Performance analysis of a hollow fiber membrane-based heat and mass exchanger for evaporative cooling

Xin Cui, Weichao Yan, Yilin Liu, Min Zhao and Liwen Jin

Applied Energy, 2020, vol. 271, issue C, No S0306261920307509

Abstract: A hollow fiber membrane-based semi-direct evaporative cooler (MSDEC) is proposed in this study to conduct a parametrical evaluation. The proposed direct evaporative cooling module is potentially considered as an effective strategy to eliminate the water droplet carryover issue without deteriorating the indoor air quality. A numerical model has been developed to obtain an in-depth understanding of the air treatment process. The model was compared with the experimental data to demonstrate its accuracy for predicting the air conditions in the membrane-based module. The heat and mass transfer performance of the module has been studied by employing the validated model. Simulation results indicated the capability of the proposed membrane-based module to cool and humidify the air. The performance of the membrane-based module has been studied by considering the impact of several key parameters including the inlet air velocity, the inlet air dry-bulb temperature, the inlet air relative humidity, the feed water velocity and the geometric dimensions. The wet-bulb effectiveness of the membrane-based module can be improved to 0.73 for an inlet air velocity of 0.5 m/s. The results were able to provide theoretical suggestions for the further optimized design and application of the hollow fiber membrane-based evaporative cooling module.

Keywords: Evaporative cooling; Heat and mass transfer; Hollow fiber membrane; Numerical simulation; Air-conditioning (search for similar items in EconPapers)
Date: 2020
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Citations: View citations in EconPapers (7)

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DOI: 10.1016/j.apenergy.2020.115238

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