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Ground Penetrating Radar Survey for the Location and Assessment of the Hydrocarbon Plumes at Gas Station Installations
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作者 Jose Vicente Fuente Rubén Diego Roberto Fabregad 《Journal of Geoscience and Environment Protection》 2021年第12期57-71,共15页
The present paper describes the implementation of GPR 3D survey for detecting and delineating possible remain<span style="font-family:"">s</span><span style="font-family:""... The present paper describes the implementation of GPR 3D survey for detecting and delineating possible remain<span style="font-family:"">s</span><span style="font-family:""> of hydrocarbon plumes on a gas station. The 3D-imaging was used for the detection of anomalous zones that were analyzed with some relevant signal attributes extracted by digital signal processing. These signal attributes or parameters ha</span><span style="font-family:"">ve</span><span style="font-family:""> been the frequency of the maximum energy concentration on time-frequency distribution and instantaneous amplitude that could be related </span><span style="font-family:"">to</span><span style="font-family:""> the local response of the electromagnetic interaction and the presence of hydrocarbon plumes or soil contaminated area</span><span style="font-family:"">s</span><span style="font-family:"">. The implementation methodology took place at a gas station monitored with a piezometric sensor installation with soil layer information. The 3D-imaging of processed data and its slicing tool permits visualizing expected targets as pipes, tanks and installations in the subsoil exposing the anomalous zones for refined analyses. This further processing has used some spectral attributes of the signal to assess the real presence of the total petroleum hydrocarbons (TPH) providing a new effort to simplify and overcome the current state of the geophysical methods able to assess the presence of hydrocarbon plumes </span><span style="font-family:"">in</span><span style="font-family:""> industrial environments regarding the time cost of the survey and the traceable indication of the spectral shi</span><span style="font-family:"">ft</span><span style="font-family:"">ment shown in the plume volume.</span> 展开更多
关键词 GPR Survey Time-Frequency Analysis Instantaneous Amplitude Slice Tomography 3D-Reconstruction gas station
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Scrambling for China's Gas Stations
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《China's Foreign Trade》 2000年第6期4-8,共5页
关键词 OO Scrambling for China’s gas stations
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PetroChina to Invest US$725 Million in Gas Stations
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《China Oil & Gas》 CAS 2001年第1期44-,共1页
关键词 PetroChina to Invest US$725 Million in gas stations US
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Relevance of Marketing Strategies for Gas Stations in China - An Analysis Using SPSS
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作者 Zhe Zhang 《Proceedings of Business and Economic Studies》 2021年第6期53-60,共8页
This study aims to find out the relevance of marketing strategies for gas stations in China.According to IBISWorld,the companies holding the largest market shares in China’s gas station industry include China Petroch... This study aims to find out the relevance of marketing strategies for gas stations in China.According to IBISWorld,the companies holding the largest market shares in China’s gas station industry include China Petrochemical Corporation,China National Petroleum Corporation,Sinochem Corporation,China National Offshore Oil Corporation,and BP(China)Holdings Limited.Marketing has changed over the past several years.Similarly,gas station marketing is all about more customers,greater sales,and higher profits.Technology provides many different marketing tools to see more fresh faces at the door,increase repeat sales,and improve profits.Word-of-mouth advertising should be encouraged,especially when contests are being held.The prizes from these contests may include car essentials,free coffee,free car wash,or coupons to be used at convenience stores.Customers who have won these contests would surely go around advertising the particular gas station,ultimately bringing in more customers.Other than that,managers can boost the sales volume through radio promotions as well.This study also aims to give future businessmen and women some ideas on how to deal with different kinds of strategies when it comes to marketing,especially in China in hope to cater and prove to the people of China the possibility of promoting businesses,such as the oil industry. 展开更多
关键词 Marketing strategies Oil corporation gas stations Oil industry ADVERTISING
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Development of a ~3He Gas Filling Station at the China Spallation Neutron Source
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作者 Zecong Qin Chuyi Huang +8 位作者 ZNBuck WKreuzpaintner SMAmir ASalman Fan Ye Junpei Zhang Chenyang Jiang Tianhao Wang Xin Tong 《Chinese Physics Letters》 SCIE CAS CSCD 2021年第5期16-20,共5页
At the China Spallation Neutron Source(CSNS), we have developed a custom gas-filling station, a glassblowing workshop, and a spin-exchange optical pumping(SEOP) system for producing high-quality ^(3)He-based neutron s... At the China Spallation Neutron Source(CSNS), we have developed a custom gas-filling station, a glassblowing workshop, and a spin-exchange optical pumping(SEOP) system for producing high-quality ^(3)He-based neutron spin filter(NSF) cells. The gas-filling station is capable of routinely filling ^(3)He cells made from GE180 glass of various dimensions, to be used as neutron polarizers and analyzers on beamlines at the CSNS. Performance tests on cells fabricated at our gas-filling station are conducted via neutron transmission and nuclear-magneticresonance measurements, revealing nominal filling pressures, and a saturated ~3He polarization in the region of 80%, with a lifetime of approximately 240 hours. These results demonstrate our ability to produce competitive NSF cells to meet the ever-increasing research needs of the polarized neutron research community. 展开更多
关键词 NSF Development of a gas Filling station at the China Spallation Neutron Source
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Design of the Pumping Stations and the Gas Puffing Systems for the Superconducting Tokamak HT-7U
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作者 辜学茂 王小明 +5 位作者 秦品建 杨道文 胡建生 罗南昌 李生发 李高云 《Plasma Science and Technology》 SCIE EI CAS CSCD 2000年第6期557-563,共7页
The design of the pumping stations and the gas injection systems for the inner Chamber and the cryostat on HT-7U superconducting tokamak is described in this paper.
