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Frontiers of Engineering Management 2023年第3期10卷 439-454页

作者： Zeyu WANG Huan LAN Minggong ZHANG Weirui XUE Xiaolong XUE School of Management Guangzhou UniversityGuangzhou 510006China Department of Operation and development Hong Kong-Zhuhai-Macao Bridge AuthorityZhuhai 519060China

Project management teams are critical in the implementation of megaprojects,but their evolution throughout the project lifecycle has not been clearly *** paper explores the organizational evolution of megaproject management teams through a longitudinal retrospective case study of the Hong Kong–Zhuhai–Macao Bridge(HZMB)*** organizational evolution is examined in terms of management objectives,management content,and organizational *** organizational evolution of the HZMB project management team exhibits stage differentiation with the coexistence of turbulence and *** in the external environment are the driving force for organizational evolution,whereas a flexible organizational strategy is critical in promoting this *** on the HZMB case study,this paper summarizes six critical measures that facilitate the organizational evolution of megaproject management *** findings add value to megaproject management theory and provide a better understanding of the dynamics and complexity of megaproject organizational management.

关键词： megaproject organizational evolution whole lifecycle management project management team

Contribution of moderate overall coal-bearing basin uplift to tight sand gas accumulation:case study of the Xujiahe Formation in the Sichuan Basin and the Upper Paleozoic in the Ordos Basin,China

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Petroleum Science 2015年第2期12卷 218-231页

作者： Cong-Sheng Bian Wen-Zhi Zhao Hong-Jun Wang Zhi-Yong Chen Ze-Cheng Wang Guang-Di Liu Chang-Yi Zhao Yun-Peng Wang Zhao-Hui Xu Yong-Xin Li Lin Jiang Research Institute of Petroleum Exploration & development CNPC College of Geosciences China University of Petroleum guangzhou Institute of Geochemistry Chinese Academy of Sciences

Tight sand gas is an important unconventional gas resource occurring widely in different petroleum basins. In coal-bearing formations of the Upper Triassic in the Sichuan Basin and the Carboniferous and Permian in the Ordos Basin, coal measure strata and tight sandstone constitute widely distributed source-reservoir assemblages and form the basic conditions for the formation of large tight sand gas fields. Similar to most tight gas basins in North America, the Sichuan, and Ordos Basins, all experienced overall moderate uplift and denudation in Meso- Cenozoic after earlier deep burial. Coal seam adsorption principles and actual coal sample simulation experiment results show that in the course of strata uplift, pressure drops and desorption occurs in coal measure strata, resulting in the discharge of substantial free gas. This ac- counts for 28 %-42 % of total gas expulsion from source rocks. At the same time, the free gases formerly stored in the pores of coal measure source rocks were also dis- charged at a large scale due to volumetric expansion re- sulting from strata uplift and pressure drop. Based on experimental data, the gas totally discharged in the uplift period of Upper Paleozoic in the Ordos Basin, and Upper Triassic Xujiahe Formation in the Sichuan Basin is calcu- lated as （3-6） × 10^5 m^3/km^2. Geological evidence for gasaccumulation in the uplift period is found in the gas reservoir analysis of the above two basins. Firstly, natural gas discharged in the uplift period has a lighter carbon isotope ratio and lower maturity than that formed in the burial period, belonging to that generated at the early stage of source rock maturity, and is absorbed and stored in coal measure strata. Secondly, physical simulation experiment results at high-temperature and high-salinity inclusions, and almost actual geologic conditions confirm that sub- stantial gas charging and accumulation occurred in the uplift period of the coal measure strata of the two basins. Diffusiv

关键词： Sichuan Basin Ordos Basin Tight sand gasStratigraphic uplift Coalaccumulation mechanismmeasure Hydrocarbon Diffusion

Effect of volcanism on maturation of sedimentary organic matter and its significance for hydrocarbon generation, a case:the East Sag of Liaohe Basin

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Chinese Science Bulletin 1995年第17期40卷 1446-1450页

