ENERGY EFFICIENCY OF OPERATING MODES OF MAIN OIL PIPELINES WITH PERIODICAL PARTIAL OIL DUMPING

2018 ◽  
pp. 151-160
Author(s):  
Y. V. Yakymiv ◽  
O. M. Bortnyak
Keyword(s):  
Energy Efficiency ◽  
Transportation Systems ◽  
Operating Conditions ◽  
Oil Pipeline ◽  
Operating Modes ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Oil Flow ◽  
The Impact

Modern oil transportation systems are characterized by a complex hydraulic structure and geometric configuration, and often require the need for a permanent or periodic pumping or dumping part of the oil flow. The implementation of such transportation technology necessarily leads to changes in the operating conditions of oil pipelines and in accordance with the need to regulate the operation of oil pumping stations. Consequently, determining the patterns of the impact of the process of dumping the part of the oil on the energy parameters of the operation of oil transportation systems is an extremely important task.The influence of periodic dumping the part of oil on the energy efficiency of the operation of main oil pipelines was studied. The impact of volume of discharges on the consumption of power on pumping oil in the system of the main oil pipeline was analyzed. It has been found that with the increase the volume of discharges, the specific consumption of electricity for oil pumping decreases.Based on the carried research, the recommendations on the selection of reliable, safe and optimal pumping modes in terms of cost of electricity for the operation of oil pipelines "Druzhba" in the direction of Mozyr - Brody - Tukholsky pass with periodical partial oil dumping on LPDS "Brody".

scholarly journals FLOW CAPACITY OF MAIN OIL PIPELINES WITH PREDEFINED OIL PUMPING STATIONS LOCATION WITH PERIODICAL PARTIAL OIL DUMPING

2019 ◽  
pp. 65-71
Author(s):  
Y. V. Yakymiv ◽  
O. M. Bortniak
Keyword(s):  
Operating Mode ◽  
Transportation Systems ◽  
Operational Parameters ◽  
Oil Refineries ◽  
Discharge Point ◽  
Operating Modes ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
The Impact

Transportation of oil via main pipelines often requires the need for a permanent or periodic dumping of some part of the flow for further shipment of crude oil to oil refineries or filling stations. The application of such technology leads to a change in the operating mode of oil pumping stations and the oil transportation system in general. In case of emergency, an analogue of dumping is an oil leak from the pipeline in a case of violation of its integrity. Resetting a part of the flow is accompanied by a change in a liquid flow ahead of and behind the discharge point, which inevitably leads to a redistribution of pressures at the inlet and outlet of transitional petroleum pumping stations. Increasing of pressure at the output of the stations may lead to the violation of the pipeline strength; reducing of input shoring may cause cavitation operating modes of the equipment. Therefore, the study of the impact of discharges on the parameters of the operation of oil transportation systems in order to ensure their reliable, safe and economically efficient functioning is a relevant point of this area. For this purpose, based on the proposed calculated algorithms implemented in the software, the authors conducted the research on the impact of periodic oil discharges on the redistribution of hydraulic flows, energy losses at the bends, pressure at the inlet and outlet of oil pumping stations, as well as the volume of trunk oil pipelines capacity. The approbation of the proposed elaboration is carried out by defining the operational parameters of processing in functioning of oil and transport system «Druzhba» at the Mozyr-Tukholsky pass, which runs throughout the territory of Ukraine. Based on the analysis of the obtained results it was established that, depending on the volume of a discharge, the location of the limiting area, which limits the entry capacity of the trunk pipeline in general, might be changed. At the same time, the bend, ahead of which the part of oil is discharged, is not always limiting. Increasing the volume of a discharge leads to growing capacity of the pipeline at the area ahead of the point of discharge in the case when the limiting pipeline bend is behind the discharge point. If such a bend is located on the pipeline ahead of the discharge point, the increasing discharge does not affect the capacity of the initial area of the pipeline.

Peculiarities of the operation of the oil pipeline in the process of its cleaning from paraffin deposition

2021 ◽  
Vol 2 (106) ◽  
pp. 77-85
Author(s):  
M.D. Serediuk
Keyword(s):  
Specific Energy Consumption ◽  
Viscoplastic Fluid ◽  
Hydrodynamic Process ◽  
Oil Pipeline ◽  
Available Energy ◽  
Oil Transportation ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Cleaning Device ◽  
Additional Resistance

