Study and Development of a Novel Superhydrophilic-Nanostructured Composite Surface in Dehumidification Systems

Project: Research

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The major objective of this proposed project is to enhance the water removal performance of dehumidification systems by employing a novel superhydrophilic-nanostructured composite surface, which consists of two integrated structures: 1) a superhydrophilic-nanostructured surface, and 2) an advanced composite adsorbent. It is widely known that the superhydrophilic-nanostructured surface has a high water removal performance, and a composite adsorbent shows a superior water adsorption performance. Our preliminary results show that the water removal performance of a copper plate using the proposed superhydrophilic-nanostructured composite surface enhances by 35% and 50% compared to those of the superhydrophilic-coating surface and the untreated-copper surface, respectively.The nanoscale superhydrophilic surface will be firstly formed by chemical reactions, followed by an electrostatic coating of the composite adsorbents. When compared with the packing adsorbent method, the electrostatic coating provides advantages of thermal contact resistance reduction, and a stronger and uniform coating layer. In order to verify the performance of the superhydrophilic-nanostructured composite surface, a new hybrid dehumidifier prototype equipped with this surface will be designed and built. Its dehumidification performance will be tested and evaluated. Apart from dehumidification systems, this innovative technology also offers great application potential for energy efficiency in heating, ventilation, and air conditioning (HVAC), and adsorption cooling and desalination systems.


Project number9440205
Effective start/end date1/06/19 → …