Incorporation form-stable phase change material with passive radiative cooling emitter for thermal regulation

Tao, Shuang; Wan, Qizhong; Xu, Ying; Gao, Dongshan; Fang, Zhenggang; Ni, Yaru; Fang, Liang; Lu, Chunhua; Xu, Zhongzi

doi:10.1016/j.enbuild.2023.113031

Cited by 8 publications

(4 citation statements)

References 47 publications

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“…23 Also, Tao et al utilized the PCM dodecanol and a porous nickel foam to form a smart cooling material, which conserves heat in cold environments and rejects heat in hot environments. 24 For a passive cooling material applied externally on a structure, the net cooling power density can be described as…”

Section: ■ Introductionmentioning

confidence: 99%

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Nanofibrous Biomaterial-Based Passive Cooling Paint Structurally Linked by Alkane-Oleate Interactions

Caratenuto,

Leach,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

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Passive radiative cooling materials, which provide cooling without consuming electricity, are widely recognized as an important technology for reducing greenhouse gas emissions and delivering thermal comfort to less industrialized communities. Optimizing thermal and optical properties is of primary importance for these materials, but for real-world utilization, ease of application and scalability also require significant emphasis. In this work, we embed the biomaterial hydroxyapatite, in the form of nanoscale fibers, within an oil-based medium to achieve passive cooling from an easy-to-apply paint-like solution. The chemical structure and bonding behaviors of this mixture are studied in detail using FTIR, providing transferable conclusions for pigment-like passive cooling solutions. By reflecting 95% of solar energy and emitting 92% of its radiative output through the atmospheric transparency window, this composite material realizes an average subambient cooling performance of 3.7 °C in outdoor conditions under a mean solar irradiance of 800 W m–2. The inflammability of the material provides enhanced durability as well as unique opportunities for recycling which promote circular economic practices. Finally, the surface structure can be easily altered to tune bonding behaviors and hydrophobicity, making it an ideal passive cooling coating candidate for outdoor applications.

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Section: ■ Introductionmentioning

confidence: 99%

“…The same PCM was used by Wang and co-workers within a multilayer structure, who demonstrated the concept for passively switching smart windows . Also, Tao et al utilized the PCM dodecanol and a porous nickel foam to form a smart cooling material, which conserves heat in cold environments and rejects heat in hot environments …”

Section: Introductionmentioning

confidence: 99%

Nanofibrous Biomaterial-Based Passive Cooling Paint Structurally Linked by Alkane-Oleate Interactions

Caratenuto,

Leach,

Liu

et al. 2024

ACS Appl. Mater. Interfaces

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“…Recently, passive radiative cooling (RC) technology is widely investigated as a promising strategy to drop the temperature with zero energy consumption. − The cooling performance of an object is usually restricted by solar irradiation (mainly concentrating in the visible and near-infrared region), which brings huge heat to the object. − Meanwhile, due to the synergistic effect of the molecules in the atmosphere, the infrared radiative heat dissipation is impeded from reaching the outer space, whereas in the range of 8∼13 μm, which is called an atmospheric window, infrared thermal radiation can easily pass the atmosphere. − Thus, passive RC can achieve subambient cooling all around the day by maximizing both the sunlight reflection and infrared emission within 8∼13 μm. − Until now, dielectric spheres, bionic structure, paints, ,, and other kinds of materials has been widely used in the RC. Among various kinds of RCs, polymer-based RC emitters stands out for its unique merits such as superior cooling capability, low cost, and excellent scalability. − Hence, it offers a new promising approach for prolonging food preservation in the gaps of cold chain logistics.…”

Section: Introductionmentioning

confidence: 99%

Construction of a Robust Radiative Cooling Emitter for Efficient Food Storage and Transportation

Tao,

Cai,

Han

et al. 2024

ACS Appl. Mater. Interfaces

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Nowadays, food safety is still facing great challenges. During storage and transportation, perishable goods have to be kept at a low temperature. However, the current logistics still lack enough preservation ability to maintain a low temperature in the whole. Hence, considering the temperature fluctuation in logistics, in this work, the passive radiative cooling (RC) technology was applied to package to enhance the temperature control capability in food storage and transportation. The RC emitter with selective infrared emission property was fabricated by a facile coating method, and Al 2 O 3 was added to improve the wear resistance. The sunlight reflectance and infrared emittance within atmospheric conditions could reach up to 0.92 and 0.84, respectively. After abrasion, the sunlight reflection only decreased by 0.01, and the infrared emission showed a negligible change, revealing excellent wear resistance. During outdoor measurement, the box assembled by RC emitters (RC box) was proved to achieve temperature drops of ∼9 and ∼4 °C compared with the corrugated box and foam box, respectively. Besides, the fruits stored in the RC box exhibited a lower decay rate. Additionally, after printing with patterns to meet the aesthetic requirements, the RC emitter could also maintain the cooling ability. Given the superior optical properties, wear resistance, and cooling capability, the emitter has great potential for obtaining a better temperature control ability in food storage and transportation.

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“…Combining phase change materials (PCM) with the SRCE shows great potential for use in a wide range of climate conditions. [137]…”

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confidence: 99%

Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review

Ziaeemehr,

Jandaghian,

et al. 2023

Buildings

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The Urban Heat Island (UHI), a consequence of urban development, leads to elevated temperatures within cities compared to their rural counterparts. This phenomenon results from factors such as urban designs, anthropogenic heat emissions, and materials that absorb and retain solar radiation in the built environment. Materials commonly used in cities, like concrete, asphalt, and stone, capture solar energy and subsequently emit it as heat into the surroundings. Consequently, this phenomenon amplifies summertime cooling energy demands in buildings. To mitigate the UHI impacts, various mitigation strategies have emerged that include but are not limited to using higher solar reflectivity materials, known as “cool materials”, and increasing vegetation and greenery in urban areas. Cool materials have high reflectivity and emissivity, effectively reflecting solar radiation while emitting absorbed heat through radiative cooling. Increasing the solar reflectivity of building envelope materials is a promising sustainable solution to lessen the UHI effects. This state-of-the-art review summarizes the UHI causes and effects, states the mitigation strategies, describes the cool building envelope materials, explains the solar reflectivity index measurements, indicates the building and micro-climate simulations, highlights the performance evaluation of using cool building envelope materials, points out the research gaps, and proposes future research opportunities.

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Incorporation form-stable phase change material with passive radiative cooling emitter for thermal regulation

Cited by 8 publications

References 47 publications

Nanofibrous Biomaterial-Based Passive Cooling Paint Structurally Linked by Alkane-Oleate Interactions

Nanofibrous Biomaterial-Based Passive Cooling Paint Structurally Linked by Alkane-Oleate Interactions

Construction of a Robust Radiative Cooling Emitter for Efficient Food Storage and Transportation

Increasing Solar Reflectivity of Building Envelope Materials to Mitigate Urban Heat Islands: State-of-the-Art Review

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