Journal ArticleDOI
Quasi-Liquid Surfaces for Sustainable High-Performance Steam Condensation.
TLDR
In this article , a quasi-liquid surface with ultralow contact angle hysteresis down to 1° showed a heat-transfer coefficient up to 70 and 380% higher than those on conventional hydrophobic and hydrophilic surfaces, respectively.Abstract:
Sustainable high-performance steam condensation is critical to reducing the size, weight, and cost of water and energy systems. It is well-known that dropwise condensation can provide a significantly higher heat-transfer coefficient than filmwise condensation. Tremendous efforts have been spent to promote dropwise condensation by achieving a nonwetting state on superhydrophobic surfaces and a slippery state on liquid-infused surfaces, but these surfaces suffer from severe durability challenges. Here, we report sustainable high-performance dropwise condensation of steam on newly developed durable quasi-liquid surfaces, which are easily made by chemically bonding quasi-liquid polymer molecules on solid substrates. As a result, the solid/water interface is changed to a quasi-liquid/water interface with minimal adhesion and extraordinary durability. The quasi-liquid surface with ultralow contact angle hysteresis down to 1° showed a heat-transfer coefficient up to 70 and 380% higher than those on conventional hydrophobic and hydrophilic surfaces, respectively. Furthermore, we demonstrated that the quasi-liquid coating exhibited a sustainable heat-transfer coefficient of 71 kW/(m2 K) at a heat flux of 420 kW/m2 under a prolonged period of 39 h in continuous steam condensation. Such a quasi-liquid surface has the potential to sustain high-performance dropwise condensation of steam and address the long-standing durability challenge in the field.read more
Citations
More filters
Journal ArticleDOI
Robust and durable liquid-repellent surfaces.
Faze Chen,Yaquan Fang,Yuandong Tian,Dawei Zhang,Jinlong Song,Colin R. Crick,Claire J. Carmalt,Ivan P. Parkin,Yao Lu +8 more
TL;DR: A review of the recent progress made towards robust and durable liquid-repellent surfaces is provided in this article , where the authors focus on various evaluation methods of the robustness and durability of such surfaces.
Journal ArticleDOI
Manipulation of droplets and bubbles for thermal applications
TL;DR: In this paper , the dynamics of droplets and bubbles during phase change including nucleation, growth, and departure critically influence the thermal transport performance and system efficiency, highlighting recent advancements using static and dynamic strategies.
Journal ArticleDOI
Coarsening‐induced disappearing droplets contribute to condensation
TL;DR: In this article , a dynamic model is developed for dropwise condensation by considering the disappearing droplets induced by both coarsening and shedding, which shows good agreement with the experimental validation.
Journal ArticleDOI
Omniphobic liquid-like surfaces
Journal ArticleDOI
Durable Liquid- and Solid-Repellent Elastomeric Coatings Infused with Partially Crosslinked Lubricants.
Jing Wang,Bingyu Wu,Abhishek Dhyani,Taylor Repetto,Andrew J. Gayle,Tae H. Cho,Neil P. Dasgupta,Anish Tuteja +7 more
TL;DR: In this paper , the authors report the design and fabrication of robust solid and liquid-repellent elastomeric coatings that incorporate partially crosslinked lubricating chains within a durable polymer matrix.
References
More filters
Journal ArticleDOI
Bioinspired self-repairing slippery surfaces with pressure-stable omniphobicity
Tak Sing Wong,Sung Hoon Kang,Sindy K. Y. Tang,Elizabeth Smythe,Benjamin Hatton,Alison Grinthal,Joanna Aizenberg +6 more
TL;DR: A strategy to create self-healing, slippery liquid-infused porous surface(s) (SLIPS) with exceptional liquid- and ice-repellency, pressure stability and enhanced optical transparency, applicable to various inexpensive, low-surface-energy structured materials (such as porous Teflon membrane).
Journal ArticleDOI
Self-propelled dropwise condensate on superhydrophobic surfaces.
TL;DR: Continuous dropwise condensation spontaneously occurring on a superhydrophobic surface without any external forces is reported.
Journal ArticleDOI
Studies at phase interfaces. I. The sliding of liquid drops on solid surfaces and a theory for spray retention
TL;DR: In this paper, a theory has been developed to predict the volume of spray liquid that will be retained on a solid surface, based on the sliding of drops of water and solutions of surfactants on wax and cellulose acetate surfaces.
Journal ArticleDOI
Jumping-Droplet-Enhanced Condensation on Scalable Superhydrophobic Nanostructured Surfaces
Nenad Miljkovic,Ryan Enright,Ryan Enright,Youngsuk Nam,Youngsuk Nam,Ken Lopez,Nicholas G. Dou,Jean Sack,Evelyn N. Wang +8 more
TL;DR: This work shows that silanized copper oxide surfaces created via a simple fabrication method can achieve highly efficient jumping-droplet condensation heat transfer and promises a low cost and scalable approach to increase efficiency for applications such as atmospheric water harvesting and dehumidification.
Journal ArticleDOI
Condensation on slippery asymmetric bumps
Kyoo-Chul Park,Philseok Kim,Alison Grinthal,Neil He,David A. Fox,James C. Weaver,Joanna Aizenberg,Joanna Aizenberg +7 more
TL;DR: In this paper, a design approach based on principles derived from Namib desert beetles, cacti, and pitcher plants is proposed to maximize vapour diffusion flux at the apex of convex millimetric bumps by optimizing the radius of curvature and cross-sectional shape.