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

Abstract

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

Topology Morphing Insulation: A Review of Technologies and Energy Performance in Dynamic Building Insulation

“…One example is a multi-layer deployable membrane which changes shape, much like the aforementioned tulips [159]. Researchers have explored solutions where radiation dominates, e.g., in space, and have explored a variety of potential solutions designed for deployment, including radiation shields [160][161][162] and radiators [157,163,164] to manage heat dissipation (for example, the radiator shown in Figure 13c). Furthermore, novel geometries have been designed to regulate radiation absorption by taking advantage of the exposed surface area of a cavity [165,166].…”