IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v192y2020ics036054421932376x.html
   My bibliography  Save this article

Entropy and exergy analysis of an internally-cooled membrane liquid desiccant dehumidifier

Author

Listed:
  • Liang, Cai-Hang
  • Li, Nan-Feng
  • Huang, Si-Min

Abstract

The internally-cooled membrane-based liquid desiccant dehumidifier (IMLDD) has good performances for air dehumidification, which is a kind of a parallel-plate membrane contactor with cooling channels. The feed air and the solution streams exchange heat and water vapor through the membranes in a form of a cross-flow arrangement. The water in the cooling channel separated by the plate flows vertically along the plate surfaces to form the falling films, while the sweeping air flows over the films. A lumped parameter heat and mass transfer model, an entropy generation model, and an exergy destruction model in the IMLDD are established and numerically solved. The dehumidification rate, dehumidification efficiency, total heat flux, and heat transfer efficiency are calculated. The effects of the structural parameters, operating conditions, and membrane parameters on the performances are analyzed. The pressure drops, entropy generation rate, and exergy destruction are calculated and analyzed. It can be found that the channel height of about 2 mm is a better choice with the pressure drop of about 69.3–94.2% lower than that of 1 mm. The efficiencies of the IMLDD increase about 69.3–94.2% with the diffusivity increasing from 1.0 × 10−6 m2/s to 4.0 × 10−6 m2/s. In addition, increasing the driving forces of the heat and mass transfer can improve the performance, but the entropy generation and exergy destruction also increase.

Suggested Citation

  • Liang, Cai-Hang & Li, Nan-Feng & Huang, Si-Min, 2020. "Entropy and exergy analysis of an internally-cooled membrane liquid desiccant dehumidifier," Energy, Elsevier, vol. 192(C).
  • Handle: RePEc:eee:energy:v:192:y:2020:i:c:s036054421932376x
    DOI: 10.1016/j.energy.2019.116681
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S036054421932376X
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2019.116681?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Huang, Si-Min & Zhang, Li-Zhi, 2013. "Researches and trends in membrane-based liquid desiccant air dehumidification," Renewable and Sustainable Energy Reviews, Elsevier, vol. 28(C), pages 425-440.
    2. Yang, Liu & Lam, Joseph C. & Tsang, C.L., 2008. "Energy performance of building envelopes in different climate zones in China," Applied Energy, Elsevier, vol. 85(9), pages 800-817, September.
    3. Xiao, Liehui & Yang, Minlin & Zhao, Shuaifei & Yuan, Wu-Zhi & Huang, Si-Min, 2019. "Entropy generation analysis of heat and water recovery from flue gas by transport membrane condenser," Energy, Elsevier, vol. 174(C), pages 835-847.