关键词 Design of the Pumping stations and the gas Puffing Systems for the Superconducting Tokamak HT-7U HT
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Techno-economic Analysis of Distributed Hydrogen Production from Natural Gas 被引量:2
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作者 LUK Ho Ting LEI Ho Man +1 位作者 NG Wai Yee LAM Koon Fung 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2012年第3期489-496,共8页
It is well established that hydrogen has the potential to make a significant contribution to the world energy production.In U.S.,majority of hydrogen production plants implement steam methane reforming(SMR) for centra... It is well established that hydrogen has the potential to make a significant contribution to the world energy production.In U.S.,majority of hydrogen production plants implement steam methane reforming(SMR) for centralized hydrogen production.However,there is a wide lack of agreement on the nascent stage of using hydrogen as fuel in vehicles industry because of the difficulty in delivery and storage.By performing technological and economic analysis,this work aims to establish the most feasible hydrogen production pathway for automotives in near future.From the evaluation,processes such as thermal cracking of ammonia and centralized hydrogen production followed by bulk delivery are eliminated while on-site steam reforming of methanol and natural gas are the most technologically feasible options.These two processes are further evaluated by comprehensive economic analysis.The results showed that the steam reforming(SR) of natural gas has a shorter payback time and a higher return on investment(ROI) and internal rate of return(IRR).Sensitivity analysis has also been constructed to evaluate the impact of variables like NG feedstock price,capital of investment and operating capacity factor on the overall production cost of hydrogen.Based on this study,natural gas is prompted to be the most economically and technologically available raw material for short-term hydrogen production before the transition to renewable energy source such as solar energy,biomass and wind power. 展开更多
关键词 gas station cost analysis steam reforming ammonia cracking
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A Novel Technology for Generation of Electricity and Cold by Using Energy Potential of Transmission Line's High Pressure Gas 被引量:1
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作者 Zohrab Melikyan 《Journal of Energy and Power Engineering》 2015年第10期852-859,共8页
The main objective of this paper is to develop a novel technology for combined generation of electricity and cold by using energy potential of transmission line's high pressure gas. For this purpose, the reduction of... The main objective of this paper is to develop a novel technology for combined generation of electricity and cold by using energy potential of transmission line's high pressure gas. For this purpose, the reduction of high pressure of the gas in gas distribution station instead of useless expansion throttling process is suggested to realize by adiabatic expansion, which is executed in a gas expanding turbine. Herewith, the gas distribution station is turned into energy and cold generating plant. Simultaneous operation of energy and cold generating plant is described. A method and appropriate formulas for determination of design characteristics of considered plant are suggested. A new method for reveres order of calculation and design of the cold store based on the use of expanded cold gas as cooling agent is developed. Calculations and analysis prove high energy efficiency of suggested technology, the wide use of which will provide significant production of cheap electricity and cold and as well as reduction of fossil fuel consumption. 展开更多
关键词 Natural gas gas distribution station throttling valve turbo-expander isenthalpic adiabatic.
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Simulation of natural gas transmission pipeline network system performance
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作者 Abraham Debebe Woldeyohannes Mohd Amin Abd Majid 《Journal of Energy and Power Engineering》 2009年第12期29-38,共10页
Simulation has proven to be an effective tool for analyzing pipeline network systems (PNS) in order to determine the design and operational variables which are essential for evaluating the performance of the system.... Simulation has proven to be an effective tool for analyzing pipeline network systems (PNS) in order to determine the design and operational variables which are essential for evaluating the performance of the system. This paper discusses the use of simulation for performance analysis of transmission PNS. A simulation model was developed for determining flow and pressure variables for different configuration of PNS. The mathematical formulation for the simulation model was derived based on the principles of energy conservation, mass balance, and compressor characteristics. For the determination of the pressure and flow variables, solution procedure was developed based on iterative Newton Raphson scheme and implemented using visual C++6. Evaluations of the simulation model with the existing pipeline network system showed that the model enabled to determine the operational variables with less than ten iterations. The performances of the compressor working in the pipeline network system xvhich includes energy consumption, compression ratio and discharge pressure were evaluated to meet pressure requirements ranging from 4000-5000 kPa at various speed. Results of the analyses from the simulation indicated that the model could be used for performance analysis to assist decisions regarding the design and optimal operations of transmission PNS. 展开更多
关键词 ENERGY transmission pipeline network: compressor station natural gas simulation
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