Tunable Kirigami Textiles for Enhanced Convective Cooling

Authors:

Veronica Yu, David Farrell, Katia Bertoldi

Date Created:

2025-01-01

Course Title:

Professor:

Not specified

About Paper:

Effective thermoregulation is critical for human safety and different kirigami geometries influence thermal performance at comfort, with textiles acting as the interface of that heat transfer.various strain levels and wind speeds, and to evaluate the textile’s These textiles offer a layer of physical and UV protection, but heat transfer capacity relative to a bare surface. We perform are unfavorable in warm conditions, as added material inherently convective heat-transfer experiments on cylindrical samples and insulates and reduces heat transfer compared to bare skin. While analyze performance in relation to the surface area and volume of most existing literature studies textiles as insulating technologies,petal openings. Preliminary results identify one knit sample that we aim to develop a wearable textile that performs the opposite exceeds the heat transfer rate of a bare cylinder at wind speeds function and enables faster heat loss than an uncovered surface. above20m/s. Ongoingexperimentswillexploreabroaderrangeof Using kirigami ellipse patterns, our textile can form out-of- geometries and strains to refine our understanding of heat transfer plane petals when stretched, even when fitted tight to a cylinder, in kirigami textiles. This study lays the foundation for textiles that demonstrating its functionality for wearables. These petals can enhance cooling beyond the limits of bare skin, with strong induce fluid-structure interactions that change airflow and increase potential for use in high-speed sports and occupational settings in convective heat transfer. Our objective is to characterize how extreme climates.

Abstract:

Effective thermoregulation is critical for human safety and different kirigami geometries influence thermal performance at comfort, with textiles acting as the interface of that heat transfer.various strain levels and wind speeds, and to evaluate the textile’s These textiles offer a layer of physical and UV protection, but heat transfer capacity relative to a bare surface. We perform are unfavorable in warm conditions, as added material inherently convective heat-transfer experiments on cylindrical samples and insulates and reduces heat transfer compared to bare skin. While analyze performance in relation to the surface area and volume of most existing literature studies textiles as insulating technologies,petal openings. Preliminary results identify one knit sample that we aim to develop a wearable textile that performs the opposite exceeds the heat transfer rate of a bare cylinder at wind speeds function and enables faster heat loss than an uncovered surface. above20m/s. Ongoingexperimentswillexploreabroaderrangeof Using kirigami ellipse patterns, our textile can form out-of- geometries and strains to refine our understanding of heat transfer plane petals when stretched, even when fitted tight to a cylinder, in kirigami textiles. This study lays the foundation for textiles that demonstrating its functionality for wearables. These petals can enhance cooling beyond the limits of bare skin, with strong induce fluid-structure interactions that change airflow and increase potential for use in high-speed sports and occupational settings in convective heat transfer. Our objective is to characterize how extreme climates.

Source:

Harvard / Harvard College | Eliot House | Mechanical Engineering | 2028 / 2025

Topics:

textile, heat, transfer, kirigami, bare, convective, surface, petal, cooling, geometry, performance, strain

Co-authors:

@veronicayu401 , @davidfarrell402 , @katiabertoldi246