Author: Yang, Linyun
Title: Condensation mass rate on a vertical metal plate with superhydrophobic/hydrophilic treatment under natural convection in the moist air
Advisors: Niu, Jianlei (BEEE)
Degree: M.Eng.
Year: 2022
Subject: Air conditioning -- Design and construction
Dampness in buildings
Hong Kong Polytechnic University -- Dissertations
Department: Department of Building Environment and Energy Engineering
Pages: 1 volume (unpaged) : color illustrations
Language: English
Abstract: Radiant heating and cooling (RHC) system has been employed as a new type of cooling device among the traditional cooling devices due to its main merits of providing a high level of thermal comfort and energy saving. The radiant cooling and heating (RCH) system refers to the system in which the radiative heat transfer account for more than 50% of the total heat transfer in an air-conditioned zone. Differ from the all-air system which achieving cooling by convective heat transfer only, the RHC system condition the space by the combination of radiative and convective heat transfer. Currently, the biggest limitation of applying radiant cooling panel (RCP) is its condensation risk. Using the superhydrophobic aluminum surface instead of untreated surface is one of the strategies which can constrain the size of condensation drop to mitigate the condensation problem. This research aims to measure condensation mass rate on the vertically/ ceiling positioned metal plate with superhydrophobic/ hydrophilic treatment in the moist air under natural convection. The research is experimental based, and the experimental results were compared with the empirical results to see the feasibility of using empirical correlation to predict the condensation mass rate. It was found that the gap between the experimental results and empirical results was acceptable. Thus, the empirical correlation was deemed that it can predict the condensation mass rate on the vertically/ceiling positioned plate under the experimental conditions in this research.
Rights: All rights reserved
Access: restricted access

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