作者：孙永革傅家谟刘德汉盛国英陈振岩吴铁生 guangzhou Institute of Geochemistry. Chinese Academy of Sciences. guangzhou 510610. China) Liaohe Institute of Petroleum Exploration & development. Panjin 124010 China)

It has been widely noticed that anomalous heating of volcanic eruption and magmaticintrusion have certain influence on the maturation of sedimentary organic matter. Thesecases are most favorable for studying the changes of organic molecule structures caused bythermal alteration. The results. in turns. are helpfull in investigating the evolutions of pe-troleum and coal. It is shown that the dominant effect of anomalous heating

关键词： volcanism organic matter maturation hydrocarbon.

Polypropylene pyrolysis and steam reforming over Fe-based catalyst supported on activated carbon for the production of hydrogen-rich syngas

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Carbon Resources Conversion 2023年第3期6卷 173-182页

作者： Shuxiao Wang Yibo Sun Rui Shan Jing Gu Taoli Huhe Xiang Ling Haoran Yuan Yong Chen Nanjing Tech University Nanjing 211816China guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Southern Marine Science and Engineering Guangdong Laboratory(guangzhou) Guangzhou 511458China CAS Key Laboratory of Renewable Energy Guangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and development Guangzhou 510640China

The purpose of this study is to explore a method for the high-yield production of hydrogen by pyrolysis and steam reforming of polymer *** developed Fe-based catalyst supported on activated carbon was applied to reactions with polypropylene for hydrogen *** effects of iron loading(%)in the catalyst,the total catalyst amount,and the water content in the reaction atmosphere on the performance of hydrogen and gas production were *** the optimal conditions,the hydrogen yield without water added reached 38.73 mmol/gPP,and this yield was significantly improved by adding water into the reaction *** optimizing the amount of water added,the hydrogen yield reached 112.71 mmol/*** surface morphology and structural components of the fresh and used catalysts were characterized,and the morphology and quantity of carbon deposition on the catalyst were *** catalytic stability of the 15Fe/AC catalyst was determined by repeating the test 10 times under the optimal reaction *** the reaction time increased,the selectivity of the catalyst for hydrogen decreased and that for hydrocarbons ***,the experimental method used in this study had excellent hydrogen production ***,this study provided a novel method for the high-efficiency production of hydrogen by pyrolysis and steam reforming of polymer plastics.

关键词： H_(2)production Catalytic reforming Pyrolysis Plastic Carbon nanotubes

INVESTIGATION ON NEW TYPE OF DOUBLY BLENDING ABRASIVE WATER JET NOZZLE SYSTEM WITH HIGHER PERFORMANCE

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Chinese Journal of Mechanical Engineering 2006年第3期19卷 417-420页

作者： ZHU Pailong ZHOU Jinjin TANG Dianbo Department of Mechanical and Electrical Engineering Guangdong Industry Technical College Guangzhou 510300 China School of Mechanical Engineering Dalian University of Technology Dalian 116023 China Research and development Center Guangzhou Hitachi Escalator Co. Ltd Guangzhou 510430 China

Based on the two existing abrasive water-jet（AWJ） systems, the dia-jet （or pre-jet） and the post-jet, a new type of abrasive water-jet system is put forward, which combines the dia-jet＇s advantage, low operating system pressure, slender stream jet, and more concentrative abrasive in the blended stream, with merits of post-jet, the less sophisticate apparatus, successive supply of abrasives. The theoretic analysis is brought out in detail, and the nozzle system structure is concisely illustrated. Its relevant experiment results are demonstrated, proving that this new system is effective in various aspects, enlarging penetrating capability without raising system pressure, saving machining power supply, lessening energy loss, etc.

