Greatly improved heat-shielding performance of KxWO3 by trace Pt doping for energy-saving window glass applications

Ran, Shuai; Liu, Jingxiao; Shi, Fei; Fan, Chuanyan; Chen, Bin; Zhang, Heming; Yu, Ling; Su-hua, Liu

doi:10.1016/j.solmat.2017.08.013

Cited by 55 publications

(27 citation statements)

References 30 publications

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“…We should therefore consider total energy consumption, including HVAC and lighting, to determine whether DGC is used. To lower energy consumption of HVAC, windows that have a high performance in heat shield should be introduced.…”

Section: Discussionmentioning

confidence: 99%

Experimental evaluation for daylight‐linked gradation lighting control using image‐based motion sensors

Futagami

Yano

Huang

et al. 2020

IEEJ Transactions Elec Engng

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In this study, we propose a daylight‐linked gradation lighting control, which adjusts the dimming level of a light above an occupant according to daylight and also gradually lowers the dimming level of surrounding lights based on the distance from the occupants by using image‐based motion sensors. We evaluated it in terms of both energy savings and visual comfort of the occupants in comparison experiments. Compared with the individual occupancy control (IC), the actual and simulated median energy savings of daylight‐linked gradation control (DGC) were 27.1 and 28.9%, respectively, per day. The results of a questionnaire consisting of seven questions and using a semantic differential method for scoring visual comfort showed that the DGC tended to improve visual comfort compared with the IC. Further experiments, however, are needed as only four of nine occupants responded to the questions. In addition, we found that the DGC creates a smoother contrast in the office than the IC, which may produce conspicuous changes in illumination intensity. Finally, we analyzed the advantages and disadvantages of the DGC on the basis of our experimental results. © 2020 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.

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Section: Discussionmentioning

confidence: 99%

Experimental evaluation for daylight‐linked gradation lighting control using image‐based motion sensors

Futagami

Yano

Huang

et al. 2020

IEEJ Transactions Elec Engng

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“…Process I refers to the transition of electrons from the valence band (VB) to polaron states and from polaron states to CB by absorbing suitable NIR. Besides, small polaron transfers between two adjacent nonequivalent W sites after absorbing NIR, [ 7 ] i.e., Process II, as follows:

Process II : italichv + W_{(A)}^{5 +} + W_{(B)}^{6 +} \to W_{(A)}^{6 +} + W_{(B)}^{5 +} + E_{phonon}

…”

Section: Design Conceptmentioning

confidence: 99%

“…Therefore, preparing transparent heat insulation materials with excellent NIR shielding ability and high visible light transmittance, which can be used in the traditional glasses, is an important way to reduce the indoor temperature during summer and the corresponding energy consumption by air‐conditioning. [ 7,8 ]…”

Section: Introductionmentioning

confidence: 99%

“…Note also that ITO and ATO can only block NIR in the wavelength range of 1100–2500 and 1400–2500 nm, respectively. [ 7 ] LaB 6 nanoparticles have been widely studied because of its local surface plasmon resonance (LSPR) effect, which can shield the thermal radiation in the NIR region. Tang et al [ 17 ] synthesized LaB 6 @SiO 2 nanoparticles with a core‐shell structure by simple sol‐gel method and introduced them into poly (vinyl butyral) (PVB) matrix to prepare LaB 6 @SiO 2 ‐PVB nanocomposite film, which significantly enhanced the thermal insulation stability and visible light transmittance of the nanocomposite film.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of PVC/Cs_xWO₃ composite film with excellent near‐infrared light shielding and high visible light transmission

Mao

Yang

et al. 2021

Vinyl Additive Technology

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Near‐infrared (NIR) shielding is essential not only in the building and automobile glass films but also in achieving energy conservation. However, effectively shielding NIR and maintaining high transmittance in the visible light region have been great challenges in the past decade. Recently, hexagonal cesium tungsten bronze (CsxWO3) nanoparticles have been widely studied due to the excellent transparency in the visible light region and strong heat‐shielding ability in the NIR region. Herein, a design concept of transparent polyvinyl chloride (PVC)/CsxWO3 composite film, as a heat insulation material for glasses, was proposed. To achieve this purpose, the PVC/CsxWO3 composite film was prepared by incorporating CsxWO3 slurry with better dispersion than traditional CsxWO3 nanoparticles powder into a transparent PVC matrix. By the UV‐Vis‐NIR spectrophotometer characterization, the PVC/CsxWO3 composite film containing 2.1 phr CsxWO3 slurry displays high blocking of NIR (78%) and high transmittance of visible light (76%). In order to further understand the actual heat insulation effect from the PVC/CsxWO3 composite films, the indoor sunlight simulation test and outdoor cooling experiment with solar illumination variations were carried out, which both showed heat insulation that is superior to the antimony tin oxide and indium tin oxide thin films prepared in our previous work. In addition, the mechanical property of PVC/CsxWO3 composite films shows almost no change with the increase of CsxWO3 slurry. The PVC/CsxWO3 composite films simultaneously achieve excellent shielding of NIR and high transmittance of visible light, which makes it an ideal material to alleviate the current building energy consumption issues.

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“…As is well known, near infrared (780-2500 nm) energy accounts for about 50% of the solar radiation spectrum, and ordinary window glass hardly has near infrared shielding ability. 1 In general, coating or sticking a transparent heat-insulation lm 2,3 on the glass surface is an effective way to achieve energy-saving building window glass. At present, there have been many reports about inorganic functional particles used for preparing transparent heat-insulating lms such as indium tin oxide (ITO), 4,5 antimony doped tin oxide (ATO), 6 VO 2 (ref.…”

Section: Introductionmentioning

confidence: 99%

Facile synthesis of urchin-like Cs_xWO₃particles with improved transparent thermal insulation using bacterial cellulose as a template

et al. 2019

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Greatly improved heat-shielding performance of KxWO3 by trace Pt doping for energy-saving window glass applications

Cited by 55 publications

References 30 publications

Experimental evaluation for daylight‐linked gradation lighting control using image‐based motion sensors

Experimental evaluation for daylight‐linked gradation lighting control using image‐based motion sensors

Preparation and characterization of PVC/Cs_xWO₃ composite film with excellent near‐infrared light shielding and high visible light transmission

Facile synthesis of urchin-like Cs_xWO₃particles with improved transparent thermal insulation using bacterial cellulose as a template

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Greatly improved heat-shielding performance of KxWO3 by trace Pt doping for energy-saving window glass applications

Cited by 55 publications

References 30 publications

Experimental evaluation for daylight‐linked gradation lighting control using image‐based motion sensors

Experimental evaluation for daylight‐linked gradation lighting control using image‐based motion sensors

Preparation and characterization of PVC/CsxWO3 composite film with excellent near‐infrared light shielding and high visible light transmission

Facile synthesis of urchin-like CsxWO3particles with improved transparent thermal insulation using bacterial cellulose as a template

Contact Info

Product

Resources

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Preparation and characterization of PVC/Cs_xWO₃ composite film with excellent near‐infrared light shielding and high visible light transmission

Facile synthesis of urchin-like Cs_xWO₃particles with improved transparent thermal insulation using bacterial cellulose as a template