    4. Mei, L. & Dai, Y.J., 2008. "A technical review on use of liquid-desiccant dehumidification for air-conditioning application," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(3), pages 662-689, April.
    5. Abdel-Salam, Mohamed R.H. & Fauchoux, Melanie & Ge, Gaoming & Besant, Robert W. & Simonson, Carey J., 2014. "Expected energy and economic benefits, and environmental impacts for liquid-to-air membrane energy exchangers (LAMEEs) in HVAC systems: A review," Applied Energy, Elsevier, vol. 127(C), pages 202-218.
    6. Qu, Ming & Abdelaziz, Omar & Gao, Zhiming & Yin, Hongxi, 2018. "Isothermal membrane-based air dehumidification: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 4060-4069.
    7. Ou, Xianhua & Cai, Wenjian & He, Xiongxiong & Zhai, Deqing, 2018. "Experimental investigations on heat and mass transfer performances of a liquid desiccant cooling and dehumidification system," Applied Energy, Elsevier, vol. 220(C), pages 164-175.
    8. Das, Rajat Subhra & Jain, Sanjeev, 2015. "Performance characteristics of cross-flow membrane contactors for liquid desiccant systems," Applied Energy, Elsevier, vol. 141(C), pages 1-11.
    9. Ge, Gaoming & Abdel-Salam, Mohamed R.H. & Besant, Robert W. & Simonson, Carey J., 2013. "Research and applications of liquid-to-air membrane energy exchangers in building HVAC systems at University of Saskatchewan: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 26(C), pages 464-479.
    10. Islam, M.R. & Alan, S.W.L. & Chua, K.J., 2018. "Studying the heat and mass transfer process of liquid desiccant for dehumidification and cooling," Applied Energy, Elsevier, vol. 221(C), pages 334-347.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Zhang, Qinling & Liu, Xiaohua & Zhang, Tao & Xie, Ying, 2020. "Performance optimization of a heat pump driven liquid desiccant dehumidification system using exergy analysis," Energy, Elsevier, vol. 204(C).
    2. Park, Myeong Hyeon & Chung, Jun Yeob & Hong, Seong Ho & Shin, Hyun Ho & Lee, Dongchan & Kim, Yongchan, 2023. "Optimized geometric designs of desiccant wheels with metal-organic frameworks considering dehumidification capacity and energy," Energy, Elsevier, vol. 284(C).
    3. Li, Wei & Yao, Ye, 2021. "Performance analysis of different flow types of internally-cooled membrane-based liquid desiccant dehumidifiers," Energy, Elsevier, vol. 228(C).
    4. Aixiang Xu & Mengjin Xu & Nan Xie & Yawen Xiong & Junze Huang & Yingjie Cai & Zhiqiang Liu & Sheng Yang, 2021. "Thermodynamic Analysis of a Hybrid System Coupled Cooling, Heating and Liquid Dehumidification Powered by Geothermal Energy," Energies, MDPI, vol. 14(19), pages 1-21, September.
    5. Shukla, D.L. & Modi, K.V., 2022. "Influence of distinct input parameters on performance indices of dehumidifier, regenerator and on liquid desiccant-operated evaporative cooling system – A critical review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 168(C).

