Title: Radiative cooling textiles using industry-standard particle-free nonporous micro-structured fibers

Abstract

Abstract Thermal radiation is a major dissipative pathway for heat generated by the human body and offers a significant thermoregulation mechanism over a wide range of conditions. We could use this in garment design to enhance personal cooling, which can improve the wearing comfort of garments or even result in energy savings in buildings. At present, however, radiative cooling has received insufficient attention in commercial design and production of textiles for wearable garments. Textiles that efficiently transmit the radiative heat were recently demonstrated, but either do not utilize standard weaving and knitting processes for wearable garments or require substantial process modifications. Here, we demonstrate the design and implementation of large-scale radiative cooling textiles for localized cooling management and enhanced thermal comfort using industry-standard particle-free nonporous micro-structured fibers that are fully compatible with standard textile materials and production methods. The micro-structured fibers, yarns and fabrics are part of a hierarchical photonic structure design that renders the textiles highly infrared transparent (up to > 0.8) while assuring visual opacity (up to 0.99). We design radiative cooling textiles with first-principles electromagnetic methods and fabricate them using commercial textile materials and formation facilities. Our “fabless” approach is confirmed by very good quantitative agreement betweenmore » design and measurements. The resulting fabrics exhibit wearability properties expected of wearable textiles, and lower skin temperature by ≥ 3 °C compared to conventional textiles, which offers the potential for > 30 % energy savings in buildings and increases wearing comfort by significantly reducing the reliance on latent heat dissipation for thermoregulation.« less

Authors:

Catrysse, Peter B.  ^[1];

• Search DOE PAGES for author "Catrysse, Peter B."
• Search DOE PAGES for ORCID "0000-0002-2389-6044"

Fan, Shanhui  ^[1]

• Search DOE PAGES for author "Fan, Shanhui"
• Search DOE PAGES for ORCID "0000-0002-0081-9732"

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+ Show Author Affiliations

1. E. L. Ginzton Laboratory and Department of Electrical Engineering , Stanford University , Stanford , CA 94305 , USA.

Publication Date:

Thu Jan 11 00:00:00 EST 2024

Sponsoring Org.:

USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:

2280709

Grant/Contract Number:  

AR0000533; FG02-07ER46426

Resource Type:

Published Article

Journal Name:

Nanophotonics (Online)

Additional Journal Information:

Journal Name: Nanophotonics (Online) Journal Volume: 13 Journal Issue: 5; Journal ID: ISSN 2192-8614

Publisher:

Walter de Gruyter GmbH

Country of Publication:

Germany

Language:

English