Desiccant Performance Evaluation of Desiccant-Coated Heat Exchanger-Based Heat Pump by Equilibrium Model

LIU Yuexin, LIU Zhilu, XIA Xiaoxiao, LI Wei, TU Zhengkai, CAI Shanshan, LI Song

Journal of Thermal Science ›› 2023, Vol. 32 ›› Issue (6) : 2361-2373.

PDF(7088 KB)
PDF(7088 KB)
Journal of Thermal Science ›› 2023, Vol. 32 ›› Issue (6) : 2361-2373. DOI: 10.1007/s11630-023-1881-0  CSTR: 32141.14.JTS-023-1881-0

Desiccant Performance Evaluation of Desiccant-Coated Heat Exchanger-Based Heat Pump by Equilibrium Model

  • LIU Yuexin, LIU Zhilu, XIA Xiaoxiao, LI Wei, TU Zhengkai, CAI Shanshan, LI Song*
Author information +
History +

Abstract

By combining the advantages of desiccant dehumidification and vapor compression refrigeration, the desiccant-coated heat exchanger-based heat pump (DCHE HP) is regarded as a promising alternative to the traditional vapor-compression air conditioning system (VCAC). Selecting proper desiccants from a large number of candidates is of great importance to improve the performance of DCHE HP. However, this task is challenging using current experimental or modelling strategies. In this work, we developed an equilibrium model to evaluate the power consumption of 39 DCHE HPs coated with different desiccants under various operating conditions. Eventually, five desiccants with low power consumption were selected. It was also demonstrated that under given operating conditions, the DCHE HP based on the five selected desiccants can save 21.3%–32.9% power compared with the VCAC. The power consumption of the DCHE HP is largely dependent on the heat of adsorption, the cyclical water uptakes and the remained moisture contents of the coating desiccants. It was further revealed that the moderate heat of adsorption, the larger cyclical water uptake and the lower remained moisture content are preferable for reducing the system energy demand. This work reported a quick evaluation of 39 desiccants for DCHE HP by an equilibrium model, which may also offer insights into the choosing and designing of desiccants for DCHE HP.

Key words

adsorption / metal-organic frameworks / dehumidification / power consumption / relative humidity

Cite this article

Download Citations
LIU Yuexin, LIU Zhilu, XIA Xiaoxiao, LI Wei, TU Zhengkai, CAI Shanshan, LI Song. Desiccant Performance Evaluation of Desiccant-Coated Heat Exchanger-Based Heat Pump by Equilibrium Model[J]. Journal of Thermal Science, 2023, 32(6): 2361-2373 https://doi.org/10.1007/s11630-023-1881-0

