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Updated: May 8, 2026

Pool-Boiling Heat-Transfer Enhancement on Cylindrical Surfaces with Hybrid Wettable Patterns
Published on: April 10, 2017
A novel curdlan based desiccant coated heat exchanger for efficient dehumidification
Xiaoping Lei1, Wenjun Ying1, Zhaoran Xue1
1Institute of Refrigeration and Cryogenics, University of Shanghai for Science and Technology, Shanghai, 200093, China.
Abstract:
Desiccant-coated heat exchangers (DCHEs) are instrumental in dehumidification processes; however, the efficiency of existing DCHE systems is often hindered by suboptimal desiccant performance and inadequate optimization of the desiccant-heat exchanger interactions. To address these limitations, we developed a novel curdlan-based DCHE system, formulated a dynamic heat and mass transfer model in COMSOL, and assessed its dehumidification capabilities across a range of environmental conditions. Our dynamic model was experimentally validated, yielding errors of ± 10% for outlet temperature and ± 7.3% for humidity during both dehumidification and regeneration phases. Under an inlet air humidity of 80%, the system achieved a moisture removal capacity (MRC) of 11.84 g/kg and a moisture removal rate (MRR) of 79.4%. Furthermore, the coefficient of performance (COP) peaked at 2.84, with an average cooling capacity (Q) of 385.4 W at a regeneration temperature of 50 °C. This study paves the way for significantly enhancing DCHE dehumidification efficiency and presents a promising energy-saving solution for managing ambient humidity.
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Mechanisms of Heat Transfer
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant heat.