SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2013, Vol. 21 ›› Issue (6): 676-682.DOI: 10.1016/S1004-9541(13)60525-X

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Comparison on Thermal Conductivity and Permeability of Granular and Consolidated Activated Carbon for Refrigeration

JIN Zhequan, TIAN Bo, WANG Liwei, WANG Ruzhu   

  1. Institute of Refrigeration and Cryogenics, Key Laboratory for Power Machinery and Engineering of M.O.E, Shanghai Jiao Tong University, Shanghai 200240, China
  • Received:2011-03-03 Revised:2012-11-27 Online:2013-07-03 Published:2013-06-28
  • Contact: WANG Liwei
  • Supported by:

    Supported by the National Science Foundation for Excellent Young Scholars (51222601), the International Collaborating Project Funded by the Foundation of Science and Technology Commission of Shanghai Municipality (11160706000), the Program for New Century Excellent Talents in University by the Ministry of Education of China and the Shanghai Pujiang Program of China.

Comparison on Thermal Conductivity and Permeability of Granular and Consolidated Activated Carbon for Refrigeration

金哲权, 田波, 王丽伟, 王如竹   

  1. Institute of Refrigeration and Cryogenics, Key Laboratory for Power Machinery and Engineering of M.O.E, Shanghai Jiao Tong University, Shanghai 200240, China
  • 通讯作者: WANG Liwei
  • 基金资助:

    Supported by the National Science Foundation for Excellent Young Scholars (51222601), the International Collaborating Project Funded by the Foundation of Science and Technology Commission of Shanghai Municipality (11160706000), the Program for New Century Excellent Talents in University by the Ministry of Education of China and the Shanghai Pujiang Program of China.

Abstract: This paper focuses on the development of three types of activated carbon (AC) adsorbents, i.e. granular AC, consolidated AC with chemical binder, and consolidated AC with expanded natural graphite (ENG). Their thermal conductivity was investigated with the steady-state heat source method and the permeability was tested with nitrogen as the gas source. Results show that the thermal conductivity of granular AC with different sizes almost maintains a constant at 0.36 W·(m·K)-1, while the value modestly increases to 0.40 W·(m·K)-1 for the consolidated AC with chemical binder. The consolidated AC with ENG at the density of 600 kg·m-3 shows the best heat transfer performance and their thermal conductivity vary from 2.08 W·(m·K)-1 to 2.61 W·(m·K)-1 according to its fraction of AC. However, the granular AC and consolidated AC with chemical binder show the better permeability performance than consolidated AC with ENG binder whose permeability changes from 6.98×10-13 m2 to 5.16×10-11 m2 and the maximum occurs when the content of AC reaches 71.4% (by mass). According to the different thermal properties, the refrigeration application of three types of adsorbents is analyzed.

Key words: adsorbent, activated carbon, expanded natural graphite, thermal conductivity, permeability

摘要: This paper focuses on the development of three types of activated carbon (AC) adsorbents, i.e. granular AC, consolidated AC with chemical binder, and consolidated AC with expanded natural graphite (ENG). Their thermal conductivity was investigated with the steady-state heat source method and the permeability was tested with nitrogen as the gas source. Results show that the thermal conductivity of granular AC with different sizes almost maintains a constant at 0.36 W·(m·K)-1, while the value modestly increases to 0.40 W·(m·K)-1 for the consolidated AC with chemical binder. The consolidated AC with ENG at the density of 600 kg·m-3 shows the best heat transfer performance and their thermal conductivity vary from 2.08 W·(m·K)-1 to 2.61 W·(m·K)-1 according to its fraction of AC. However, the granular AC and consolidated AC with chemical binder show the better permeability performance than consolidated AC with ENG binder whose permeability changes from 6.98×10-13 m2 to 5.16×10-11 m2 and the maximum occurs when the content of AC reaches 71.4% (by mass). According to the different thermal properties, the refrigeration application of three types of adsorbents is analyzed.

关键词: adsorbent, activated carbon, expanded natural graphite, thermal conductivity, permeability