References

[1] Cooling. https://www.iea.org/reports/cooling (accessed 25th August 2020).
[2] The Future of Cooling. https://www.iea.org/reports/the-future-of-cooling (accessed 15th January 2020).
[3] Tu Y.D., Wang R.Z., Ge T.S., et al., Comfortable, high-efficiency heat pump with desiccant-coated, water-sorbing heat exchangers. Scientific Report, 2017, 7: 40437.
[4] Chen X.J., Riffat S., Bai H.Y., et al., Recent progress in liquid desiccant dehumidification and air-conditioning: A review. Energy and Built Environment, 2020, 1(1): 106–130.
[5] Zheng X., Ge T.S., Wang R.Z., Recent progress on desiccant materials for solid desiccant cooling systems. Energy, 2014, 74: 280–294.
[6] Mazzei P., Minichiello F., Palma D., HVAC dehumidification systems for thermal comfort: a critical review. Applied Thermal Engineering, 2005, 25(5–6): 677–707.
[7] La D., Dai Y.J., Li Y.M., et al., Technical development of rotary desiccant dehumidification and air conditioning: A review. Renewable and Sustainable Energy Reviews, 2010, 14(1): 130–147.
[8] Ge T.S., Dai Y.J., Wang R.Z., et al., Feasible study of a self-cooled solid desiccant cooling system based on desiccant coated heat exchanger. Applied Thermal Engineering, 2013, 58(1–2): 281–290.
[9] Jiang Y., Ge T.S., Wang R.Z., Performance simulation of a joint solid desiccant heat pump and variable refrigerant flow air conditioning system in EnergyPlus. Energy and Buildings, 2013, 65: 220–230.
[10] Zhao Y., Dai Y.J., Ge T.S., et al., On heat and moisture transfer characteristics of a desiccant dehumidification unit using fin tube heat exchanger with silica gel coating. Applied Thermal Engineering, 2015, 91: 308–317.
[11] Ge T.S., Cao W., Pan X., et al., Experimental investigation on performance of desiccant coated heat exchanger and sensible heat exchanger operating in series. International Journal of Refrigeration, 2017, 83: 88–98.
[12] Chai S.W., Sun X.Y., Zhao Y., et al., Experimental investigation on a fresh air dehumidification system using heat pump with desiccant coated heat exchanger. Energy, 2019, 171: 306–314.
[13] Ge T.S., Dai Y.J., Wang R.Z., Performance study of silica gel coated fin-tube heat exchanger cooling system based on a developed mathematical model. Energy Conversion and Management, 2011, 52(6): 2329–2338.
[14] Sun X.Y., Dai Y.J., Ge T.S., et al., Comparison of performance characteristics of desiccant coated air-water heat exchanger with conventional air-water heat exchanger – Experimental and analytical investigation. Energy, 2017, 137: 399–411.
[15] Hua L.J., Jiang Y., Ge T.S., et al., Experimental investigation on a novel heat pump system based on desiccant coated heat exchangers. Energy, 2018, 142: 96–107.
[16] Tu Y.D., Wang R.Z., Ge T.S., New concept of desiccant-enhanced heat pump. Energy Conversion and Management, 2018, 156: 568–574.
[17] Cui S.Q., Qin M.H., Marandi A., et al., Metal-Organic Frameworks as advanced moisture sorbents for energy-efficient high temperature cooling. Scientific Report, 2018, 8: 15284.
[18] Hua L.J., Ge T.S., Wang R.Z., Extremely high efficient heat pump with desiccant coated evaporator and condenser. Energy, 2019, 170: 569–579.
[19] Zheng X., Wang R.Z., Tu Y.D., Investigation on energy consumption of desiccant coated heat exchanger based heat pump: Limitation of adsorption heat of desiccant. Energy Conversion and Management, 2019, 188: 473–479.
[20] Hua L.J., Ge T.S., Wang R.Z., A mathematical model to predict the performance of desiccant coated evaporators and condensers. International Journal of Refrigeration, 2020, 109: 188–207.
[21] Zu K., Cui S.Q., Qin M.H., Performance comparison between metal-organic framework (MOFs) and conventional desiccants (silica gel, zeolite) for a novel high temperature cooling system. IOP Conference Series: Materials Science and Engineering, 2019, 609(5): 052013.
[22] Stegbauer L., Hahn M.W., Jentys A., et al., Tunable water and CO2 sorption properties in isostructural azine-based covalent organic frameworks through polarity engineering. Chemistry of Materials, 2015, 27(23): 7874–7881.
[23] Coelho J.A., Ribeiro A.M., Ferreira A.F.P., et al., Stability of an Al-Fumarate MOF and its potential for CO2 capture from wet stream. Industrial & Engineering Chemistry Research, 2016, 55(7): 2134–2143.
[24] Xia X.X., Cao M., Liu Z.L., et al., Elucidation of adsorption cooling characteristics of Zr-MOFs: Effects of structure property and working fluids. Chemical Engineering Science, 2019, 204: 48–58.
[25] Küsgens P., Rose M., Senkovska I., et al., Characterization of metal-organic frameworks by water adsorption. Microporous and Mesoporous Materials, 2009, 120(3): 325–330.
