ACS Applied Polymer Materials
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2024
·
IF 4.4
Minzhi Chen,Chunlin Fan,Minghao Zhu,Nana Pan,Qi Quan,Xiaoyan Zhou
Wood-based phase change materials (WBPCM) have the potential to significantly reduce energy consumption in plywood structures, but the quest for a streamlined production strategy to facilitate their industrialization remains a formidable challenge. In this work, phase change plywood (PCP) was prepared by phase change adhesive (PCA), in which urea-formaldehyde resin (UF) served as the adhesive and different contents of paraffin wax (PW) as phase change materials (PCM). The use of PCA enabled the efficient and simplified production of wood-based composites with excellent energy-saving properties. By combination of the low thermal conductivity of wood with the energy storage capabilities of PCA, PCP demonstrated a high latent heat capacity of 67.53 J/g at 47.6 °C. 2D correlation Fourier transform infrared (2D FTIR) was carried out to analyze the phase transition mechanism. By adding PCA, the heat transfer time of PCP-3 from 40 to 55 °C was extended by 181%, compared with conventional plywood, which indicated an excellent energy-saving ability. Furthermore, finite element simulation was conducted to statistically simulate the thermal transition process of PCP. Our work presents a strategy for the design of phase change plywood with excellent energy-saving properties, while also enabling large-scale production.
研究领域:
材料科学
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能源工程
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2024
·Vol. 17
·期 1
·1-16
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IF 31.6
Huang Zekun,Peng Yutao,Zhao Jing,Zhang Shengliang,Qi Penglu,Qu Xianlin,Yan Fuqiang,Ding Bing,Xuan Yimin,Zhang Xiaogang
A flexible dual-band electrochromic device with a high optical modulation and a long cycle life was reported.
The device assembled can modulate the visible light and near-infrared independently and effectively, showing higher energy-saving performance than commercial low-emissivity glass in most climatic zones around the world.
The flexible device also shows good energy storage and energy recycling performances, recycling 51.4% of the energy consumed in the coloration process for local reusing.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY AND BUILDINGS
·
2023
·
IF 6.7
Shuang Tao,Qizhong Wan,Ying Xu,Dongshan Gao,Zhenggang Fang,Yaru Ni,Liang Fang,Chunhua Lu,Zhongzi Xu
Passive radiative cooling (RC) can remove heat without any external energy. Nonetheless, it would bring redundant heating energy consumption under low temperature. In this work, dynamic radiative cooling material consisting selective super-hydrophobic radiative cooling emitter (SRCE) and phase change material (PCM) was proposed. PCM (dodecanol) was vacuum-impregnated into porous nickel foam (PCM@NF), and then stitched with SRCE (PCM@NF@SRCE). PCM@NF had the phase change temperature near the comfort temperature for human body (∼25 ℃) and large latent heat. Moreover, the SRCE has high solar reflectivity (0.93) and superb selective emission property (emissivity in atmospheric window : 0.83, emissivity outside atmospheric window: 0.49). Besides, the SRCE exhibited excellent super-hydrophobicity (162.2°), mechanical robustness and UV resistance. During outdoor measurement, the PCM@NF@SRCE achieved better sub-ambient cooling under hot weather while kept higher temperature in cold weather compared with bare SRCE. In addition, the energy saving simulation verified the energy saving performance of the PCM@NF@SRCE in both hot and cold weather. The integration of PCM and SRCE shows promising application in various climates.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ENERGY AND BUILDINGS
·
2023
·
IF 6.7
YingJie Wu,Bin Liu,RenYan Zhang,Tao Yu,MingBo Pu,Xiong Li,XiaoLiang Ma,YongCai Guo,XianGang Luo
Traditionally, the passive radiative cooling materials (PRCMs) researches focus on optimizing the cooling power by spontaneously increasing sunlight reflectivity and infrared emissivity. However, the resultant overcooling in winter will increase the construction heating costs. Here, temperature-adaptive porous polymer radiative cooling coatings (TA-PRCMs) were developed from an all-season thermal management perspective, which can adaptively adjust the sunlight reflectivity according to ambient temperature. The fabricated porous polymer coatings switch from the colorless phase to the colored phase, when the ambient temperature is lower than the transition temperature, with the solar reflectance of black, rose red, orange, violet, blue and yellow coatings changed from 0.85, 0.9, 0.92, 0.9, 0.75 and 0.9 to 0.6, 0.7, 0.73, 0.67, 0.62, and 0.86, respectively. The outdoor temperature tests show that the average and maximum daily surface temperatures of the black sample are up to 2.7 °C and 4.7 °C higher than superior performance hierarchically porous radiative cooling (HPRC) film on a winter day. Energy consumption simulations show that the energy-saving performance of TA-PRCMs coatings outperforms the HPRC film in most cities of China with various climates. Such as in Lhasa, China, the black color coating can save up to 5000 ∼ 6000 kWh for a two-story office building.
研究领域:
材料科学
·
能源工程
✓ 已验证
DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Ying Zhang,Ping He,Lianhong Zhou,Faqin Dong,Dingming Yang,Hong Lei,Licheng Du,Lingpu Jia,Shiping Zhou
The presence of pesticides in water has emerged as a momentous environmental issue over the past decades. Herein, a terbium doped Ti/PbO 2 (denoted as Ti/PbO 2 –Tb) dimensionally stable Ti/PbO 2 –Tb anode has been successfully prepared by one-step electrodeposition path for electrocatalytic degradation of imidacloprid (IMD) wastewater with high efficiency. Ti/PbO 2 –Tb electrode presents higher oxygen evolution potential, lower charge transfer resistance, stronger stability, longer service lifetime and outstanding electrocatalytic activity than Ti/PbO 2 electrode. The optimum condition for IMD oxidation is obtained by analyzing the effects of some critical operating parameters including temperature, initial pH, current density and electrolyte concentration. It is proved that 70.05% of chemical oxygen demand and 76.07% of IMD are removed after 2.5 h of degradation under current density of 8 mA cm −2 , pH 9, temperature 30 °C and 7.0 g L −1 NaCl electrolyte. In addition, the electrode displays commendable energy saving property as well as favorable reusability. The degradation mechanism of IMD is proposed by analyzing the intermediates identified by LC-MS. The present research provides a feasible strategy to degrade IMD wastewater by Ti/PbO 2 –Tb electrode.
研究领域:
环境科学
·
电化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）