Preliminary development of emissivity measurement system at low temperature based on radiometric method

Zhao, Yuchen; Li, Xu; Zhang, Hengcheng; Shen, Faxin; Huang, Chuanjun; Liu, Huiming; Qi, Haoying; Huang, Zijian; Zhang, Geng; Xin, Jijun; Wang, Wei; Li, Laifeng

doi:10.1016/j.cryogenics.2023.103671

Cited by 5 publications

(1 citation statement)

References 13 publications

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“…The sample's role as either the radiator or absorber depends on the known radiative properties of the other components. By measuring the heat transfer from the radiator to the absorber, it is possible to calculate the radiative properties and the total hemispherical emissivity of the sample [62]. Radiometric methods use radiometric instruments to directly measure the radiative properties of a sample.…”

Section: Solar Reflectivity Measurements Of Building Envelope Materialsmentioning

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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Section: Solar Reflectivity Measurements Of Building Envelope Materialsmentioning

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

View full text Add to dashboard Cite

show abstract

Low emissivity thin film coating on glass fiber reinforced plastic used for cryogenic application

Kumar,

Vaghela,

Koshy

et al. 2024

J Mater Sci: Mater Electron

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Progress in measuring techniques and thermal radiative properties of metals at cryogenic temperatures: A review

Hashmi,

Wang,

Saadat

et al. 2024

Cryogenics

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Preliminary development of emissivity measurement system at low temperature based on radiometric method

Cited by 5 publications

References 13 publications

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

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

Low emissivity thin film coating on glass fiber reinforced plastic used for cryogenic application

Progress in measuring techniques and thermal radiative properties of metals at cryogenic temperatures: A review

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