NPL Vacuum Guarded Hot-Plate for Measuring Thermal Conductivity and Total Hemispherical Emittance of Insulation Materials

Stacey, Clark

doi:10.1520/stp11009s

Cited by 4 publications

(2 citation statements)

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“…The experimental results show that when the sample thickness is between 50 mm and 75 mm, the uncertainty of the device is within 1.3%-2.4%. Subsequently, NPL developed a high-temperature automatic testing device which can be used to measure the thermal resistance of 0.5-3.2 m 2 K W −1 samples at 100 °C-850 °C [19]. The National Institute Of Standards and Technology (NIST) also developed a GHP-method device with a measurement temperature range of 90-900 K, a thickness of less than 110 mm and a diameter of 500 mm.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on effective thermal conductivity of building insulation materials

Yan

Shen

Luo

et al. 2019

Meas. Sci. Technol.

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In this paper, effective thermal conductivity of new and high-performance building insulation materials, e.g. polystyrene board, plastic extruded board and polyurethane, is measured at a temperature range of 283–318 K, based on a guarded hot plate method. Further, measurement uncertainties are analyzed systematically. It indicates that the best measurement condition for building insulation materials is around 20 K temperature difference between hot plate and cold plate, under which an assuring uncertainty of 1% is captured. Furthermore, the measurement results are verified against open literature data and values recorded by the transient hot-wire method, and they are found to be in good agreement.

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Section: Introductionmentioning

confidence: 99%

Experimental study on effective thermal conductivity of building insulation materials

Yan

Shen

Luo

et al. 2019

Meas. Sci. Technol.

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“…The guarded hot-plane method [1][2][3] is suitable for measuring the isotropic thermal insulation material, and it needs large samples in the process of measurement. The hot-wire method [4][5][6] and the hot-strip method [7][8][9] are usually applied to measure the thermal conductivity of homogeneous and isotropic materials.…”

Section: Introductionmentioning

confidence: 99%

A small-plane heat source method for measuring the thermal conductivities of anisotropic materials

Cheng

Yue

Wang

et al. 2017

Meas. Sci. Technol.

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A new small-plane heat source method was proposed in this study to simultaneously measure the in-plane and cross-plane thermal conductivities of anisotropic insulating materials. In this method the size of the heat source element is smaller than the sample size and the boundary condition is thermal insulation due to no heat flux at the edge of the sample during the experiment. A three-dimensional model in a rectangular coordinate system was established to exactly describe the heat transfer process of the measurement system. Using the Laplace transform, variable separation, and Laplace inverse transform methods, the analytical solution of the temperature rise of the sample was derived. The temperature rises calculated by the analytical solution agree well with the results of numerical calculation. The result of the sensitivity analysis shows that the sensitivity coefficients of the estimated thermal conductivities are high and uncorrelated to each other. At room temperature and in a high-temperature environment, experimental measurements of anisotropic silica aerogel were carried out using the traditional one-dimensional plane heat source method and the proposed method, respectively. The results demonstrate that the measurement method developed in this study is effective and feasible for simultaneously obtaining the in-plane and cross-plane thermal conductivities of the anisotropic materials.

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High-Performance Vacuum Insulation Panel: Development of Alternative Core Materials

et al. 2008

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. For the publisher's version, please access the DOI link below./ Pour consulter la version de l'éditeur, utilisez le lien DOI ci-dessous.http://dx.doi.org/10.1061/(ASCE) 0887-381X(2008)22:4(103) Journal of Cold Regions Engineering, 22, 4, pp. 103-123, 2008-12-01 High performance vacuum insulation panel: development of alternative core materials Mukhopadhyaya, P.; Kumaran, M. K.; Normandin, N.; van Reenen, D.; Lackey, J. C. 2008-11-19A version of this document is published in / Une version de ce document se trouve dans: Journal of Cold Regions Engineering, v. 22, no. 4, 2008, pp. 103-123 The material in this document is covered by the provisions of the Copyright Act, by Canadian laws, policies, regulations and international agreements. Such provisions serve to identify the information source and, in specific instances, to prohibit reproduction of materials without written permission. Construction (IRC) is investigating a number of fundamental aspects related to the performance and construction of VIP, which this paper discusses. More specifically, it reviews the underlying basics behind the functioning of VIPs and presents results from the investigation into the development of alternative core materials for VIP construction.

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NPL Vacuum Guarded Hot-Plate for Measuring Thermal Conductivity and Total Hemispherical Emittance of Insulation Materials

Cited by 4 publications

References 0 publications

Experimental study on effective thermal conductivity of building insulation materials

Experimental study on effective thermal conductivity of building insulation materials

A small-plane heat source method for measuring the thermal conductivities of anisotropic materials

High-Performance Vacuum Insulation Panel: Development of Alternative Core Materials

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