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1. Study on Influencing factors of power supply efficiency of photoelectric building based on SEM | |||
Li Meng,Zhang Haibo | |||
Energy Science and Technology 06 January 2023 | |||
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Abstract:Energy saving and carbon reduction in buildings is the key link for our country to achieve "carbon peak" and "carbon neutral" goals, and the important way to develop high-quality and large-scale application of photovoltaic power generation. Through the collection and collation of relevant literature, this paper systematically analyzes the factors affecting the power supply efficiency of photoelectric buildings, and uses Likert scale to compile and distribute questionnaires. Based on the structural equation model, the data were collected and screened by SPSS22 and AMOS26 software. The data were processed and a model was established to identify the main factors affecting the energy supply efficiency of photovoltaic buildings. The model results show that the first-order indicators that should be paid attention to are module conversion efficiency and mechanical load, whose first-order weight coefficient is 0.254, indicating that the module power attenuation loss and dust occlusion loss are relatively serious in the process of converting light energy into electric energy. The energy conversion efficiency of photovoltaic buildings can be improved by strengthening the control of key factors. The research on the influencing factors of the power supply efficiency of photoelectric buildings is of great significance to achieve the goal of "carbon peak" and "carbon neutrality" | |||
TO cite this article:Li Meng,Zhang Haibo. Study on Influencing factors of power supply efficiency of photoelectric building based on SEM[OL].[ 6 January 2023] http://en.paper.edu.cn/en_releasepaper/content/4758784 |
2. A study for low-cost small power wind turbine systems | |||
DAI Ping,SHI Weifeng,CHEN Jieshi | |||
Energy Science and Technology 26 February 2013 | |||
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Abstract:This paper presents a new control algorithm for low-cost small power wind turbine systems with topology which consists of wind turbine, directly coupled permanent synchronous generator, rectifier, boost circuit and resistive load. The system structure and characteristics are studied and analyzed in the paper. The control strategy for generator side converter is based on extracting the maximum mechanical power from the wind turbine and sliding mode control for boost circuits. Simulation results validate and confirm the effectiveness of the proposed control algorithm. | |||
TO cite this article:DAI Ping,SHI Weifeng,CHEN Jieshi. A study for low-cost small power wind turbine systems[OL].[26 February 2013] http://en.paper.edu.cn/en_releasepaper/content/4521564 |
3. Preparation of a Novel TiO2 Array-Cluster Film for Dye-sensitized Solar Cells by Hydrothermal Reaction | |||
QIN Haiyang,ZHUANG Jia | |||
Energy Science and Technology 13 April 2012 | |||
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Abstract:In this work, one type of novel and thick TiO2 array-cluster film was prepared with hydrothermal method which was low cost and simple. It was found that this type of TiO2 film grew on the FTO substrate was a structure of two-layer and had the tetragonal rutile phase from the FESEM images and the XRD patterns. However, the subjacent layer of the two layers was TiO2 array, while the supernatant layer was TiO2 clusters, and both of them were formed from TiO2 rods which developed from finer TiO2 nanorods. The thickness of this type of TiO2 film could reach to 22.9μm, and without any modification treatment, a light-to-electricity conversion efficiency of 1.24% was achieved by using 22.9μm-thick TiO2 array-cluster film which was prepared under the 0.06mol/L-dosage of tetrabutyl titanate (TBOT), at 140℃ for 72h and the FTO substrates placed at 180-degree angle as the photoanode in a DSSC. | |||
TO cite this article:QIN Haiyang,ZHUANG Jia. Preparation of a Novel TiO2 Array-Cluster Film for Dye-sensitized Solar Cells by Hydrothermal Reaction[OL].[13 April 2012] http://en.paper.edu.cn/en_releasepaper/content/4474443 |
4. Study on water saturation in oil-water fluid flow area | |||
Liu Zhibin,Liu Haohan | |||
Energy Science and Technology 01 December 2011 | |||
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Abstract:Studying on water saturation distribution in oil-water fluid flow area is meaningful to the high, stabilized production and improvement of ultimate recovery. In this paper, by introducing relational expression between relative permeability and water saturation to the fractional flow equation, we get an expression between water cut and water saturation; By combining differentiation of water cut to the expression, we get a three dimensional (3D) equation between water saturation, distance and time; After expanding it with Taylor expansion and solving it with Vieta's Theorem, we find the distribution of water saturation related to time and distance in oil-water fluid flow area; By applying this formula to certain sandstone reservoir in China, we get the water saturation distribution in 100 days and 200 days and drew corresponding figures. | |||
TO cite this article:Liu Zhibin,Liu Haohan. Study on water saturation in oil-water fluid flow area[OL].[ 1 December 2011] http://en.paper.edu.cn/en_releasepaper/content/4452311 |
5. The method to Evaluate Energy Value of Biofuel | |||
huang weidong,wu chundu,xia weidong,lili ding,shen xiansheng | |||
Energy Science and Technology 22 May 2008 | |||
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Abstract:Present evaluation of biofuel gives little positive to negative net energy value of corn ethanol. It caused a lot of debates about the energy return on investment of ethanol. We redefine and evaluate Net Energy Value (NEV) of bioethanol, based on the energy input data in literature after changing the usage of the unfermented residue to simulate the future which maximizes the energy value of the biomass; and the energy is sorted as fuel, heat and electricity to solve the quality difference of input energy. We estimate NEV from 14 studies about bioethanol and petroleum. The results show that the net energy value for all bioethanol is very positive and not greatly influenced by single factor, but increase at low ethanol yield of biomass. It supports to develop biofuel for our energy and environmental goals and indicates that the net energy yield of unit land is very important parameter to evaluate the biofuel. We should develop a crop with high net energy yield of unit land to decrease land demand for energy production, and the crop can grow in agricultural marginal land with little or no fertilizer without competing with food production. | |||
TO cite this article:huang weidong,wu chundu,xia weidong, et al. The method to Evaluate Energy Value of Biofuel[OL].[22 May 2008] http://en.paper.edu.cn/en_releasepaper/content/21651 |
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