US 11,306,949 B2 · Systems and methods for radiative cooling and heating

Abstract

Systems and methods for radiative cooling and heating are provided. For example, systems for radiative cooling can include a top layer including one or more polymers, where the top layer has high emissivity in at least a portion of the thermal spectrum and an electromagnetic extinction coefficient of approximately zero, absorptivity of approximately zero, and high transmittance in at least a portion of the solar spectrum, and further include a reflective layer including one or more metals, where the reflective layer has high reflectivity in at least a portion of the solar spectrum.

Claims5

Dependent claims

A system for radiative heating, comprising:

a top layer comprising one or more structured materials and having high absorptivity in at least a portion of the solar spectrum;
and
an underlying layer having a lower refractive index than a refractive index of the top layer in at least a portion of the thermal spectrum, wherein the underlying layer comprises at least one air void and is configured to create at least one Mie resonance throughout the solar and/or thermal spectrum.

Dependencies are inferred from the claim text.

Facts

Application

16/451,807Filed 25 Jun 2019 · division

Priority

18 Jun 2015

Published

US 2020/0025425 A123 Jan 2020

Granted

19 Apr 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification24 codes

F25B 23/003
Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect:…
B32B 27/18
Layered products comprising a layer of synthetic resin: characterised by the use of special additives
B32B 27/283
Comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42: comprising polysiloxanes
B32B 33/00
Layered products characterised by particular properties or particular surface features

Family

Application62/181,674Us provisional application · filed 18 Jun 2015

PCT/US2016/038190Parent of this continuation-in-part · filed 17 Jun 2016

Application15/845,820Parent of this division · filed 18 Dec 2017

US 2020/0025425 A1Pre-grant publication · published 23 Jan 2020

US 10,386,097 B2Parent of this division

Application15/845,820Parent of this continuation-in-part

US 2018/0180331 A1Published application

US 11,306,949 B2This patent

From the US filing history. Foreign family members aren’t listed.

Systems and methods for radiative cooling and heating

Life of this patent

Systems and methods for radiative cooling and heating

Life of this patent

Abstract

Claims5