Origami microfluidics for radiant cooling with small temperature differences in buildings

Grinham, Jonathan; Craig, Salmaan; Ingber, Donald E.; Bechthold, Martin

doi:10.1016/j.apenergy.2020.115610

Cited by 27 publications

(9 citation statements)

References 70 publications

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“…It is reported that using origami increases active surfaces that rises the heat dissipation for radiation heat transfer. To confirm the theoretical findings reported by Wang and Jiang, 29 experimental studies were conducted by Grinham et al 30 on both the backand-forth fold and Miura Ori fold. It is reported that the W-fold and Miura Ori cooling rates were 55% and 67% higher than that of a flat geometry, respectively.…”

mentioning

confidence: 58%

“…Due to a lack of research on the cooling mechanisms of origami, comparisons cannot be made to the literature. Grinham et al 30 investigated the cooling of origami geometries (W‐fold and Miura Ori (2)) when they are perpendicular to the direction of gravity (horizontal). It was reported that the cooling heat flux of the W‐fold and Miura Ori (2) increased by 55% and 67%, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Thermal performance of dynamic, origami‐inspired geometries: An experimental study

et al. 2023

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Origami has become an increasingly popular geometry in thermal engineering, namely, heat regulatory applications such as heat sinks and radiators. In this study, the radiative heating and radiative and natural convective cooling of three origami geometries (W-fold, Miura Ori (1), and Miura Ori (2)) made of heavy-duty aluminum foil under a radiative heater with different powers (800, 1600, and 2400 W) and different compression lengths (0.15, 0.25, 0.35, and 0.45 m) were investigated. It was found that the Miura Ori (1) and Miura Ori (2) geometries have three to four times hightemperature differences (the maximum temperature at the end of the heating process minus the initial temperature) than the W-fold geometry. The Miura Ori (2) and Miura Ori (1) geometries produced high heat capacity enhancements of 1.2-3.2 times at high compression lengths that showed great potential for applications such as solar steam generators. The overall heat transfer coefficient for cooling can be controlled by changing the compression length of the origami geometry, allowing for dynamic surface

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confidence: 58%

Section: Resultsmentioning

confidence: 99%

Thermal performance of dynamic, origami‐inspired geometries: An experimental study

et al. 2023

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“…For example, Hatton et al (2013) proposed composite windows with artificial vasculature, similar to the one that exists in insect wings, for improved thermal regulation in buildings. Grinham et al, (2020) designed folded origami surfaces to mimic natural surface morphologies (folds, wrinkles, groves) for heat dissipation via convection in architectural facades.…”

Section: Functional Morphological Adaptation In Spatial Designmentioning

confidence: 99%

Self-Cleaning Surface Architectures from Chitin Biomaterials - Computational and experimental methodology

Zheng¹,

Velho²,

Ross³

et al. 2022

Proceedings of the 40th International Conference on Education and Research in Computer Aided Architectural Design in Europe (eC

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The current pandemic and the climate crisis urge people to rethink their relationships to the natural and urban environments. In this research we turned to nature for inspiration to find new ways to keep human environments clean and healthy. This paper presents a computational and experimental methodology to design self-cleaning architectural surfaces from chitin biomaterial modeled after butterfly wings. We fabricate surface architectures using parametric modeling, 3d printing, and molding of chitin biomaterial, and assess their performance using mechanical testing, experimental and computational simulations. The goal is to provide an alternative to hydrophobic fossil fuel-based plastics using surface morphologies of biomaterials to achieve structural rigidity and selfcleaning properties in architectural surfaces.

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“…Figure 1a-c shows the proposed designs of the pipe arrangement configuration that will be used in this research. Figure 1a is the common serpentine flow configuration and is widely used with RCP [1,[15][16][17][18][19][20][21][22]. Figure 1a will serve as a benchmark for the other two proposed designs.…”

Section: Pipe Arrangement Configurationsmentioning

confidence: 99%

Numerical Analysis on the Performance of a Radiant Cooling Panel with Serpentine-Based Design

et al. 2021

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Radiant cooling systems (RCS) are gaining acceptance as a heating, ventilation, and air conditioning (HVAC) solution for achieving adequate thermal comfort and maintaining acceptable indoor air quality inside buildings. RCS are well known for their energy-saving potential; however, serious condensation problem hinders the growth of this technology. In order to prevent the risk of condensation, the supply water temperature is kept higher than the dew point temperature of the air inside the room. The full potential of the cooling power of a radiant cooling panel is limited. Therefore, this article is on maximizing the cooling capacity of a radiant cooling panel, in terms of flow configuration. Radiant cooling panels (RCP) with different chilled water pipe configurations are designed and compared, side by side with the conventional serpentine flow configuration. The cooling performance of the radiant cooling panels is evaluated by using computational fluid dynamics (CFD) with Ansys Fluent software (Ansys 2020 R2, PA, USA). Under similar flow and operating conditions, the common serpentine flow configuration exhibits the least effective cooling performance, with the highest pressure drop across the pipe. It is concluded that the proposed designs have the potential of improving the overall efficiency of RCP in terms of temperature distribution, cooling capacity, and pressure drop.

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Origami microfluidics for radiant cooling with small temperature differences in buildings

Cited by 27 publications

References 70 publications

Thermal performance of dynamic, origami‐inspired geometries: An experimental study

Thermal performance of dynamic, origami‐inspired geometries: An experimental study

Self-Cleaning Surface Architectures from Chitin Biomaterials - Computational and experimental methodology

Numerical Analysis on the Performance of a Radiant Cooling Panel with Serpentine-Based Design

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