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Tingsheng Zhang,Minfeng Tang,Hai Li,Jingbo Li,Yingquan Zou,Yajia Pan,Zutao Zhang 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.2
There is a large amount of inertial kinetic energy wasted during the driving of new energy driverless buses. In this paper, a novel multidirectional pendulum kinetic energy harvester, based on homopolar repulsion, is designed for low-powered sensors in new-energy driverless buses. The proposed system consists of three main components: kinetic energy harvest module, energy conversion module and power storage module. The kinetic energy harvest module includes a multidirectional capture mechanism and a deformation amplification mechanism, which captures the acceleration direction of the vehicle, and harvests the inertial kinetic energy through the pendulum swinging respectively. In the energy conversion module, deformation of the piezoelectric beam generates electricity, due to homopolar repulsion from the magnets on the pendulum and piezoelectric beam. The power storage module stores electricity in supercapacitors to power the inertial measurement unit, acceleration sensor and other low-power sensors. The proposed system has completed simulation analysis and prototype tests, which show that the system featuring voltage of 13.6 V and power of 1.233 mW, illustrating the feasibility of self-powered applications in low-power sensors for new energy driverless buses.
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Tingsheng Qiu,Yuanqing He,Xianhui Qiu,Xiuli Yang 한국공업화학회 2017 Journal of Industrial and Engineering Chemistry Vol.45 No.-
Density functional theory calculations,flotation behavior, X-ray photoelectron spectroscopy, and infraredspectra were combined to reveal the Cu2+ activation mechanism on a cyanide (CN )-leached sphaleritesurface. Low CN adsorption enhanced the activation capability of Cu2+ on the sphalerite surface,whereas the hydrophilicity of the sphalerite increased with increasing CN coverage, which hindered Cu2+ adsorption. As the amount of chemically adsorbed Cu2+ on the sphalerite surface increased, Cu2+ beganto desorb CN , leading to the same result, which is consistent with the low CN coverage.
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Application of amine-loaded activated carbon fiber in CO2 capture and separation
Haoran Liu,Xinmei Lu,Liying Liu,Jian Wang,Pengyu Wang,Peng Gao,Tingsheng Ren,Guo Tian,Di Wang 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.9
The CO2 emitted by coal-fired power plants is the main factor leading to global warming, and the captureof CO2 in the flue gas of power plants is still the main task at this stage. Many adsorbents have been developed to captureCO2 in high-temperature flue gas, but some materials are complicated to synthesize or the cost is too high. Here,we used low-cost raw materials activated carbon fiber and PEI, and used green synthesis to synthesize new adsorbentsin order to capture CO2 in high-temperature flue gas of a power plant. To improve the performance of highly porousactivated carbon fiber (ACF) in CO2 capture and separation, an organic polymer polyethylenimine (PEI) was loadedsuccessfully into the oxidized ACF. The modified adsorbent was tested by FT-IR, XRD and SEM, and the CO2 adsorptioncapacity and CO2/N2 selectivity were analyzed. The results showed that the as-synthesized PEI-modified adsorbenthas a CO2 adsorption capacity of 2.5mmol/g, which is 1.7 times better than that of the pristine ACF adsorbent(1.5mmol/g), at 1 bar and 333 K, and it has excellent CO2/N2 selectivity, as calculated by ideal adsorption solution theory(IAST). These data indicate that PEI was loaded successfully into the oxidized ACF. In addition, the dual site Langmuirisotherm equation and Langmuir isotherm equation can be in good agreement with the adsorption curves ofCO2 and N2. In comparison with other composite adsorbents, the preparation process of the present new adsorbent ishighly environmentally friendly, the synthesis method is simple and the cost is low, which demonstrates potential applicationsin the separation of CO2 from the flue gas of power plants.
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