Vortex-Induced Turbulence Optimized Membrane Enthalpy Exchanger: Dynamic Humidity Modulation and Coupled Heat–Mass Transfer Enhancement

Yang Liu, Dong-Chuan Mo and Shu-Shen Lyu ()
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Yang Liu: School of Materials, Sun Yat-sen University, Shenzhen 518107, China
Dong-Chuan Mo: School of Materials, Sun Yat-sen University, Shenzhen 518107, China
Shu-Shen Lyu: School of Materials, Sun Yat-sen University, Shenzhen 518107, China

Energies, 2025, vol. 18, issue 11, 1-25

Abstract: A bioinspired vortex-inducing architecture was engineered within the hydrodynamic focusing region of membrane-based enthalpy exchangers (MEEs) to generate controlled Kármán vortex shedding, strategically enhancing thermal–hygric coupling through boundary layer modulation. Computational simulations employing ANSYS Fluent 2024R1 and grid-convergence validation (GCI < 1.8%) demonstrated that at Re = 392 (2.57 m/s flow velocity), the vortex-integrated configuration achieved temperature exchange efficiency enhancements of 3.91% (summer) and 3.58% (winter), latent efficiency gains of 3.71% and 3.53%, alongside enthalpy effectiveness improvements of 3.37% and 3.36%, respectively. The interconnected momentum–heat–mass analogies culminated in peaks of performance evaluation criterion (PEC) = 1.33 (heat transfer) and 1.22 (mass transfer), substantiating vortex-induced Reynolds analogy optimization under typical HVAC operational scenarios (summer: 27 °C/50.3% RH; winter: 21 °C/39.7% RH).

Keywords: membrane-based enthalpy exchanger (MEE); thermal–hygric coupling enhancement; vortex-induced turbulence modulation; Reynolds analogy optimization; HVAC energy recovery (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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