DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Printable, emissivity-adaptive and albedo-optimized covering for year-round energy saving

Journal Article · · Joule
 [1];  [2];  [1];  [3];  [3];  [1];  [3];  [4];  [5];  [5];  [4];  [3];  [6];  [1];  [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  2. Univ. of California, Berkeley, CA (United States); Tsinghua Univ., Beijing (China)
  3. Univ. of California, Berkeley, CA (United States)
  4. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
  5. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry
  6. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)

Radiative cooling uses high-emissivity materials to passively cool the surface of outdoor objects, such as building roofs on hot days. The issue of overcooling with this technology on cold days can be addressed by structures with thermal emissivity that is adaptive to temperature. Despite recent advances in temperature-adaptive structures, great challenges remain in their fabrication feasibility and unoptimized solar heating that may override the radiative cooling benefit. Here, in this work, we develop a printable, emissivity-adaptive and albedo-optimized covering (PEAC) based on recyclable materials with roll-to-roll fabrication. A PEAC automatically switches its sky-window emissivity from 0.25 to 0.85 when the surface temperature exceeds a pre-set transition temperature, delivering an albedo optimized for maximal year-round energy saving or thermal comfort in a given climate.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
2228585
Alternate ID(s):
OSTI ID: 2212831
Journal Information:
Joule, Journal Name: Joule Journal Issue: 11 Vol. 7; ISSN 2542-4351
Publisher:
Elsevier - Cell PressCopyright Statement
Country of Publication:
United States
Language:
English

References (46)

Effect of W doping in metal–insulator transition material VO 2 by tunnelling spectroscopy journal February 2007
Scalable and paint-format colored coatings for passive radiative cooling journal September 2022
Infrared spectroscopy and nano-imaging of the insulator-to-metal transition in vanadium dioxide journal February 2009
Subwavelength light confinement and enhancement enabled by dissipative dielectric nanostructures journal January 2018
Colored radiative cooling: How to balance color display and radiative cooling performance journal December 2021
Optical properties of fourteen metals in the infrared and far infrared: Al, Co, Cu, Au, Fe, Pb, Mo, Ni, Pd, Pt, Ag, Ti, V, and W journal January 1985
Temperature-adaptive radiative coating for all-season household thermal regulation journal December 2021
A radiative cooling structural material journal May 2019
One-Step Hydrothermal Synthesis of W-Doped VO 2 (M) Nanorods with a Tunable Phase-Transition Temperature for Infrared Smart Windows journal December 2016
Emissivity estimation for accurate quantitative thermography journal October 2012
Passive radiative cooling below ambient air temperature under direct sunlight journal November 2014
Reducing temperature swing of space objects with temperature-adaptive solar or radiative coating journal October 2022
Ultra-Wideband Transparent Conductive Electrode for Electrochromic Synergistic Solar and Radiative Heat Management journal October 2021
Hierarchically porous polymer coatings for highly efficient passive daytime radiative cooling journal September 2018
Self-switchable radiative cooling journal March 2022
Dynamic glazing with switchable solar reflectance for radiative cooling and solar heating journal April 2022
Easy Way to Achieve Self-Adaptive Cooling of Passive Radiative Materials journal May 2020
On the energy modulation of daytime radiative coolers: A review on infrared emissivity dynamic switch against overcooling journal October 2020
Integration of daytime radiative cooling and solar heating for year-round energy saving in buildings journal November 2020
Potential benefits of cool walls on residential and commercial buildings across California and the United States: Conserving energy, saving money, and reducing emission of greenhouse gases and air pollutants journal September 2019
Optical engineering of polymer materials and composites for simultaneous color and thermal management journal January 2019
Hygrothermal behaviour of flat cool and standard roofs on residential and commercial buildings in North America journal February 2013
Coloured low-emissivity films for building envelopes for year-round energy savings journal December 2021
Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime radiative cooling journal February 2017
Synthesis and characterization of VO2-based thermochromic thin films for energy-efficient windows journal April 2011
A Janus emitter for passive heat release from enclosures journal September 2020
Light Propagation with Phase Discontinuities: Generalized Laws of Reflection and Refraction journal September 2011
Alignment engineering in thermal materials journal July 2023
Scalable thermochromic smart windows with passive radiative cooling regulation journal December 2021
3D Self-Supported Nanoarchitectured Arrays Electrodes for Lithium-Ion Batteries journal January 2012
Infrared-Radiation-Enhanced Nanofiber Membrane for Sky Radiative Cooling of the Human Body journal November 2019
Improving cabin thermal environment of parked vehicles under direct sunlight using a daytime radiative cooling cover journal May 2021
Oxides Which Show a Metal-to-Insulator Transition at the Neel Temperature journal July 1959
The Kirchhoff-Planck Radiation Law journal April 1967
3-D printer settings effects on the thermal conductivity of acrylonitrile butadiene styrene (ABS) journal September 2018
Infrared Optical Properties of Vanadium Dioxide Above and Below the Transition Temperature journal December 1966
Absorption of solar energy in a room journal April 2002
Radiative cooling efficiency of white pigmented paints journal June 1993
Temperature-dependent dual-mode thermal management device with net zero energy for year-round energy saving journal August 2022
Plastics recycling with a difference journal April 2018
Development and testing of a zero stitch MLI blanket using plastic pins for space use journal November 2014
Directional Radiative Cooling via Exceptional Epsilon-Based Microcavities journal May 2023
Temperature and voltage driven tunable metal-insulator transition in individual W x V 1 − x O 2 nanowires journal February 2011
Anomalously low electronic thermal conductivity in metallic vanadium dioxide journal January 2017
Hierarchical-morphology metafabric for scalable passive daytime radiative cooling journal August 2021
Full Daytime Sub-ambient Radiative Cooling in Commercial-like Paints with High Figure of Merit journal October 2020