关键词： Abrasive water-jet(AWJ) Cutting performance Doubly blending tube Dia-jet System Post-jet system Energy efficiency

Performance analysis and optimization of free cooling strategies for a liquid-cooled data center

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Building Simulation 2023年第8期16卷 1317-1330页

作者： Weinan Zhou Qin Sun Weimin Luo Wei Xiao Pengfei Cui Wei Wu Kaijun Dong guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhouChina University of Chinese Academy of Sciences BeijingChina Guangdong Provincial Key Laboratory of New and Renewable Energy Research and development GuangzhouChina Guangdong Fushengda Intelligent Technology Co. Ltd.Dongguan 523770China guangzhou Goaland Energy Conservation Tech.Co. Ltd.Guangzhou 510663China School of Energy and Environment City University of Hong KongHong KongChina

The increasing power density of IT electronics and the enormous energy consumption of data centers lead to the urgent demand for efficient cooling *** to its efficiency and safety,liquid-cooled heat sink technology may gradually replace air-cooled technology over *** the ambient or higher water supply temperature,the liquid-cooled technology shortens the operating time of the chiller and improves its coefficient of performance,while the pump power consumption may increase for satisfying the constant cooling ***,it is significant to study the optimal water supply temperature to achieve energy-efficient operation of data centers.A virtual 30.1 kW data center is considered as the case,the liquid-cooled system is constructed with a combination of innovative manifold microchannel heat sink with oblique fins and indirect evaporative cooling technology to minimize energy consumption.A hybrid thermal management model integrating the heat dissipation model and the power consumption model is established by TRNSYS and FLUENT *** the highest chip-safe operating temperature premise,the energy performance is analyzed under various water supply temperatures in *** result shows that only 21.5-hour mechanical cooling is needed with the 30℃server inlet temperature throughout the *** the minimized power consumption occurs with the constant 29℃server inlet ***,the temperature adaptive control strategy(TACS)is adopted to test the cooling system power consumption under different regulation frequencies,and the by-week TACS can achieve another 11.5%energy saving than the minimum power consumption of the constant temperature control strategy.

关键词： data center liquid cooling system manifold microchannel heat sink indirect evaporative cooling control strategy

Turbulent combustion modeling using a flamelet generated manifold approach——a validation study in Open FOAM

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Applied Mathematics and Mechanics(English Edition) 2019年第8期40卷 1197-1210页

作者： Tao LI Fanfu KONG4 Baopeng XU Xiaohan WANG guangzhou Institute of Energy Conversion Chinese Academy of Sciences Guangzhou 510640China Key Laboratory of Renewable Energy Chinese Academy of Sciences Guangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and development Guangzhou 510640China Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of TechnologyDalian 116024Liaoning ProvinceChina

An OpenFOAM based turbulence combustion solver with flamelet generated manifolds (FGMs) is presented in this paper. A series of flamelets, representative for turbulent flames, are calculated first by a one-dimensional (1D) detailed chemistry solver with the consideration of both transport and stretch/curvature contributions. The flame structure is then parameterized as a function of multiple reaction control variables. A manifold, which collects the 1D flame properties, is built from the 1D flame solutions. The control variables of the mixture fraction and the progress variable are solved from the corresponding transport equations. During the calculation, the scalar variables, e.g., temperature and species concentration, are retrieved from the manifolds by interpolation. A transport equation for NO is solved to improve its prediction accuracy. To verify the ability to deal with the enthalpy loss effect, the temperature retrieved directly from the manifolds is compared with the temperature solved from a transport equation of absolute enthalpy. The resulting FGM-computational fluid dynamics (CFD) coupled code has three significant features, i.e., accurate NO prediction, the ability to treat the heat loss effect and the adoption at the turbulence level, and high quality prediction within practical industrial configurations. The proposed method is validated against the Sandia flame D, and good agreement with the experimental data is obtained.

关键词： flamelet generated manifold turbulent combustion NO prediction

Immature crude oils in the salt lake depositional environment are related to organic matter precipitated at stage of carbonate in salt lake sedimentation sequences

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Chinese Science Bulletin 2000年第S1期45卷 1-6页

作者： PENG Ping’an SHENG Guoying FU Jiamo JIANG Jiagang National Laboratory of Organic Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Institute of Petroleum Research and development Jianghan Oil FieldHubei 433123China

The present paper studies the mineralogy and geochemistry of a geological section in Jianghan basin. Widely distributed immature oils in this basin have been shown to relate to the carbonate depositional stage of salt lake sedimentation cycle. It is concluded that only when the content of organic carbon in the rocks is taken into account, is it meaningful to calculate the immature oil in the source rocks.

