Temperature and Composition Dependences of Thermal Conductivity, Thermal Diffusivity and Specific Heat of the PbO-SiO&lt;SUB&gt;2&lt;/SUB&gt; Glass System

Li, Futao; Susa, Masahiro; Nagata, Kazuhiro

doi:10.2320/jinstmet1952.55.2_194

Cited by 4 publications

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“…The thermal diffusivities in this work decrease with increasing measurement temperature from room temperature to 700 K, and increase progressively above 700 K. Values reported by Li et al 13) and Corning 14) show similar temperature dependencies. The specific heats increase from 723 J/kg · K at 294 K to 862 J/kg · K at 1 142 K. Kelley's values 15) agree well with the values obtained in this work.…”

Section: Validation Of the Improved Square-wave Pulsesupporting

confidence: 85%

“…Considering the facts that the numerically calculated back face temperature reproduces the monitored one with minute accuracy, that the variations of values measured by Li et al 13) shown in Fig. 8 are relatively large, and that specific heats and thermal conductivities obtained in this work almost agree with ones measured by the other methods, we concluded that the thermal properties of vitreous samples can be measured by the improved square-wave pulse heat method.…”

Section: Validation Of the Improved Square-wave Pulsesupporting

confidence: 76%

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Application of Square-wave Pulse Heat Method to Thermal Properties Measurement of CaO–SiO2–Al2O3 System Fluxes

2006

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The square-wave pulse heat method was improved to measure thermal properties of vitreous samples by considering radiation heat transfer between the front and back faces of the samples, and the measurement accuracy of the method was examined.Thermal properties of CaO-SiO 2 -Al 2 O 3 samples were measured by the method. Thermal diffusivities of the crystalline 40CaO-40SiO 2 -20Al 2 O 3 (mol%) sample are about 1.5-2.5 times larger than those of the vitreous sample. Specific heat of the crystalline and vitreous samples shows almost the same temperature dependency, except the highest measurement temperature due to crystallization of glass.Finally, we investigated the reason that the thermal conductivity values measured by the improved square-wave pulse heat method differ from those by the line source method. As a result, crystallization of glass during the measurements would cause the difference of the temperature dependencies of the values measured by the two methods.KEY WORDS: square-wave pulse heat method; thermal diffusivity; specific heat; thermal conductivity; slags.

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Section: Validation Of the Improved Square-wave Pulsesupporting

confidence: 85%

Section: Validation Of the Improved Square-wave Pulsesupporting

confidence: 76%

Application of Square-wave Pulse Heat Method to Thermal Properties Measurement of CaO–SiO2–Al2O3 System Fluxes

2006

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“…Nishioka et al [21] and Li et al [22] have measured the thermal conductivity of solid slags using square-wave pulse heat method and hot strip method separately over 296-1196 K and they found that the thermal conductivity slightly increased from 1 to 3 W/(m· K) with increasing temperature. The hot wire method has been proved a useful method to measure the thermal conductivity of liquid slags and Kang et al [23] and Nagata et al [24] have reported that thermal conductivity in slag melts ranges from 0.1 to 0.5 W/(m· K).…”

Section: Low Thermal Conductivitymentioning

confidence: 99%

Heat Recovery from High Temperature Slags: A Review of Chemical Methods

et al. 2015

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Waste heat recovery from high temperature slags represents the latest potential way to remarkably reduce the energy consumption and CO2 emissions of the steel industry. The molten slags, in the temperature range of 1723-1923 K, carry large amounts of high quality energy. However, the heat recovery from slags faces several fundamental challenges, including their low thermal conductivity, inside crystallization, and discontinuous availability. During past decades, various chemical methods have been exploited and performed including methane reforming, coal and biomass gasification, and direct compositional modification and utilization of slags. These methods effectively meet the challenges mentioned before and help integrate the steel industry with other industrial sectors. During the heat recovery using chemical methods, slags can act as not only heat carriers but also as catalysts and reactants, which expands the field of utilization of slags. Fuel gas production using the waste heat accounts for the main R&D trend, through which the thermal heat in the slag could be transformed into high quality chemical energy in the fuel gas. Moreover, these chemical methods should be extended to an industrial scale to realize their commercial application, which is the only way by which the substantial energy in the slags could be extracted, i.e., amounting to 16 million tons of standard coal in China. OPEN ACCESSEnergies 2015, 8 1918

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Energy Saving and Emission Reduction from the Steel Industry: Heat Recovery from High Temperature Slags

Sun

Zhang

2016

Lecture Notes in Energy

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Temperature and Composition Dependences of Thermal Conductivity, Thermal Diffusivity and Specific Heat of the PbO-SiO<SUB>2</SUB> Glass System

Cited by 4 publications

References 0 publications

Application of Square-wave Pulse Heat Method to Thermal Properties Measurement of CaO–SiO2–Al2O3 System Fluxes

Application of Square-wave Pulse Heat Method to Thermal Properties Measurement of CaO–SiO2–Al2O3 System Fluxes

Heat Recovery from High Temperature Slags: A Review of Chemical Methods

Energy Saving and Emission Reduction from the Steel Industry: Heat Recovery from High Temperature Slags

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