Adaptive covers for combined radiative cooling and solar heating. A review of existing technology and materials

Vilà, Roger; Martorell, Ingrid; Medrano Martorell, Marc; Castell, Albert

doi:https://doi.org/10.1016/j.solmat.2021.111275

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Issue date

2021-09-15

Author

Vilà, Roger

Martorell, Ingrid

Medrano Martorell, Marc

Castell, Albert

Suggested citation

Vilà, Roger; Martorell, Ingrid; Medrano Martorell, Marc; Castell, Albert; . (2021) . Adaptive covers for combined radiative cooling and solar heating. A review of existing technology and materials. Solar Energy Materials and Solar Cells, 2021, vol. 230, 111275. https://doi.org/10.1016/j.solmat.2021.111275.

Abstract

Radiative cooling is a promising technology for space cooling. This technology can be combined with solar heating applications, enabling the production of both energy demands -heat during daytime and cold during nighttime- in a single device; thus, reducing the non-renewable primary energy consumption for space conditioning and domestic hot water. Radiative cooling and solar heating appear in different wavelength ranges, 8-14 μm and 0.25-2.5 μm respectively, thus the device must be able to switch between ranges in each mode. An adaptive cover placed on top of the radiator/absorber can provide this switch by combining materials with suitable optical properties for each mode. Another effect derived from the usage of covers is the reduction of convective heat losses, enhancing the performance of the device. This paper aims to review the existing materials used in solar collectors, and radiative coolers as well as available smart materials used in other fields for its potential use as adaptive covers for combined radiative cooling and solar heating applications.

URI

http://hdl.handle.net/10459.1/71574

DOI

https://doi.org/10.1016/j.solmat.2021.111275

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Solar Energy Materials and Solar Cells, 2021, vol. 230, 111275

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Except where otherwise noted, this item's license is described as cc-by-nc-nd (c) Elsevier, 2021