Effective thermal conductivity of water-saturated sintered powder-metal plates
Tóm tắt
An experimental apparatus and related procedures for the determination of the effective thermal conductivity of sintered powder-metal plates saturated with distilled water at temperatures in the range 20–150°C are discussed. The apparatus and procedures are applied to two samples of sintered powder-metal plates, one made of nickel 200 and the other of stainless steel 316, with porosities of 28.10 and 46.45%, respectively, and each of nominal dimensions 127 mm × 127 mm × 6.35 mm. The experimental results are compared with corresponding predictions yielded by several correlations available in the literature. The correlations based on experimental data for packed beds of spherical particles and also porous plates made of cold-pressed (but not sintered) particles of angular shapes do not apply well to sintered powder-metal plates. A new correlation, which is based on extensions of ideas contained in earlier works and provides improved predictions, is proposed.
Tài liệu tham khảo
Alazmi B, Vafai K (2000) Analysis of variants within the porous media transport models. ASME J Heat Transf 122:303–326
Alexander EJ Jr (1972) Structure–property relationships in heat pipe wicking materials. Ph.D. Thesis, North Carolina State University, Dept. of Chemical Engineering, North Carolina
ASHRAE Standard 41.5-75 (1976) Standard measurement guide: engineering analysis of experimental. The American society of heating, refrigerating, and air-conditioning engineers, Inc.
Atabaki N (2006) Experimental and computational studies of loop heat pipes. Ph.D. Thesis, McGill University, Deptarment of Mechanical Engineering, Montreal
Atabaki N, Baliga BR (2003) Steady-state operation of a loop heat pipe: network thermofluid model and results. In: Proceedings of ASME international mechanical engineering congress& exposition, paper # IMECE2003-43968, Washington DC, November 16–21
Bahrami M, Yovanovich MM, Culham JR (2004) Compact analytical models for effective thermal conductivity of rough spheroid packed beds. In: Proceedings of ASME international mechanical engineering congress, Anaheim, CA, November 13–19
Batchelor GK, O’Brien RW (1977) Thermal or electrical conduction through a granular material. Proc R Soc Lond A 355:313–333
Bauer TH (1993) A general analytical approach toward the thermal conductivity of porous media. Int J Heat Mass Transf 36:4181–4191
Boomsma K, Poulikakos D (2001) On the effective thermal conductivity of a three dimensionally structured fluid-saturated metal foam. Int J Heat Mass Transf 44:827–836
Calmidi VV, Mahajan RL (1999) The effective thermal conductivity of high porosity fibrous metal foams. ASME J Heat Transf 121:466–471
Chen CK, Tien CL (1973) Conductance of packed sphere in vacuum. ASME J Heat Transf 95:302–308
Chi SW (1976) Heat pipe theory and practice: a sourcebook. Hemisphere, New York
Dul’nev GN (1965) Heat transfer through solid disperse systems. J Eng Phys 9:275–279
Dunn P, Reay DA (1982) Heat pipes, 3rd edn. Pergamon Press, New York
Faghri A (1995) Heat pipe science and technology. Taylor & Francis, Washington DC
Hadley GR (1986) Thermal conductivity of packed metal powders. Int J Heat Mass Transf 29:909–920
Hsu CT (2000) Heat conduction in porous media. In: Vafai K (eds) Handbook of porous media. Chap 4. Marcel Dekker, New York, pp 171–200
Hsu CT, Cheng P, Wong KW (1995) A lumped-parameter model for stagnant thermal conductivity of spatially periodic porous media. ASME J Heat Transf 117:264–269
Incropera FP, DeWitt DP (1996) Fundamentals of heat and mass transfer, 4th edn, Wiley, New York
Kaviany M (1995) Principles of heat transfer in porous media. Springer, New York
Kunii D, Smith JM (1960) Heat transfer characteristics of porous rock. AIChE J 6:71–78
Kunz HR, Langston LS, Hilton BH, Wyde SS, Nashick GH (1967) Vapor-chamber fin studies: transport properties and boiling characteristics of wicks. NASA-CR-812
Leong KC, Liu CY, Lu GQ (1997) Characterization of sintered copper wicks used in heat pipes. J Porous Mater 4:303–308
Mantel WJ, Chang WS (1991) Effective thermal conductivity of sintered metal fibers. J Thermophys 5:545–549
Maxwell JC (1954) A treatise on electricity and magnetism, 3rd edn., vol. 1. Dover, New York, (reprinted version of original printed by Oxford University Press in 1891)
Maydanik YF (2006) Loop heat pipes—theory, experimental developments and application. In: Proceedings of 13th international heat transfer conference, Keynote Address# KN-19, Sydney, Australia, August 13–18
Minkowycz WJ, Haji-Sheikh A, Vafai K (1999) On departure from local equilibrium in porous media due to rapidly changing heat source: the sparrow number. Int J Heat Mass Transf 42:3373–3385
Nield DA, Bejan A (2006) Convection in porous media, 3rd edn. Springer, New York
Ofuchi K, Kunii D (1965) Heat-transfer characteristics of packed beds with stagnant fluids. Int J Heat Mass Transf 8:749–757
Ogniewicz Y, Yovanovich MM (1978) Effective conductivity of liquid-saturated porous beds of spheres: basic cell model with constriction. Prog Astronaut Aeronaut 60:209–228
Oosthuizen PH, Naylor D (1999) An introduction to convective heat transfer analysis. McGraw-Hill, New York
Peterson GP, Fletcher LS (1987) Effective thermal conductivity of sintered heat pipes wicks. J Thermophys 1(4):343–347
Prasad V, Kladias N, Bandopadhaya A, Tian Q (1989) Evaluation of correlations for stagnant thermal conductivity of liquid-saturated porous beds of spheres. Int J Heat Mass Transf 32:1793–1796
Press WH, Teukolsky SA, Vetterling WT, Flannery BP (1992) Numerical recipes in FORTRAN, 2nd edn. Cambridge University Press, London
Sangani AS, Acrivos A (1983) The effective conductivity of a periodic array of spheres. Proc R Soc Lond A 386:263–275
Silverstein CC (1992) Design and technology of heat pipes for cooling and heat exchange. hemisphere publishing corporation, Taylor & Francis, Washington DC
Singh BS, Dybbs A, Lyman FA (1973) Experimental study of the effective thermal conductivity of liquid saturated sintered fiber metal wicks. Int J Heat Mass Transf 16:145–155
Tavman IH (1996) Effective thermal conductivity of granular porous materials. Int Commun Heat Mass Transf 23:169–176
Touloukian YS, Powell RW, Ho CY, Klemens PG (1970) Thermal conductivity, metallic elements and alloys. In: Thermophysical properties of matter, vol 1. Purdue Research Foundation, Plenum Publishing Corporation, New York
Tsotsas E, Martin H (1987) Thermal conductivity of packed beds: a review. Chem Eng Prog 22:19–37
Van Wylen GJ, Sonntag RE, Borgnakke C (1994) Fundamentals of classical thermodynamics, 4th edn. SI Version. Wiley, New York
Whitaker S (1999) The method of volume averaging, Kluwer Academic, Dordecht