Influence of measurement parameters of laser flash analysis on the observed thermal diffusivity and the choice of parameters to get repeatable measurements

被引：0
作者：
Tanya Agarwal
机构：
[1] Fraunhofer Institute for Solar Energy Systems,
来源：
Journal of Thermal Analysis and Calorimetry | 2018年 / 134卷
关键词：
Phase change materials; PCM; LFA; Laser flash; Thermal conductivity; Thermal diffusivity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Sugar alcohols are food grade, low cost and have very high latent heat capacities. They are therefore an attractive candidate for energy storage applications. However, to be able to utilize their potential, thermal conductivity is an important constraint. Laser flash analysis (LFA 447) was used for the measurement of thermal diffusivity. Influence of sample thickness, measurement time, voltage, pulse width and choice of curve fitting model on the measured thermal diffusivity values is studied. These parameters are then carefully chosen to ensure repeatability in the diffusivity measurement of sugar alcohols. Diffusivity results obtained using these criteria for several sugar alcohols are found to be in good agreement with consecutive measurements.
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页码：1183 / 1203
页数：20
相关论文
共 116 条
  • [1] Parker WJ(1961)Thermal diffusivity measurements using the flash technique J Appl Phys 32 1679-1460
  • [2] Jenkins RJ(1963)Pulse method of measuring thermal diffusivity at high temperatures J Appl Phys 34 926-283
  • [3] Butler CP(1963)Temperature and finite pulse-time effects in the flash method for measuring thermal diffusivity J Appl Phys 34 1909-71
  • [4] Abbott GL(1973)Finite pulse-time and heat-loss effects in pulse thermal diffusivity meassurements J Appl Phys 44 1455-72
  • [5] Cowan RD(1975)Radiation loss in the flash method for thermal diffusivity J Appl Phys 46 714-634
  • [6] Cape JA(1970)The measurement of thermal diffusivity by the flash method. An investigation into errors arising from the boundary conditions Rev Int Hautes Temp Refract 7 178-118
  • [7] Lehman GW(1976)Corrections for nonuniform surface heating errors in flash method thermal diffusivity measurements J Appl Phys 47 1668-33
  • [8] Heckman RC(1974)Finite pulse time effect in flash diffusivity method High Temp High Press 6 65-1452
  • [9] Clark LM(2010)Analysis of influence of measurement conditions on repeatable results of thermal diffusivity of ceramic moulds designed for manufacturing the superalloys castings IOP Conference Series: Materials Science and Engineering 15 012064-135
  • [10] Taylor RE(2005)Polym Test Thermal iffusivity of polymers by the laser flash technique 24 628-669
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