Dissertation > Excellent graduate degree dissertation topics show

Study on Effective Thermal Conductivity of Two-Phase Granular Porous Materials

Author: ZhengChunZuo
Tutor: LiuXiaoYan
School: Daqing Petroleum Institute
Course: Thermal Power Engineering
Keywords: Two-phase particles of porous materials Thermal conductivity Power and hot-wire method Porosity Model Updating
CLC: TB383.4
Type: Master's thesis
Year: 2010
Downloads: 107
Quote: 0
Read: Download Dissertation

Abstract


More than 50% of the industrial products and intermediate products grainy , while most solid - gas two-phase particles of porous materials - based . Solid - gas two-phase prediction of the thermal conductivity of the particles of porous materials , not yet see its prediction model to analyze and verify the accuracy of the relevant literature experimental data . In this paper, the effective thermal conductivity of porous materials at home and abroad on the basis of the study , from both theoretical analysis and experimental study on the effective thermal conductivity of solid - gas two-phase particles of porous materials , mainly includes the following aspects : 1 , the use of density determination of the typical solid - gas two-phase particle porosity of the porous material , and the use of domestic and fitting of experimental data to the sample being tested by gas the purely thermal conductivity of the solid-phase material ; 2, the system introduces the effective thermal conductivity of the porous material test methods analysis of the hot-wire method and the principle of power and hot-wire method , set up the test apparatus of power and hot-wire method and determination of the effective thermal conductivity of quartz sand, silicon carbide, construction sand and ash , and use of the device . The test results show that the porosity within the range of the test , the effective thermal conductivity decreases with the increase of the material porosity and ; 3, the pilot testing apparatus Uncertainty Analysis calculated for . The results show that : the test of maximum uncertainty of ± 0.0070 W / ( m · K ) , a minimum of ± 0.0030 W / (m · K), the test has a high test accuracy ; introduced seven forecast porous material effective thermal conductivity model , the test results with the predicted results were analyzed . The results show that the best Kunii and Smith model consistent with the experimental values ??, error minimization ; 5, considering the influence of the porosity of the effective thermal conductivity of the measured material data using the least squares method of curve fitting , Kunii and Smith model correction given new forecasting model ; 6, foreign scholars measured test data with the new forecast model predictions were compared . The results showed that : Kunii and Smith revised model accuracy is higher .

Related Dissertations

  1. Recycled aggregate semi- rigid concrete preparation and molding of test,TU528
  2. Study of the Upper Paleozoic Reservoir in Jingbian Gas Field,P618.13
  3. Study on the Dynamic Thermal Test Device of Sprinklers,TU892
  4. The Experimental Research on Measurement of Thermal Contact Resistance of Two Contacted Solids and Thermal Conductivity,TK124
  5. Mine -scale coal bed temperature distribution law of,TD727
  6. Variable conditions in orbit, the spacecraft solar wing thermal - structural analysis,V442
  7. High thermal conductivity epoxy composites and Research,TB332
  8. Crossover model based on improved cross- modal Damage Identification Method,TU312.3
  9. Study on Temperature Effect of Porous Cement Concrete Pavement,U416.216
  10. Study on Pavement’s Waterproofness of Concrete Bridge,U443.33
  11. Asphalt Mixture Design of Noise Reduction Enviroment-friendly Tunnel Pavement,U414
  12. Study on the Design Parameters and Noise-reduced Performance of the Open Graded Asphalt Friction Course (OGFC),U414
  13. Study on the Seasonal Frozen Roadbed Temperature and Deformation of Kangding Section of Sichuan-Tibet Highway,U416.1
  14. Research on Thermal Physical Parameters of Asphalt Mixture,U414
  15. Research on Material Properties and Pavement Structure Design of Porous Cement Concrete with Drainage and Noise Reduction,U416.2
  16. Model Test on Vehicle-Bridge Couped Vibration for the Long-span Bridge with High-pier,U441.3
  17. Two-dimensional Image Analysis and Property Investigations of Cancellous Bone Microstructure,R318.08
  18. The Design and Quality Standard Studies of Amitriptyline Hydrochloride Controlled Porosity Osmotic Pump Tablets,R94
  19. A Study on Moso-bamboo Soil Water Conservation and Biomass in Huitong County Hunan Province,S714
  20. Structural Dynamic Model Updating and Damage Identification Based on the Improved PSO Algorithm,O346.5
  21. Study on Surrouding Rock Thermal Couductivity Experiment and Distribution of Temperature Field in Deep Roadway,TD727

CLC: > Industrial Technology > General industrial technology > Materials science and engineering > Special structural materials
© 2012 www.DissertationTopic.Net  Mobile