关键词： depositional environment of salt lake immature crude oils biological markers compound specific carbon isotope composition.

Determining the Main Gas-generation Phase of Marine Organic Matters in Different Occurrence States using the Kinetic Method

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Acta Geologica Sinica(English Edition) 2008年第1期82卷 197-205页

作者： WANG Yunpeng ZHAO Changyi WANG Zhaoyun WANG Hongjun ZOU Yanrong LIU Jinzhong ZHAO Wenzhi LIU Dehan LU Jialan State Key Laboratory of Organic Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Research Institute of Petroleum Exploration and development PetroChina Beijing 100083 China

This paper probes the determination of the main gas-generation phase of marine organic mattes using the kinetic method. The main gas-generation phase of marine organic matters was determined by coupling the gas generation yields and rates in geological history computed by the acquired kinetic parameters of typical marine organic matters （reservoir oil, residual bitumen, lowmaturity kerogen and residual kerogen） in both China and abroad and maturity by the EasyRo（%） method. Here, the main gas-generation phase was determined as Ro%=1.4%-2.4% for type Ⅰ kerogen, Ro%=1.5-3.0% for low-maturity type Ⅱ kerogen, Ro%=1.4-2.8% for residual kerogen, Ro%=1.5-3.2% for residual bitumen and Ro%=1.6-3.2% for reservoir oil cracking. The influences on the main gas-generation phase from the openness of the simulated system and the ＂dead line＂ of natural gas generation are also discussed. The results indicate that the openness of simulation system has a definite influence on computing the main gas-generation phase. The main gas-generation phase of type Ⅱ kerogen is Ro%=1.4-3.1% in an open system, which is earlier than that in a closed system. According to our results, the ＂dead line＂ of natural gas generation is determined as Ro=3.5 % for type Ⅰ kerogen, Ro=4.4-4.5% for type Ⅱ kerogen and Ro=4.6% for marine oil. Preliminary applications are presented taking the southwestern Tarim Basin as an example.

关键词： marine organic matter kerogen oil cracking hydrocarbon generating kinetics main gasgeneration phase southwestern Tarim Basin gas source kitchen

Optimization of the methane production in batch anaerobic digestion of maize straw by adjustment of total solid and substrate-to-inoculum ratio based on kinetics

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 225-231页

作者： Feng Zhen Tao Xing Lianhua Li Yongming Sun Hongqiong Zhang guangzhou Institute of Energy Conversion Chinese Academy of SciencesGuangzhou 510640China Guangdong Provincial Key Laboratory of New and Renewable Energy Research and development Guangzhou 510640China College of Engineering Northeast Agricultural UniversityHarbin 150030China

Anaerobic digestion(AD)operating under conditions of organic overload stress typically exacerbates the potential for process instability,thereby resulting in significant economic and ecological *** this investigation,an augmented substrate-to-inoculum ratio(S/I)along with varying total solid content(TS)levels was employed to replicate diverse organic loadings,utilizing maize straw and cattle *** findings reveal that a moderate augmentation in S/I and TS proves advantageous in augmenting methane yield,while an excessive substrate loading diminishes methane yield,hampers the kinetics of methane production,and even induces severe process *** study also displayed the variation of the model parameters for the first-order model,the modified Gompertze model,and the transfer function *** the modified Gompertze model and transfer function model exhibited the same environmental stress ***,both the increase in particulate content and the increase in S/I had a substantial effect on the substrate conversion rate to *** analysis demonstrates the dominant influence of Firmicutes and Methanosarcina under different organic loading *** both a kinetic and a microbiological point of view,this work provides novel insights into the fundamental processes that regulate anaerobic digestion(AD)under varying loading ***,it has significant implications for improving the operating efficiency of AD,which is a significant benefit.

关键词： maize straw dry anaerobic digestion methane production microbial characteristics kinetic model