Possible Energy Network with polygeneration system and CCS for China

On basis of adopting polygeneration systems for power and alternative fuels,capturing CO2 with near zero energy penalties,and storing CO2 on sites,a new kind of Energy Network can integrate energy utilization,CO2 capture,transportation and storage synthetically.Techno-economic analysis of this solution focusing on Inner Mongolia and the Yangtze River Delta districts had been carried with comparison to the chain method for energy utilization and CO2 sequestration.This solution can save 21.5% of energy,and re...     

Fuel combustion test in constant volume combustion chamber with built-in adaptor

Combustion tests of pre-mixture of methane and air in constant volume combustion chamber(CVCC) have been carried out by means of flame propagation photo and gas pressure measurement,the effects of CVCC body temperature,intake pressure of pre-mixture of methane and air,equivalence ratio and location of the built-in adaptor have been investigated.The whole combustion chamber can be divided into two parts,i.e.the upper combustion chamber and the lower combustion chamber,by the built-in adaptor with through hol...     

基于HHT的钢筋混凝土结构损伤检测新方法分析

针对混凝土结构损伤信号的特点,引入一种非平稳信号的时频分析新方法--希尔伯特-黄变换(Hilbert-Huang变换,简称HHT)用于混凝土结构损伤检测.该方法是通过经验模态分解(empirical mode decomposition, EMD)提取信号的固有模态函数(intrinsic mode function, IMF),再进行Hilbert变换,求瞬时频率、瞬时振幅,得到信号的Hilbert谱.试验中通过对无损伤和有损伤两种钢筋混凝土梁进行侧向激振检测,对无损伤信号和损伤信号谱特征进行比较分析,结果表明HHT方法能识别结构损伤,且优于常规的Fourier变换方法及小波变换(wavelet transform, WT)方法,值得推广.     

Experimental investigation on a parabolic trough solar collector for thermal power generation

Developing solar thermal power technology in an effective manner is a great challenge in China.In this paper an experiment platform of a parabolic trough solar collector system(PTCS) was developed for thermal power generation,and the performance of the PTCS was experimentally investigated with synthetic oil as the circulate heat transfer fluid(HTF).The solar collector's efficiency with the variation of the solar flux and the flow rate of the HTF was identified.The collector efficiency of the PTCS can be in ...     

ABS／PVC树脂共混改性国内研究进展

介绍了ABS／PVC合金在国内的研究状况,主要综述了ABS／PVC合金的共混组成、共混影响因素,国内应用现状;ABS／PVC合金的国内生产现状和科研状况。     

A comprehensive techno‐economic analysis method for power generation systems with CO2 capture

A new comprehensive techno‐economic analysis method for power generation systems with CO₂ capture is proposed in this paper. The correlative relationship between the efficiency penalty, investment increment, and CO₂ avoidance cost is established. Through theoretical derivation, typical system analysis, and variation trends investigation, the mutual influence between technical and economic factors and their impacts on the CO₂ avoidance cost are studied. At the same time, the important role that system integration plays in CO₂ avoidance is investigated based on the analysis of a novel partial gasification CO₂ recovery system. The results reveal that for the power generation systems with CO₂ capture, the efficiency penalty not only affects the costs on fuel, but the incremental investment cost for CO₂ capture (U.S.$ kW⁻¹) as well. Consequently, it will have a decisive impact on the CO₂ avoidance cost. Therefore, the added attention should be paid to improve the technical performance in order to reduce the efficiency penalty in energy system with CO₂ capture and storage. Additionally, the system integration may not only decrease the efficiency penalty, but also simplify the system structure and keep the investment increment at a low level, and thereby it reduces the CO₂ avoidance cost significantly. For example, for the novel partial gasification CO₂ recovery system, owing to system integration, its efficiency can reach 42.2%, with 70% of CO₂ capture, and its investment cost is only 87$ kW⁻¹ higher than that of the reference IGCC system, thereby the CO₂ avoidance cost is only 6.23$ t⁻¹ CO₂. The obtained results provide a comprehensive technical–economical analysis method for energy systems with CO₂ capture useful for reducing the avoidance costs. Copyright © 2009 John Wiley & Sons, Ltd.     

一类双氯芬酸类似物环氧合酶抑制剂作用模式的理论研究

基于1PXX晶体结构以及以晶体中双氯芬酸DIF701为模版的双氯芬酸类似物2型环氧合酶(COX-2)抑制剂的结构,利用药效团和自组织分子力场分析方法,探讨了COX-2与抑制剂的相互作用模式.建立了双氯芬酸药效团模型和COx一2抑制剂三维定量构效关系模型,并且两种方法所得的模型吻合;确定的COX-2与抑制剂的作用模式,可以指导抑制剂的设计,用于开发抗炎药物.