Effects of thermal efficiency in DCMD and the preparation of membranes with low thermal conductivity
文献类型：期刊论文
| 作者 | Li, Zhehao1; Peng, Yuelian2; Dong, Yajun2; Fan, Hongwei2; Chen, Ping3; Qiu, Lin4; Jiang, Qi5 |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2014-10-30 |
| 卷号 | 317期号:1页码:338-349 |
| 关键词 | Membranes distillation Mathematical simulation Thermal conductivity Thermal efficiency 3 omega technique |
| 英文摘要 | The effects of the membrane characteristics and operational conditions on the vapor flux and thermal efficiency in a direct contact membrane distillation (DCMD) process were studied with a mathematical simulation. The membrane temperature, driving force of vapor transfer, membrane distillation coefficient, etc. were used to analyze the effects. The operating conditions that increased the vapor flux improved the thermal efficiency. The membrane characteristics of four microporous membranes and their performances in DCMD were compared. A polysulfone (PSf) membrane prepared via vapor-induced phase separation exhibited the lowest thermal conductivity. The PSf and polyvinylidene difluoride (PVDF) membranes were modified using SiO2 aerogel blending and coating to reduce the thermal conductivity of the membrane. The coating process was more effective than the blending process toward this end. The changes in the structure of the modified membrane were observed with a scanning electron microscope. Si was found on the modified membrane surface with an energy spectrometer. The PVDF composite and support membranes were tested during the DCMD process; the composite membrane had a higher vapor flux and a better thermal efficiency than the support. A new method based on a 3o) technique was used to measure the thermal conductivity of the membranes. (C) 2014 Elsevier BY. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| 研究领域[WOS] | Chemistry ; Materials Science ; Physics |
| 关键词[WOS] | HOLLOW-FIBER MEMBRANES ; INDUCED PHASE-SEPARATION ; CROSS-LINKED MEMBRANE ; DISTILLATION PROCESS ; SEAWATER DESALINATION ; MASS-TRANSFER ; TRANSPORT ; HYDROPHOBICITY ; PERFORMANCE ; SIMULATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000344379900046 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/106026]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | 1.Changchun Gold Res Inst, Changchun 130012, Peoples R China 2.Beijing Univ Technol, Coll Environm & Energy Engn, Dept Chem & Chem Engn, Beijing 100124, Peoples R China 3.North China Pharmaceut Grp Corp, Res Inst Environm Protect, Changchun 050015, Peoples R China 4.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China 5.MEP, Natl Major Sci & Technol Program, Management Off Water Pollut Control & Treatment, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhehao,Peng, Yuelian,Dong, Yajun,et al. Effects of thermal efficiency in DCMD and the preparation of membranes with low thermal conductivity[J]. APPLIED SURFACE SCIENCE,2014,317(1):338-349. |
| APA | Li, Zhehao.,Peng, Yuelian.,Dong, Yajun.,Fan, Hongwei.,Chen, Ping.,...&Jiang, Qi.(2014).Effects of thermal efficiency in DCMD and the preparation of membranes with low thermal conductivity.APPLIED SURFACE SCIENCE,317(1),338-349. |
| MLA | Li, Zhehao,et al."Effects of thermal efficiency in DCMD and the preparation of membranes with low thermal conductivity".APPLIED SURFACE SCIENCE 317.1(2014):338-349. |
入库方式： OAI收割
来源：工程热物理研究所
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