Measuring solid material’s thermo-physical properties wtih non-stationary hot wired method
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Based on the in-depth analysis of the basic principle of non-stationary parallel hot wire method and existing measuring standards, with the foundation of heat transfer differential mathematical model of hot wire in cylindrical coordinates, research is made on the measurement method of solid materials’ thermal conductivity and thermal diffusivity. The temperature measuring points, which are originally arranged in parallel with hot wire, are changed to specimen thickness direction. Combined with computer programming, Numerical algorithms are used to directly measure the materials’ thermal conductivity and thermal diffusivity without looking up the table. It analyzes in detail the effect of heat penetration on measurement results, explores treatment measures, and then develops a device for thermo-physical properties measurement. Measuring experiments are conducted on thermo-physical properties of glass, asbestos, diatomite bricks and others, and the experimental results are in close compliance with individual thermo-physical properties tester and literature values, with less than 5% of relative error.
Abstract
Based on the in-depth analysis of the basic principle of non-stationary parallel hot wire method and existing measuring standards, with the foundation of heat transfer differential mathematical model of hot wire in cylindrical coordinates, research is made on the measurement method of solid materials’ thermal conductivity and thermal diffusivity. The temperature measuring points, which are originally arranged in parallel with hot wire, are changed to specimen thickness direction. Combined with computer programming, Numerical algorithms are used to directly measure the materials’ thermal conductivity and thermal diffusivity without looking up the table. It analyzes in detail the effect of heat penetration on measurement results, explores treatment measures, and then develops a device for thermo-physical properties measurement. Measuring experiments are conducted on thermo-physical properties of glass, asbestos, diatomite bricks and others, and the experimental results are in close compliance with individual thermo-physical properties tester and literature values, with less than 5% of relative error.
참고문헌 (19)
- Xiao H J, "Thermal conductivity measurement of materials based on a transient hot-plane method", J Univ Sci Technol Beijing, 34(12), pp.1432~1436 (2012)
- Zhao D G, "Estimating model of specific heat of interm etallics", Journal of Beijing University of Science and Technology, 32(5), pp.565~568 (2010)
- Grace T C, "Rigid foam polyurethane (PU) derived from castor oil (Ricinus communis) for thermal insulation in roof systems", Frontiers of Architectural Research, 4(1), pp.348~356 (2012)
- Zhang Y J, "Measurement of thermal conductivity of carbon (or silicon carbide) containing refractory material", Refractory materials, 41(2), pp.156~158 (2007)
- Krichler M, "Thermal conductivity measurements on ferrofluids with special reference to measuring arrangement", Journal of Magnetism and Magnetic Materials, 326(1), pp.85~90 (2013)
- Su Y K, "Precise measurement of thermal conductivity of liquid over a wide temperature range using a transient hot-wire technique by uncertainty analysis", Thermochimica Acta, 542(8), pp.18~23 (2012)
- Wilson Nunes dos Santos, "Thermal properties of melt polymers by the hot wire technique", Polymer Testing, 24, pp.932~941 (2005)
- Noushin Amini, "Experimental study of bypass flow in near wall gaps of a pebble bed reactor using hot wire anemometry technique", Annals of Nuclear Energy, 65(3), pp.60~71 (2014)
- José M. Ortiz de Zárate, "Measurement of the thermal conductivity of clays used in pelotherapy by the multicurrent hot-wire technique", Applied Clay Science, 50(3), pp.423~426 (2010)
- Xiao X, "Thermal characterization of nitrates and nitrates", expanded graphite mixture phase change materials for solar energy, 2013, pp.73(9), 86~94
- General Administration of Quality Supervision, Inspection and Quarantine of the People’s Republic of China, "GB", T 5990-2006 Refractory materials-determination of thermal conductivity-hot-wire method, 2006
- T 10297-1998 Test method for thermal conducti-vity of nonmetal solid materials by hot-wire method, "GB", pp.1998, The State Bureau of Quality and Technical Supervision
- Deboer J., "The hot-wire technique for the determination of high thermal conductivity", Refract, 22, pp.512~517 (1980)
- Yu F, "review of the measurement of thermo-physical properties of materials by transient method", Journal ofAstronautic Metrology and Measurement, 26(4), pp.23~29 (2006)
- Chen Q H, "Measurements of thermal", Journal of China University of Mining & Technology, 38(3), pp.336~340 (2009)
- Luo X Q, "Investigation on transient measurement of thermal conductivity and thermal diffusion by thermal line method", Journal of Sichuan Normal University (Natural Science), 36(5), pp.792~794 (2013)
- Yang S M, "Heat Transfer" (2006), High Education Press
- Zhu F Y, "Well function and its series expansion", Journal of Daqing Petroleum Institue, 18(1), pp.114~116 (1994)
- Zhou J M, "Thermal physical property of refractory material measured by plane heat source method with constant heat rate", Journal of Central South University (Science and Technology), 42(5), pp.1467~1472 (2011)