[26] Yearin B., Ali C., Epoxy-functionalized porous organic polymers via the diels-alder cycloaddition reaction for atmospheric water capture. Angewandte Chemie International Edition, 2018, 57(12): 3173–3177.
[27] Rezk A., Al-Dadah R., Mahmoud S., et al., Characterisation of metal organic frameworks for adsorption cooling. International Journal of Heat and Mass Transfer, 2012, 55(25–26): 7366–7374.
[28] Xu F., Bian Z.F., Ge T.S., et al., Analysis on solar energy powered cooling system based on desiccant coated heat exchanger using metal-organic framework. Energy, 2019, 177: 211–221.
[29] Goldsworthy M.J., Measurements of water vapour sorption isotherms for RD silica gel, AQSOA-Z01, AQSOA-Z02, AQSOA-Z05 and CECA zeolite 3A. Microporous and Mesoporous Materials, 2014, 196: 59–67.
[30] Kim H., Cho H.J., Narayanan S., et al., Characterization of adsorption enthalpy of novel water-stable zeolites and metal-organic frameworks. Scientific Report, 2016, 6: 19097.
[31] Mullangi D., Nandi S., Shalini S., et al., Pd loaded amphiphilic COF as catalyst for multi-fold Heck reactions, C-C couplings and CO oxidation. Scientific Report, 2015, 5: 10876.
[32] Jeremias F., Lozan V., Henninger S.K., et al., Programming MOFs for water sorption: amino-functionalized MIL-125 and UiO-66 for heat transformation and heat storage applications. Dalton Transactions, 2013, 42(45): 15967–15973.
[33] de Lange M.F., Zeng T., Vlugt T.J.H., et al., Manufacture of dense CAU-10-H coatings for application in adsorption driven heat pumps: optimization and characterization. CrystEngComm, 2015, 17(31): 5911–5920.
[34] Cadiau A., Lee J.S., Borges D.D., et al., Design of hydrophilic metal organic framework water adsorbents for heat reallocation. Advanced Materials, 2015, 27(32): 4775–4780.
[35] Wang S.J., Lee J.S., Wahiduzzaman M., et al., A robust large-pore zirconium carboxylate metal-organic framework for energy-efficient water-sorption-driven refrigeration. Nature Energy, 2018, 3(11): 985–993.
[36] Lee J., Yoon J.W., Mileo P.G.M., et al., Porous metal-organic framework CUK-1 for adsorption heat allocation toward green applications of natural refrigerant water. ACS Applied Materials & Interfaces, 2019, 11(29): 25778–25789.
[37] Lenzen D., Zhao J.J., Ernst S.-J., et al., A metal-organic framework for efficient water-based ultra-low- temperature-driven cooling. Nature Communication, 2019, 10(1): 3025.
[38] Akiyama G., Matsuda R., Sato H., et al., Effect of functional groups in MIL-101 on water sorption behavior. Microporous and Mesoporous Materials, 2012, 157: 89–93.
[39] Taylor J.M., Vaidhyanathan R., Iremonger S.S., et al., Enhancing water stability of metal-organic frameworks via phosphonate monoester linkers. Journal of the American Chemical Society, 2012, 134(35): 14338– 14340.
[40] Furukawa H., Gandara F., Zhang Y., et al., Water adsorption in porous metal-organic frameworks and related materials. Journal of the American Chemical Society, 2014, 136(11): 4369–4381.
[41] Jeremias F., Khutia A., Henninger S.K., et al., MIL-100(Al, Fe) as water adsorbents for heat transformation purposes—a promising application. Journal of Materials Chemistry, 2012, 22(20): 10148– 10151.
[42] Giaya A., Thompson R.W., Single-component gas phase adsorption and desorption studies using a tapered element oscillating microbalance. Microporous and Mesoporous Materials, 2002, 55(3): 265–274.
[43] Tu Y.D., Jiang Y., Ge T.S., et al., Analysis on impact factors of energy consumption of novel solid adsorptive dehumidification air-condition system. Journal of Chemical Industry and Engineering (China), 2014, 65: 222–226.
[44] Zheng X., Wang R.Z., Ma W.X., Dehumidification assessment for desiccant coated heat exchanger systems in different buildings and climates: Fast choice of desiccants. Energy and Buildings, 2020, 221: 110083.
[45] Engineering ToolBox, (2001). 
https://www.engineeringtoolbox.com (accessed 30th January 2020).
[46] de Lange M.F., Verouden K.J.F.M., Vlugt T.J.H., et al., Adsorption-driven heat pumps: The potential of metal-organic frameworks. Chemical Review, 2015, 115(22): 12205–12250.

Funding

This work was supported by the National Key Research and Development Program of China (Grant No. 2020YFB1506300). We thank the support from the Analytical & Testing Center of Huazhong University of Science and Technology.

RIGHTS & PERMISSIONS

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2023
PDF(7088 KB)

75

Accesses

0

Citation

Detail

Sections
Recommended

/