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  1. Artikel ; Online: Modeling comparison and theoretical study of mass transfer characteristics for desiccant coated air channel under isothermal dehumidification

    Liu, Lin / Huang, Hongyu / Li, Jun / Bai, Yu / Wu, Rongjun / He, Zhaohong / Deng, Lisheng / Kubota, Mitsuhiro / Kobayashi, Noriyuki

    Energy. 2023 July, v. 274 p.127332-

    2023  

    Abstract: Coupled heat and mass transfer phenomena are encountered in desiccant coated dehumidifier, and their numerical modeling is becoming indispensable. In this study, three conjugate heat and mass transfer models were compared to clarify the effects of ... ...

    Abstract Coupled heat and mass transfer phenomena are encountered in desiccant coated dehumidifier, and their numerical modeling is becoming indispensable. In this study, three conjugate heat and mass transfer models were compared to clarify the effects of interparticle mass transfer and local kinetic non-equilibrium on modeling accuracy, and the models were validated by experiment results of silica gel and FAM Z01 coated dehumidifiers with single one air channel. Furthermore, a parametric study on the separate mass transfer characteristics of the dehumidifier under isothermal dehumidification was conducted based on one of the improved models. Results demonstrated that the effect of interparticle mass transfer should be involved, while the local kinetic non-equilibrium tends to be considered for desiccants with steep isotherm shape. Parametric study revealed that as air velocity increases, both air- and solid-side mass transfer change significantly, while desiccant layer thickness, interparticle porosity and isotherm shape mainly affect solid-side mass transfer. The average mass transfer Biot numbers Bim of desiccant layer with relative low thickness of 0.1 mm under various parameters are in the same order of magnitude as 1, indicating that the mass transfer resistance on solid side cannot be ignored generally.
    Schlagwörter air ; dehumidification ; desiccants ; energy ; heat ; mass transfer ; porosity ; silica gel ; Isothermal dehumidification ; Water vapor adsorption ; Desiccant coated heat exchanger ; Numerical modeling
    Sprache Englisch
    Erscheinungsverlauf 2023-07
    Erscheinungsort Elsevier Ltd
    Dokumenttyp Artikel ; Online
    ZDB-ID 2019804-8
    ISSN 0360-5442 ; 0360-5442
    ISSN (online) 0360-5442
    ISSN 0360-5442
    DOI 10.1016/j.energy.2023.127332
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel ; Online: A laparoscopic radical inguinal lymphadenectomy approach partly preserving great saphenous vein branches can benefit for patients with penile carcinoma.

    Ma, Yongkang / Hao, Jianwei / Yin, Huaqi / Zhu, Mingkai / Guan, Bao / Zhu, Chaoshuai / Dong, Bingqi / Zhao, Shiming / He, Zhaohong / Yang, Tiejun

    BMC surgery

    2022  Band 22, Heft 1, Seite(n) 138

    Abstract: Background: Inguinal lymphadenectomy (iLAD) is effective for penile carcinoma treatment, but usually results in many complications. This study aims to clinically evaluate the feasibility and clinical significance of a laparoscopic radical iLAD approach ... ...

    Abstract Background: Inguinal lymphadenectomy (iLAD) is effective for penile carcinoma treatment, but usually results in many complications. This study aims to clinically evaluate the feasibility and clinical significance of a laparoscopic radical iLAD approach partly preserving great saphenous vein branches for penile carcinoma patients.
    Methods: A total of 48 patients with penile cancer who underwent laparoscopic radical iLAD with retention of the great saphenous vein in Henan Cancer Hospital from 2012 Jan to 2020 Dec were included in this study. Sixteen penile carcinoma patients who underwent laparoscopic radical iLAD preserving parts of superficial branches of the great saphenous vein were identified as the sparing group, and the matched 32 patients who incised those branches were identified as control group. This new procedure was performed by laparoscopy, preserving parts of superficial branches of the great saphenous vein, superficial lateral and medial femoral veins. Clinicopathological features and perioperative variables were recorded. Postoperative complications, including skin flap necrosis, lymphorrhagia, and lower extremity edema were analyzed retrospectively.
    Results: We found that the operative time of the sparing group is significantly longer than the control group (p = 0.011). There was no statistical difference in intraoperative blood loss, the lymph node number per side, average time to remove the drainage tube and postoperative hospital stay between the two groups. Compared to the control group, the sparing group showed a significantly decreased incidence of lower extremity edema (p = 0.018). The preservation of parts of superficial branches of the great saphenous vein was mainly decreased the incidence of edema below ankle (p = 0.034).
    Conclusions: This study demonstrated that the iLAD with preserving parts of superficial branches of the great saphenous vein, with a decreased incidence of postoperative complications, is a safe and feasible approach for penile cancer.
    Mesh-Begriff(e) Carcinoma/surgery ; Femoral Vein/pathology ; Humans ; Laparoscopy/methods ; Lymph Node Excision/methods ; Male ; Penile Neoplasms/surgery ; Postoperative Complications/epidemiology ; Retrospective Studies ; Saphenous Vein/pathology ; Saphenous Vein/surgery
    Sprache Englisch
    Erscheinungsdatum 2022-04-09
    Erscheinungsland England
    Dokumenttyp Journal Article
    ZDB-ID 2050442-1
    ISSN 1471-2482 ; 1471-2482
    ISSN (online) 1471-2482
    ISSN 1471-2482
    DOI 10.1186/s12893-022-01582-3
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  3. Artikel ; Online: The effect of 3D carbon nanoadditives on lithium hydroxide monohydrate based composite materials for highly efficient low temperature thermochemical heat storage.