Purpose: Improving the technology of cleaning the inner surface of the main oil pipelines from paraffin deposition by specifying the hydrodynamic parameters of the movement of the cleaning device in the cavity of the pipeline, by more accurate prediction of the time of its approach to the final point of purification. Design/methodology/approach: Performing theoretical researches and application of mathematical modelling methods in order to establish the regularities of the cleaning device movement in the oil pipeline. Findings: Regularities of changes in the capacity of the pipeline, the speed of the cleaning process, the specific energy consumption for oil transportation as a function of the linear coordinates of the place and time of the cleaning device movement in the pipeline were established. Research limitations/implications: The next stage of research is to establish the influence of the characteristics of the viscoplastic fluid of the paraffin plug on the additional resistance and the mode of the cleaning device movement in the pipeline. Practical implications: It was developed the method that allows predicting the capacity and energy efficiency of the pipeline operation for each point in time of the process of cleaning from paraffin deposition. Originality/value: The originality of the method is the taking into account the additional hydraulic resistance of the paraffin plug and the available energy resources of oil pumping stations on the hydrodynamic process of moving the cleaning device in the oil pipeline.

Additional methods to improve the energy efficiency of oil pipeline transportation

2020 ◽  
Vol 10 (5) ◽  
pp. 558-565
Author(s):  
Marat R. Lukmanov ◽  
◽  
Sergey L. Semin ◽  
Pavel V. Fedorov ◽  
◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Pipeline System ◽  
Energy Costs ◽  
Improvement Program ◽  
Oil Pipeline ◽  
Energy Efficiency Improvement ◽  
Oil Transportation ◽  
Pumping Equipment ◽  
Preparatory Work

The challenges of increasing the energy efficiency of the economy as a whole and of certain production sectors in particular are a priority both in our country and abroad. As part of the energy policy of the Russian Federation to reduce the specific energy intensity of enterprises in the oil transportation system, Transneft PJSC developed and implements the energy saving and energy efficiency improvement Program. The application of energy-saving technologies allowed the company to significantly reduce operating costs and emissions of harmful substances. At the same time, further reduction of energy costs is complicated for objective reasons. The objective of this article is to present additional methods to improve the energy efficiency of oil transportation by the example of the organizational structure of Transneft. Possibilities to reduce energy costs in the organization of the operating services, planning and execution of work to eliminate defects and preparatory work for the scheduled shutdown of the pipeline, the use of pumping equipment, including pumps with variable speed drive, the use of various pipelines layouts, changing the volume of oil entering the pipeline system and increase its viscosity.

From the history of the problem of oil transportation and storage. Contribution of Shukhov V.G.

2021 ◽  
pp. 50-54
Author(s):  
L. R. Yurenkova ◽  
N. V. Bilash
Keyword(s):  
Oil Industry ◽  
Petroleum Products ◽  
Fuel Oil ◽  
Oil Pipeline ◽  
Oil Storage ◽  
Oil Transportation ◽  
Oil Pipelines ◽  
Steel Tanks ◽  
Cylindrical Steel Tanks ◽  
And Storage

A significant part of the oil consumed in the world is transported from production and processing sites to consumers via tankers and pipelines. According to experts' forecasts, the demand for oil and petroleum products in the coming years will be significantly higher than in 2020. In Russia, the oil transportation market is developing in several directions. The main directions are investing in pipeline transport and improving the design of tanks for storing oil and petroleum products. The article considers the contribution of the great Russian engineer V.G. Shukhov to the solution of the problem of oil transportation and storage and in general to the development of the oil industry. In the article "Oil Pipelines" (1884) and in the book "Pipelines and their application in the oil industry" (1894), V.G. Shukhov gave precise mathematical formulae for describing the processes of oil and fuel oil flowing through pipelines, creating a classical theory of oil pipelines. He is the author of the projects of the first Russian main pipelines: Baku-Batumi with a length of 883 km (1907) and Grozny-Tuapse with a length of 618 km (1928). Shukhov V.G. designed and then supervised the construction of oil pipelines of the companies "Branobel", "G.M. Lianozova and sons" and the world's first heated fuel oil pipeline. Working in the oil fields in Baku, Shukhov V.G. developed the basics of lifting and pumping oil products, proposed a method of lifting oil using compressed air — airlift, developed a calculation method and technology for the construction of cylindrical steel tanks for oil storage facilities.