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. Wen, Tao & Lu, Lin, 2019. "A review of correlations and enhancement approaches for heat and mass transfer in liquid desiccant dehumidification system," Applied Energy, Elsevier, vol. 239(C), pages 757-784.
    2. Abdel-Salam, Ahmed H. & Simonson, Carey J., 2016. "State-of-the-art in liquid desiccant air conditioning equipment and systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1152-1183.
    3. Lin, Jie & Huang, Si-Min & Wang, Ruzhu & Jon Chua, Kian, 2019. "On the in-depth scaling and dimensional analysis of a cross-flow membrane liquid desiccant dehumidifier," Applied Energy, Elsevier, vol. 250(C), pages 786-800.
    4. Luo, Jielin & Yang, Hongxing, 2022. "A state-of-the-art review on the liquid properties regarding energy and environmental performance in liquid desiccant air-conditioning systems," Applied Energy, Elsevier, vol. 325(C).
    5. Su, Wei & Lu, Zhifei & She, Xiaohui & Zhou, Junming & Wang, Feng & Sun, Bo & Zhang, Xiaosong, 2022. "Liquid desiccant regeneration for advanced air conditioning: A comprehensive review on desiccant materials, regenerators, systems and improvement technologies," Applied Energy, Elsevier, vol. 308(C).
    6. Abdel-Salam, Mohamed R.H. & Ge, Gaoming & Fauchoux, Melanie & Besant, Robert W. & Simonson, Carey J., 2014. "State-of-the-art in liquid-to-air membrane energy exchangers (LAMEEs): A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 39(C), pages 700-728.
    7. Liu, Xiaoli & Qu, Ming & Liu, Xiaobing & Wang, Lingshi, 2019. "Membrane-based liquid desiccant air dehumidification: A comprehensive review on materials, components, systems and performances," Renewable and Sustainable Energy Reviews, Elsevier, vol. 110(C), pages 444-466.
    8. Song, Xia & Zhang, Lun & Zhang, Xiaosong, 2019. "Analysis of the temperatures of heating and cooling sources and the air states in liquid desiccant dehumidification systems regenerated by return air," Energy, Elsevier, vol. 168(C), pages 651-661.
    9. Shen, Suping & Cai, Wenjian & Wang, Xinli & Wu, Qiong & Yon, Haoren, 2017. "Investigation of liquid desiccant regenerator with fixed-plate heat recovery system," Energy, Elsevier, vol. 137(C), pages 172-182.
    10. Wang, Xinli & Cai, Wenjian & Yin, Xiaohong, 2017. "A global optimized operation strategy for energy savings in liquid desiccant air conditioning using self-adaptive differential evolutionary algorithm," Applied Energy, Elsevier, vol. 187(C), pages 410-423.
    11. Lydon, G.P. & Hofer, J. & Svetozarevic, B. & Nagy, Z. & Schlueter, A., 2017. "Coupling energy systems with lightweight structures for a net plus energy building," Applied Energy, Elsevier, vol. 189(C), pages 310-326.
    12. Elsarrag, Esam & Igobo, Opubo N. & Alhorr, Yousef & Davies, Philip A., 2016. "Solar pond powered liquid desiccant evaporative cooling," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 124-140.
    13. Pasqualin, P. & Lefers, R. & Mahmoud, S. & Davies, P.A., 2022. "Comparative review of membrane-based desalination technologies for energy-efficient regeneration in liquid desiccant air conditioning of greenhouses," Renewable and Sustainable Energy Reviews, Elsevier, vol. 154(C).
    14. Cui, Xin & Yan, Weichao & Liu, Yilin & Zhao, Min & Jin, Liwen, 2020. "Performance analysis of a hollow fiber membrane-based heat and mass exchanger for evaporative cooling," Applied Energy, Elsevier, vol. 271(C).
    15. Kashish Kumar & Alok Singh & Saboor Shaik & C Ahamed Saleel & Abdul Aabid & Muneer Baig, 2022. "Comparative Analysis on Dehumidification Performance of KCOOH–LiCl Hybrid Liquid Desiccant Air-Conditioning System: An Energy-Saving Approach," Sustainability, MDPI, vol. 14(6), pages 1-22, March.
    16. Shih-Cheng Hu & Angus Shiue & Yi-Shiung Chiu & Archy Wang & Jacky Chen, 2016. "Simplified Heat and Mass Transfer Model for Cross-Flow and Countercurrent Flow Packed Bed Tower Dehumidifiers with a Liquid Desiccant System," Sustainability, MDPI, vol. 8(12), pages 1-13, December.
    17. Gurubalan, A. & Maiya, M.P. & Geoghegan, Patrick J., 2019. "A comprehensive review of liquid desiccant air conditioning system," Applied Energy, Elsevier, vol. 254(C).
    18. Das, Rajat Subhra & Jain, Sanjeev, 2015. "Performance characteristics of cross-flow membrane contactors for liquid desiccant systems," Applied Energy, Elsevier, vol. 141(C), pages 1-11.
    19. Abdel-Salam, Mohamed R.H. & Fauchoux, Melanie & Ge, Gaoming & Besant, Robert W. & Simonson, Carey J., 2014. "Expected energy and economic benefits, and environmental impacts for liquid-to-air membrane energy exchangers (LAMEEs) in HVAC systems: A review," Applied Energy, Elsevier, vol. 127(C), pages 202-218.
    20. Wen, Tao & Luo, Yimo & Wang, Meng & She, Xiaohui, 2021. "Comparative study on the liquid desiccant dehumidification performance of lithium chloride and potassium formate," Renewable Energy, Elsevier, vol. 167(C), pages 841-852.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:192:y:2020:i:c:s036054421932376x. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.