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Applications of Low-Emissivity Hybrid Insulation in South Korea
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作者 Young Cheol Kwon 《Journal of Power and Energy Engineering》 2016年第7期8-14,共7页
Low-Emissivity Hybrid Insulation has been developed in South Korea. It combines both resistive and reflective insulating principle. It is composed with many layers of reflective aluminum foils and honeycomb-structure ... Low-Emissivity Hybrid Insulation has been developed in South Korea. It combines both resistive and reflective insulating principle. It is composed with many layers of reflective aluminum foils and honeycomb-structure air cells with polyethylene foam. This paper introduces recent South Korean building insulation code and the applications of Low-Emissivity Hybrid Insulation to meet the code. 展开更多
关键词 low-emissivity Hybrid Insulation Building Energy Saving Building Insulation Code Insulation Application Overall Thermal Transmittance
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Application of low-emissivity Pt layer on Ni alloy to high temperature 被引量:2
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作者 Zhibin HUANG Wancheng ZHOU Xiufeng TANG 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2010年第1期1-7,共7页
Platinum films were sputter-deposited on two groups of nickel alloy substrates, in which the first group was the samples with rough surface, and the other group with polished surface. The platinum thin-films were appl... Platinum films were sputter-deposited on two groups of nickel alloy substrates, in which the first group was the samples with rough surface, and the other group with polished surface. The platinum thin-films were applied to serve as the low-emissivity layers to reflect thermal radiation. Then, the platinum-coated samples were heated in air at 600 ℃ for 200 h to explore the effect of high-temperature environment on the emissivity of coated platinum film. After annealing, the average IR emissivity (at the wavelength of 3-14 μm) of the platinum film was only about 0.1 for polished sample and 0.45 for rough sample. The diffusion between platinum and the nickelalloy elements at 600 ℃ had been also discussed. 展开更多
关键词 low-emissivity layer Platinum film Infrared emissivity
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Highly spatial and temporal bottom-up vehicle emission characterization and its control in a typical ecology-preservation area
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作者 Pengju Bie Fanyuan Deng +5 位作者 Bi Chen Li Wang Fan Yang Jianguo Zhou Huan Liu Kebin He 《Eco-Environment & Health》 2022年第3期156-164,共9页
The Chishui River Valley is a microscale ecology-preservation area with industrial clusters.The significance of evaluating vehicular emissions has been gradually highlighted with the rapid development of the local tra... The Chishui River Valley is a microscale ecology-preservation area with industrial clusters.The significance of evaluating vehicular emissions has been gradually highlighted with the rapid development of the local transportation and tourism sectors.This study provides the first estimates based on both bottom-up and top-down approaches.The annual total emissions of CO,NOx,hydrocarbons(HC),PM10,and PM2.5 in 2019 were 347.8,189.6,46.3,6.9,and 6.3 Mg,respectively.Trucks contributed the most(55%)to the NOx emissions,followed by heavy-duty passenger vehicles(26%).In contrast,light-duty passenger vehicles and motorcycles generated 75%of the HC emissions.The superior accuracy of highly spatial and temporal bottom-up estimates versus top-down estimates is validated by the similar variation trends of hourly emission intensities and enhanced concentrations relative to background observations for both NOx and CO,with Pearson correlation coefficients between the intensities and concentrations ranging from 0.79 to 0.85.Historical HC emissions peaked in 2013,followed by a sharp decline in 2014 and a continuous rise since then,whereas NOx emissions have kept increasing since 2010.These indicated the necessity and urgency of effective vehicular emission mitigations.Based on scenario analysis,traffic restrictions combined with upgrading the emission standards of admitted vehicles will possess huge emission reduction potentials.Future recommendations about establishing a low emission zone in the valley and supporting policies were introduced. 展开更多
关键词 Vehicle Emission Bottom-up method Ecology-preservation Mitigation low-emission zone
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