These functions may vary in the context of thermal design, numerical simulations, and a wide range of engineering problems, such as determining the heat loss, temperature field, isolation, and cooling conservation, and in a variety of other technologies. One of the most effective ways to identify and determine performance is effective thermal conductivity. The thermal measurement performance is usually evaluated in a temperature and signal gradient for single or combined homogeneous/heterogenous materials. The two main categories of thermal conductivity measurement techniques are steady-state methods and transient methods. The aim of this chapter is to present various measurement methods and to investigate their suitability for method purposes. This chapter presents new and accurate experimental techniques and methods for measuring the thermal conductivity of several most commonly used insulation materials. Some of these methods are commonly used in the field for measuring the thermal property of insulation materials. On the other hand, different insulation measurement practices are presented depending upon the overall structures. The analysis predicting the thermal conductivities of insulation materials is also discussed.

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Investigation of New Insulation Materials for Environmentally-Benign Food Delivery Bags

Hasan

Dinçer

2019

Environmentally-Benign Energy Solutions

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The effective thermal conductivity of insulation materials reinforced with aluminium foil at low temperatures

Cited by 15 publications

References 17 publications

Численное Решение Задачи Определения Температурной Зависимости Теплофизических Параметров Твердых Сред

Численное Решение Задачи Определения Температурной Зависимости Теплофизических Параметров Твердых Сред

The Review of Some Commonly Used Methods and Techniques to Measure the Thermal Conductivity of Insulation Materials

Investigation of New Insulation Materials for Environmentally-Benign Food Delivery Bags

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