Abstract
Electrolytic dehumidification with polymer electrolyte membrane (PEM) is a compact and effective independent humidity control method for refrigerators. To explore the performance of PEM-based dehumidification under sub-zero conditions, experiments were conducted at low temperatures of −10–0 °C. Results showed that this device could operate stably at temperatures above −8.5 °C. The moisture removal rate was 0.05–0.08 × 10−9 g/s, and the energy efficiency was 0.64–0.68 × 10−2 g/(J m2), respectively. It has also been found that the moisture removal rate and energy efficiency decreased with the decrease of absolute humidity in the air. Furthermore, the performance under sub-zero conditions was relatively low, which the dehumidification rate at −8.5 °C was only 1/6 of that at 25 °C. The possible reason is that water inside the PEM may be frost, hindering the proton transmission below 0 °C. Besides, the electrical conductivity also reduces due to the low temperature. This study proved that PEM-based dehumidification is a promising alternative for independent humidity control under low-temperature conditions.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Abbreviations
- m :
-
Mass flow rate
- t :
-
Temperature
- RH:
-
Relative humidity
- ⍵ :
-
Moisture content
- a :
-
Air
- A :
-
Anode
- In:
-
Inlet
- P :
-
Power
- w :
-
Water
- C :
-
Cathode
- Out:
-
Outlet
- A area :
-
Membrane area
References
Cheng, et al.: Household frost-free appliances humidity control principle and practical application (in Chinese), J. Appl. Sci. Technol. 04, 56–59 (2017)
Liu, et al.: Performance improvement in air dehumidifiers: from ideal to actual (in Chinese). Chin. Sci. Bull. 60, 2631–2639 (2015)
Iwahara, et al.: Electrochemical dehumidification using proton conducting ceramics. Solid State Ionics 136–137, 133–138 (2000)
Onda, et al.: Polymer electrolyte dehumidifying cell and its application to air condi-tioners. J. Appl. Electro-chem. 152(12), A2369–A2375 (2005)
Sakuma, et al.: Water transfer simulation of an electrolytic de-humidifier. J. Appl. Electro-chem. 39(6), 815–825 (2009)
Sakuma, et al.: Estimation of dehumidifying performance of solid polymer electrolytic dehumidifier for practical application. J. Appl. Electro-chem. 40(12), 2153–2160 (2010)
Qi, et al.: Experimental study on electrolytic dehumidifier with polymer electrolyte membrane for air-conditioning systems. Energy Procedia. 142, 1908–1913 (2017)
Chen, et al.: A dehumidification process with cascading desiccant wheels to produce air with dew point below 0 °C. Appl. Therm. Eng. 148, 78–86 (2019)
Li, Y.Y.Yan: Solid desiccant dehumidification techniques inspired from natural electroosmosis phenomena. J. Bionic Eng. 8, 90–97 (2011)
Acknowledgements
The project is supported by the National Key Research and Development Program (No. 2016YFB0901404), National Natural Science Foundation of China (51876067), the National Science Fund for Distinguished Young Scholars of Guangdong Province (2018B030306014). It is also supported by the Science and Technology Planning Project of Guangdong Province: Guangdong–Hong Kong Technology Cooperation Funding Scheme (TCFS), No.2017B050506005.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Li, T., Qi, R. (2020). A Study on Polymer Electrolyte Membrane (PEM)-Based Electrolytic Air Dehumidification for Sub-Zero Environment. In: Wang, Z., Zhu, Y., Wang, F., Wang, P., Shen, C., Liu, J. (eds) Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019). ISHVAC 2019. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-9524-6_21
Download citation
DOI: https://doi.org/10.1007/978-981-13-9524-6_21
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-9523-9
Online ISBN: 978-981-13-9524-6
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)