Eli A Goldstein, 39San Francisco, CA

2022017, Jun 9, 2022

Dec 16, 2021

17/553179

- Stanford CA, US
Shanhui Fan - Stanford CA, US
Eden Rephaeli - Menlo Park CA, US
Linxiao Zhu - Stanford CA, US
Marc A. Anoma - Berkeley CA, US
Eli Goldstein - San Francisco CA, US

F28F 13/18
F25B 23/00
F24F 5/00
B60H 1/32
F28F 3/12

Various aspects as described herein are directed to a radiative cooling apparatuses and methods for cooling an object. As consistent with one or more embodiments, a radiative cooling apparatus includes an arrangement of a plurality of different material located at different depths along a depth dimension relative to the object. The plurality of different material includes a solar spectrum reflecting portion configured and arranged to suppress light modes, thereby inhibiting coupling of the incoming electromagnetic radiation, of at least some wavelengths in the solar spectrum, to the object at a range of angles of incidence relative to the depth dimension. Further, the plurality of material includes a thermally-emissive arrangement configured and arranged to facilitate, simultaneously with the inhibiting coupling of the incoming electromagnetic radiation, the thermally-generated electromagnetic emissions from the object at the range of angles of incidence and in mid-IR wavelengths.

2020033, Oct 22, 2020

Apr 17, 2020

16/852132

- Mountain View CA, US
Eli A. Goldstein - Mountain View CA, US
Shanhui Fan - Stanford CA, US

F24S 70/225
F24S 70/16
F24S 70/60

A material may be included in a cooling film or cooling panel to achieve cooling even under direct solar irradiation. The material includes one or more constituent materials and an outer surface configured to interact thermally with the atmosphere and with solar radiation. The material exhibits an emissivity of at least 0.8 in spectral range of 5 μm to 15 um, an ultraviolet reflectivity of at least 0.5 in the spectral range of 275 nm to 375 nm, an ultraviolet absorptivity of at least 0.75 in the spectral range of 275 nm to 375 nm, or a combination thereof. A cooling film, or cooling panel, may be affixed to an exterior surface of a vehicle, structure, or system to provide cooling even under direct solar irradiance.

2020020, Jul 2, 2020

Dec 27, 2019

16/729173

- Mountain View CA, US
Eli A. Goldstein - Mountain View CA, US

F24F 5/00
F24F 11/84

A cooling system includes one or more cooling panels for affecting a cooling load in an environment. The cooling system also includes a heat exchanger coupled to the one or more cooling panels. Each cooling panel includes a film, a panel body, an inlet port, an outlet port, and a fluid path. The film's radiative properties allow it to achieve a temperature less than an environment temperature. The heat exchanger includes ports that are coupled to the fluid paths of the one or more cooling panels. A control system is used to control flow rates, flow paths, fluid temperatures, component temperatures, cooling rates, component operation, or other aspects of a cooling system. For example, the control system controls or monitors pumps, compressors, fans, valves, sensors, actuators, or a combination thereof.

2019001, Jan 17, 2019

Sep 19, 2018

16/136044

- Stanford CA, US
Shanhui Fan - Stanford CA, US
Eden Rephaeli - Menlo Park CA, US
Linxiao Zhu - Stanford CA, US
Marc A. Anoma - Berkeley CA, US
Eli Goldstein - San Francisco CA, US

F28F 13/18
B60H 1/32
F24F 5/00
F25B 23/00

Various aspects as described herein are directed to a radiative cooling apparatuses and methods for cooling an object. As consistent with one or more embodiments, a radiative cooling apparatus includes an arrangement of a plurality of different material located at different depths along a depth dimension relative to the object. The plurality of different material includes a solar spectrum reflecting portion configured and arranged to suppress light modes, thereby inhibiting coupling of the incoming electromagnetic radiation, of at least some wavelengths in the solar spectrum, to the object at a range of angles of incidence relative to the depth dimension. Further, the plurality of material includes a thermally-emissive arrangement configured and arranged to facilitate, simultaneously with the inhibiting coupling of the incoming electromagnetic radiation, the thermally-generated electromagnetic emissions from the object at the range of angles of incidence and in mid-IR wavelengths.

2018002, Jan 25, 2018

Jul 17, 2017

15/651595

- Palo Alto CA, US
Linxiao Zhu - Stanford CA, US
Eli A. Goldstein - San Francisco CA, US
Shanhui Fan - Stanford CA, US

F25B 23/00

A radiative cooler is provided having a thermally insulated vacuum chamber housing that is configured to support a vacuum level of at least 10Torr, an infared-transparent window that is sealably disposed on top of the thermally insulated vacuum chamber and is transparet in the range of 8-13 μm, a selective emitter disposed inside the chamber, a mirror cone on the infared-transparent window, a selective emitter inside the chamber and is configured to passively dissipate heat from the earth into outer space through the infared-transparent window and is thermally decoupled from ambient air and solar irradiation but coupled to outer space, a heat exchanger with inlet and outlet pipes disposed below the selective emitter to cool water flowing through the pipe, a sun shade disposed vertically outside the chamber to minimize direct solar irradiation, and a mirror cone to minimize downward atmospheric radiation.

2015033, Nov 26, 2015

May 21, 2015

14/719116

- Palo Alto CA, US
Shanhui Fan - Stanford CA, US
Eden Rephaeli - Menlo Park CA, US
Linxiao Zhu - Stanford CA, US
Marc Anoma - Palo Alto CA, US
Eli Goldstein - Palo Alto CA, US

F28F 13/18

Various aspects as described herein are directed to a radiative cooling apparatuses and methods for cooling an object. As consistent with one or more embodiments, a radiative cooling apparatus includes an arrangement of a plurality of different material located at different depths along a depth dimension relative to the object. The plurality of different material includes a solar spectrum reflecting portion configured and arranged to suppress light modes, thereby inhibiting coupling of the incoming electromagnetic radiation, of at least some wavelengths in the solar spectrum, to the object at a range of angles of incidence relative to the depth dimension. Further, the plurality of material includes a thermally-emissive arrangement configured and arranged to facilitate, simultaneously with the inhibiting coupling of the incoming electromagnetic radiation, the thermally-generated electromagnetic emissions from the object at the range of angles of incidence and in mid-IR wavelengths.