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| 1 | Investigation of Vapor-liquid Ejector with Organic Working Fluids显示文摘The vapor-liquid ejector is a simply flow device and driven by thermal energy. In this paper, a modified mathematical model of the vapor-liquid ejector is proposed, and the validation shows good agreements with the experimental data. A study is carried out with six organic working fluids, namely R1233 zd(E), R1336 mzz(Z), R236 ea, R245 ca, R245 fa and R365 mfc. The influences of the entrainment ratio, the area ratio, the superheating at the vapor nozzle inlet, the subcooling at the liquid nozzle inlet, and the pressures at these inlets on the pressure lifting are parametrically investigated. An increase in the subcooling leads to the great increasing of pressure lifting and the superheating has slight effect on the pressure lifting, whereas others have the opposite tendency. The studies of the pressures and temperatures at the typical locations inside the vapor-liquid ejector are further conducted by using R1336 mzz(Z). The results show that the above parameters have great influence on these pressures and temperatures inside except that the pressures are insignificantly impacted by the superheating, and the temperatures are negligibly affected by the area ratio. R1336 mzz(Z) is recommended as a good working fluid for the vapor-liquid ejector. | CHEN Jianyong HUANG Yisheng NIU Zhiting LUO Xianglong CHEN Ying YANG Zhi | 2019 | Journal of Thermal Science2019，28，1： | 1 |
| 2 | Research on Fuel Cell Technology of Electric Vehicle显示文摘With the growing shortage of energy and environmental pollution problems,the community on the car's efficient,clean,economic and security put forward higher requirements.This paper introduces the history of fuel cell vehicles,the classification of electric vehicles,the fuel cell electric vehicle technology,the classification of fuel cells,the problems existing in fuel cell technology and the urgent need to be solved,and the development prospects of fuel electric vehicles,analyzes the fuel cell electric the key technology of automobile in development and application needs to be solved.Pointed out that the fuel cell as a new energy,with its high effi ciency and zero pollution and other advantages of increasing attention,fuel cell electric vehicles and its technology has also been more widely applied and developed. | Zhanning Yu Yuyan Luo Zhiting Shen | 2017 | Vehicle Dynamics2017，1，1： | 0 |
| 3 | Improving open-circuit voltage and short-circuit current of high-efficiency silicon-based planar heterojunction solar cells by combining V_(2)O_(5)with PEDOT:PSS显示文摘In recent years,a novel PEDOT:PSS/n-Si planar heterojunction solar cell has been extensively studied in the photovoltaic field.Different V_(2)O_(5)-IPA concentrations mixed in PEDOT:PSS samples as hole transport layer were prepared by means of spin coating technique and mechanical mixing of organic and inorganic materials.V_(2)O_(5)was studied for its effects on the surface morphology,chemical composition,and optical transmittance of PEDOT:PSS films.The findings of the study show that the addition of V_(2)O_(5)particles changes the surface morphology of PEDOT:PSS films and promotes its superior ohmic contact with the Si interface.Furthermore,PEDOT:PSS incorporated with V_(2)O_(5)particles that have outstanding optical and semiconductor properties reduces the rate of carrier recombination at the device interface and blocks electron transport to the anode in the fabricated Si-based solar cells.When compared to conventional PEDOT:PSS/Si planar heterojunction solar cells,the fill factor,photoelectric conversion efficiency,open-circuit voltage,and short-circuit current density of the devices prepared in this study can be significantly improved,reaching up to 70.98%,15.17%,652 mV and 32.8 mA/cm^(2),respectively.This research provides a promising and effective method for improving the photoelectric conversion performance of PEDOT:PSS/Si heterojunction solar cells,which enables the application of V_(2)O_(5)in Si solar cells. | Zhiting Luo Chen Yang Xiuhua Chen Wenhui Ma Shaoyuan Li Kaixin Fu | 2023 | Journal of Materiomics2023，9，3： | 0 |
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