    Li, Shijie / Huang, Hongyu / Li, Jun / Kobayashi, Noriyuki / Osaka, Yugo / He, Zhaohong / Yuan, Haoran

    RSC advances

    2018  Band 8, Heft 15, Seite(n) 8199–8208

    Abstract: Lithium hydroxide monohydrate based thermochemical heat storage materials were modified ... ...

    Abstract Lithium hydroxide monohydrate based thermochemical heat storage materials were modified with
    Sprache Englisch
    Erscheinungsdatum 2018-02-21
    Erscheinungsland England
    Dokumenttyp Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/c8ra00269j
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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  4. Artikel: Development of a compact MnO2 filter for removal of SO2 from diesel vehicle emissions

    Liu, Xuecheng / Osaka, Yugo / Huang, Hongyu / Li, Jun / He, Zhaohong / Yang, Xixian / Huhetaoli / Li, Shijie / Kobayashi, Noriyuki

    RSC advances. 2017 Mar. 27, v. 7, no. 30

    2017  

    Abstract: Increasing concern about sulfur dioxide (SO2) from diesel vehicle exhausts causing detrimental effects on NOx removal catalysts has resulted in the development of dry desulfurization filters for complete removal of SO2. In this study, a compact MnO2 ... ...

    Abstract Increasing concern about sulfur dioxide (SO2) from diesel vehicle exhausts causing detrimental effects on NOx removal catalysts has resulted in the development of dry desulfurization filters for complete removal of SO2. In this study, a compact MnO2 filter was developed for diesel emission control. The SO2-capture behavior of the compact MnO2 filter was investigated by using a volumetric device in a low temperature range (200–400 °C) and low SO2 pressure conditions. The maximal capacity of the MnO2 filter was 304.1 mgSO2 per gMnO2 at 400 °C. Based on the experimental results, the required volume of the MnO2 filter was estimated as only 0.6 L for a diesel car with 30 000 km distance traveled per year. The thickness of the MnO2 filter had significant influence on its SO2-capture performance. The sulfate reaction mechanism was also discussed by using a grain model under four reaction temperature conditions for improving the efficiency of the design of the desulfurization filter. The sulfate process can be divided into two control stages (the chemical reaction control stage and the solid diffusion control stage) and the prediction models fit the experimental data well for both control stages, indicating that the two-stage grain model is suitable for the sulfate reaction between the MnO2 filter and SO2. The calculated apparent activation energy of 18.8 kJ mol−1 indicates that the MnO2 filter exhibits high activity for SO2 adsorption in a pure SO2 atmosphere.
    Schlagwörter activation energy ; adsorption ; catalysts ; chemical reactions ; desulfurization ; filters ; manganese dioxide ; models ; nitrogen oxides ; particulate emissions ; reaction mechanisms ; sulfates ; sulfur dioxide ; temperature
    Sprache Englisch
    Erscheinungsverlauf 2017-0327
    Umfang p. 18500-18507.
    Erscheinungsort The Royal Society of Chemistry
    Dokumenttyp Artikel
    ISSN 2046-2069
    DOI 10.1039/c7ra00096k
    Datenquelle NAL Katalog (AGRICOLA)

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