From Chip to Cooling Tower Data Center Modeling: Chip Leakage Power and its Impact on Cooling Infrastructure Energy Efficiency

2011 ◽  
Author(s):  
Thomas J. Breen ◽  
Ed J. Walsh ◽  
Jeff Punch ◽  
Amip J. Shah ◽  
Cullen E. Bash ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Consumption ◽  
Data Center ◽  
Heat Dissipation ◽  
Linear Models ◽  
Operating Temperature ◽  
Leakage Power ◽  
Operating Conditions ◽  
Operating Temperatures ◽  
The Impact

The power consumption of the chip package is known to vary with operating temperature, independently of the workload processing power. This variation is commonly known as chip leakage power, typically accounting for ∼10% of total chip power consumption. The influence of operating temperature on leakage power consumption is a major concern for the IT industry for design optimization where IT system power densities are steadily increasing and leakage power expected to account for up to ∼50% of chip power in the near future associated with the reducing package size. Much attention has been placed on developing models of the chip leakage power as a function of package temperature, ranging from simple linear models to complex super-linear models. This knowledge is crucial for IT system designers to improve chip level energy efficiency and minimize heat dissipation. However, this work has been focused on the component level with little thought given to the impact of chip leakage power on entire data center efficiency. Studies on data center power consumption quote IT system heat dissipation as a constant value without accounting for the variance of chip power with operating temperature due to leakage power. Previous modeling techniques have also omitted this temperature dependent relationship. In this paper we discuss the need for chip leakage power to be included in the analysis of holistic data center performance. A chip leakage power model is defined and its implementation into an existing multi-scale data center energy model is discussed. Parametric studies are conducted over a range of system and environment operating conditions to evaluate the impact of varying degrees of chip leakage power. Possible strategies for mitigating the impact of leakage power are also illustrated in this study. This work illustrates that when including chip leakage power in the data center model, a compromise exists between increasing operating temperatures to improve cooling infrastructure efficiency and the increase in heat load at higher operating temperatures due to leakage power.

On the Influence of Lubricant Supply Conditions and Bearing Configuration to the Performance of (Semi) Floating Ring Bearing Systems for Turbochargers

2017 ◽  
Vol 140 (3) ◽  
Author(s):  
Luis San Andrés ◽  
Feng Yu ◽  
Kostandin Gjika
Keyword(s):  
Thermal Energy ◽  
Operating Conditions ◽  
Temperature Fields ◽  
Engine Oil ◽  
Large Temperature ◽  
Oil Viscosity ◽  
Supply Pressure ◽  
Oil Flow ◽  
The Impact ◽  
Bearing System

Engine oil-lubricated (semi) floating ring bearing ((S)FRB) systems in passenger vehicle turbochargers (TC) operate at temperatures well above ambient and must withstand large temperature gradients that can lead to severe thermomechanical induced stresses. Physical modeling of the thermal energy flow paths and an effective thermal management strategy are paramount to determine safe operating conditions ensuring the TC component mechanical integrity and the robustness of its bearing system. The paper details a model to predict the pressure and temperature fields and the distribution of thermal energy flows in a bearing system. The impact of lubricant supply conditions, bearing film clearances, and oil supply grooves is quantified. Either a low oil temperature or a high supply pressure increases the generated shear power. Either a high supply pressure or a large clearance allows more flow through the inner film and draws more heat from the hot journal, thought it increases the shear drag power as the oil viscosity remains high. Nonetheless, the peak temperature of the inner film is not influenced by the changes on the way the oil is supplied into the film as the thermal energy displaced from the hot shaft into the film is overwhelming. Adding axial grooves on the inner side of the (S)FRB improves its dynamic stability, albeit increasing the drawn oil flow as well as the drag power and heat from the shaft. The results identify a compromise between different parameters of groove designs thus enabling a bearing system with a low power consumption.

scholarly journals Determination of Efficiency of Operation of the Existing Pumping Equipment of Oil-Pumping Stations

2020 ◽  
Vol 129 (4) ◽  
pp. 46-50
Author(s):  
V. V. Shalai ◽  
◽  
M. O. Myznikov ◽  
M. I. Kononova ◽  
◽  
...  
Keyword(s):  
Rational Use ◽  
Operating Modes ◽  
Pumping Stations ◽  
Oil Pipelines ◽  
Pumping Equipment ◽  
Pumping Units

Improving the efficiency of operation of main pumping units is one of the pressing issues of modern practice of operating oil pipelines. The change in pumping capacity leads to a change in the operating modes of pumping equipment. This article proposes a methodology for assessing and improving the efficiency of the operation of oil pipelines based on the rational use of existing pumping equipment of pumping stations.

