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Single-Reheating or Double-Reheating, Which is Better for S-CO_2 Coal Fired Power Generation System?

Journal of Thermal Science 2019年第3期28卷 431-441页

作者： SUN Enhui XU Jinliang HU Han YAN Chenshuai LIU Chao Beijing Key Laboratory of Multiphase Flow and Heat Transfer for Low Grade Energy Utilization North China Electric Power University Key Laboratory of Condition Monitoring and Control for Power plant Equipment of Ministry of Education North China Electric Power University

The objective of this paper is to provide the optimal choice of single-reheating or double-reheating when considering residual flue gas heat in S-CO_2 coal fired power system. The cascade utilization of flue gas energy includes three temperature levels, with high and low temperature ranges of flue gas heat extracted by S-CO_2 cycle and air preheater, respectively. Two methods are proposed to absorb residual flue gas heat Qre in middle temperature range. Both methods shall decrease CO_2 temperature entering the boiler T4 and increase secondary air temperature Tsec air, whose maximum value is deduced based on energy conservation in air preheater. The system is analyzed incorporating thermodynamics, boiler pressure drop and energy distribution. It is shown that at a given main vapor temperature T5, the main vapor pressure P5 can be adjusted to a value so that Qre is completely eliminated, which is called the main vapor pressure adjustment method. For this method, single-reheating is only available for higher main vapor temperatures. The power generation efficiency for single-reheating is obviously higher than double-reheating. If residual flue gas heat does exist, a flue gas heater FGC is integrated with S-CO_2 cycle, which is called the FGC method. Both single-reheating and double-reheating share similar power generation efficiency, but single-reheating creates less residual flue gas heat. We conclude that single-reheating is preferable, and the pressure adjustment method achieves obviously higher power generation efficiency than the FGC method.

关键词： S-CO2 coal fired power system thermodynamics heat transfer reheating residual flue gas heat

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Integration of Metabolomics and Transcriptomics for Phytochemical Genomics in Arabidopsis and Non-model plants

Integration of Metabolomics and Transcriptomics for Phytoche...

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the 1st international conference on plant secondary metabolism

作者： Kazuki Saito Chiba University Graduate School of Pharmaceutical Sciences Inage-ku Chiba 263-8522 Japan RIKEN Plant Science Center Tsurumi-ku Yokohama 230-0045 Japan

＜正＞The completion of the whole genome sequence ofArabidopsis thaliana has made it possible to discover the genes involved in metabolism in a high throughput manner by determining gene-to-metabolite correlation through the comprehensive analysis of metabolite accumulation and gene expression[1].In silico co-expression analysis of genes involved in flavonoid metabolism in Arabidopsis was performed using a publicly available transcriptome database of DNA microarrays.We inferred a co-expression framework model of the genes involved in the path-

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Biosynthetic prenylation of flavonoids in plants

Biosynthetic prenylation of flavonoids in plants

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the 1st international conference on plant secondary metabolism

作者： Ying Zeng~* Pei-Ji Zhao Juan Gao state Key Laboratory of Phytochemistry and plant Resources in West China Kunming Institute of Botany Chinese Academy of Sciences 132 Lanhei Rd Kunming P.R.China

＜正＞The recent characterization of genes encoding a novel family of aromatic prenyltransferases is challenging discoveries in the biochemistry of natural compounds.This review attempts to summarize current understanding of aromatic prenyltransferases in plants[1,2] and microbes[3],to focus on the biosynthetic prenylation of fla-

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Novel Approaches for Inhibitor Screening and Target Identification using Arabidopsis Full-Length cDNA Overexpression （FOX） Lines

Novel Approaches for Inhibitor Screening and Target Identifi...

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the 1st international conference on plant secondary metabolism

作者： Hiroyuki Kasahara Takanari Ichikawa Minami Matsui Yuji Kamiya RIKEN Plant Science CenterYokohama Japan RIKEN Plant Science Center Yokohama Japan

＜正＞Organisms have two possible routes for the biosynthesis of isoprenoids;the mevalonate （MVA） and methylerythritol phosphate （MEP） pathways.The MEP pathway has been recently recognized as important target of drug and agrochemical developments and chemical genetics studies,e.***.fosmidomycin shows antima- larial activity by inhibition of 1-deoxyxylulose-5-phosphate reductoisomerase （DXR）,and clomazone has been used for herbicide,which metabolite ketoclomazone inhibits 1-deoxyxylulose-5-phosphate synthase.plants have

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Anti-tumor effects and mechanism of polysaccharides from sweet potato

Anti-tumor effects and mechanism of polysaccharides from swe...

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the 1st international conference on plant secondary metabolism

作者： Chun-yu Tian~(1 *) Guan-lin Wang~2 ~1Department of Bioscience and Biotechnology School of Environmental and Biological Science and Technology Dalian University of Technology Dalian 116024 China ~2College of Life Science Liaoning Normal University Dalian 116029 China

＜正＞In this paper,a study on anti-tumor effects and mechanism of Polysaccharides from sweet potato （PSP） has been made.Experiments in vivo and in vitro show that PSP inhibit tumor cells fissiparity directly.The K562 Mammary Carcinoma cells and Hca-f solid tumor cells with the treatment of PSP have been greatly inhibited. The inhibition rate reach to 75% （P＜0.01） while PSP does little harm to the natural cells （FC,flbroblast cell）.In the mean time,immune defence system in vivo is activated.Compared with the control,lymphocyte transformation

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