Phase Change Material Enhanced Radiative Cooler for Temperature-Adaptive Thermal Regulation

Meng Yang, Hongmei Zhong, Tao Li, Bangyao Wu, Zuankai Wang, Dazhi Sun

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)

Abstract

Passive radiative cooling (PRC), as an electricity-free and environmentally friendly cooling strategy, is highly desirable in improving the global energy landscape. Despite numerous efforts, most designs for PRC are so devoted to improving the cooling performance in the daytime that they neglect the triggered overcooling at night. Herein, we approached an effective design for temperature-adaptive thermal management through integrating PRC and temperature control of room-temperature phase change material. Compared with conventional radiative coolers, the developed phase change material-enhanced radiative cooler (PCMRC) can adjust its performance according to the temperature of day and night. The PCMRC achieved an average subambient temperature drop of ∼6.3 °C under direct sunlight and an average temperature rise of ∼2.1 °C above ambient temperature at night, as well as a reduced temperature difference between day and night. The temperature-adaptive PCMRC shows great promise for passive radiative cooling regulation, which can further extend the applications of passive radiative cooling.

Original languageEnglish
Pages (from-to)1693-1700
JournalACS Nano
Volume17
Issue number2
DOIs
Publication statusPublished - 12 Jan 2023
Externally publishedYes

Keywords

  • overcooling
  • phase change material
  • radiative cooling
  • temperature adaptability
  • temperature difference
  • thermal regulation

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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