Methodology for criteria-based assessment of energy efficiency of main pipeline pumps

2021 ◽  
pp. 304-309
Author(s):  
Егор Андреевич Рябцев
Keyword(s):  
Energy Efficiency ◽  
Operating Conditions ◽  
Acceptance Test ◽  
Test Results ◽  
Unit Process ◽  
Oil Pipeline ◽  
Operating Range ◽  
System Pressure ◽  
Pumping Unit ◽  
Working Point

В настоящее время об энергоэффективности насосного агрегата судят на основании результатов приемо-сдаточных испытаний - по значению КПД в номинальной рабочей точке. Опыт эксплуатации насосов на объектах нефтепроводного транспорта показывает, что реальная рабочая точка насоса отличается от номинальной. Данное расхождение объясняется вариативностью режимов работы насосных установок. В этой связи предлагается оценивать энергоэффективность насоса по результатам испытаний исходя из реальных условий функционирования насосного оборудования - в рабочем диапазоне, необходимом для перекачки нефти (нефтепродуктов) с учетом изменения потребной подачи и напора гидросистемы. Существующие методики оценки энергоэффективности насосов в рабочем диапазоне имеют ограничения для применения на объектах магистральных нефтепроводов. В настоящей работе предлагается использовать с этой целью критериальную оценку по характерным точкам в диапазоне подач. Сформулированы основные положения разработанной методики. Сделан вывод о том, что ее применение при приемо-сдаточных испытаниях позволит улучшить качество оборудования, поставляемого на производственные объекты, а следовательно, энергоэффективность НПС. Currently, energy efficiency of a pumping unit is assessed based on the acceptance test results according to the efficiency value at the nominal working point. The experience of operating pumps at oil pipeline transportation facilities shows that the actual working point of the pump differs from the nominal one. This discrepancy is explained by the variability of the pumping unit process modes. In this connection, it is proposed to evaluate pump’s energy efficiency based on the test results under the actual operating conditions of the pumping equipment, in the operating range required for pumping oil (petroleum products), taking into account the change in the required supply and hydraulic system pressure. The existing methods for assessing energy efficiency of pumps in the operating range have limitations for use at main oil pipeline facilities. This study proposes to use a criteria-based assessment using characteristic points in the supply range for this purpose. The basic principles of the developed method are formulated. It is concluded that its application during the acceptance tests will improve the quality of equipment supplied to production facilities, and hence the PS energy efficiency.

scholarly journals Stray Current Protection and Monitoring Systems: Characteristic Quantities, Assessment of Performance and Verification

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6610
Author(s):  
Andrea Mariscotti
Keyword(s):  
Transportation Systems ◽  
Operating Conditions ◽  
Stray Current ◽  
Protection Efficiency ◽  
Data Presentation ◽  
Level Data ◽  
The Right ◽  
Curve Similarity ◽  
Current Monitoring ◽  
The Impact

Electrified transportation systems (ETSs) are affected by stray current problems impacting within and outside the right of way on reinforcement, buried metal structures and foundations. Stray current protection systems have recently been integrated in the track structure. Track electrical quantities are, thus, usually measured to assess track insulation and protection efficiency but should be backed up by additional measurements at the affected structures and installations, in order to assess their exposure and risk of corrosion. Ideally, a stray current monitoring system proceeds from the measurement of these quantities, to data collection and archival, to data presentation, analysis and prediction. Feasible sensors and probes, the impact of environmental conditions and uncertainty are considered for the measurement at the physical level. Data analysis is critically reviewed considering the variability of operating conditions and the effectiveness of each quantity as indicator of track insulation and protection efficiency. Given the normal spread of values, for data presentation and interpretation, suitable techniques are considered based on averaging, curve similarity and feature extraction, and also for the task of assessing compliance to limits or reference values and establishing a trend that may drive informed maintenance decision.

Dynamic Analysis of Suspended River Crossing Pipeline

2014 ◽  
Vol 638-640 ◽  
pp. 51-57 ◽  
Author(s):  
Zhi Ping Ren ◽  
Chang Hua Liu ◽  
Feng Feng Bie
Keyword(s):  
Water Flow ◽  
Bending Moment ◽  
Third Party ◽  
Long Distance ◽  
Bending Deformation ◽  
Oil Pipeline ◽  
Oil Pipelines ◽  
Flow Speeds ◽  
Arc Shape ◽  
The Impact

When the long-distance oil pipeline under rivers (referred to as river-crossing pipelines) are damaged by the third-party, they are prone to nudity or left vacant, and the oil pipelines under the action of water flow will cause pipeline failure; and the distance of suspended pipeline is longer than the allowed length will cause the pipeline resonance. In order to avoid pipelines fatigue or broken, suspended pipelines are considered as part of the arc shape, and non-suspended pipelines are considered as the linear shape of the mechanical model with the two ends of the fixed pier synchronous. The study will consider the impact of water flow, buoyancy, the gravity of pipelines and its annexes, bending deformation and bending moment, do the tense calculation for suspended pipelines with external load and the vibration analysis for suspended pipelines under different water flow speeds. The results showed that: the design of river-crossing suspended pipelines not only needs to consider the impact of water flow, buoyancy, the gravity of pipelines and its annexes, bending deformation and bending moment, but also to consider the floating vortex-induced vibration of the suspended pipeline, which should cause pipeline designers, constructors and maintainers’ attention.

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