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Analysis on influencing factors of buried hot oil pipeline

(pipe) (pipe) Analysis on influencing factors of buried hot oil pipeline Analysis on influencing factors of buried hot oil pipeline

4 rowsDec 01, 2019In the following comparative analysis, all the other parameters were unchanged except for special Analysis on influencing factors of buried hot oil pipeline

How to calculate heat flow lines?How to calculate heat flow lines?1. Consider lines of symmetry and choose sub-system if possible. 2. Symmetry lines adiabatic and count as heat flow lines. 3. Identify constant temperature lines at boundaries. Sketch isotherms between the boundaries. 4. Sketch heat flow lines perpendicular to isotherms, attempting to make each cell as square as possible. Graphical Solution2-D Conduction Finite-Difference Methods(pipe) What drives crude oil prices?What drives crude oil prices?The cost of crude oil is the largest component of the retail price of gasoline, and the cost of crude oil as a share of the retail gasoline price varies over time and across regions of the country. Many factors affect crude oil prices; learn about seven major factors that influence crude oil prices in What Drives Crude Oil Prices?Factors affecting gasoline prices - U.S. Energy Analysis on influencing factors of buried hot oil pipeline(pipe) What factors affect the pipe wall thickness requirement?What factors affect the pipe wall thickness requirement?There are many factors that affect the pipe-wall-thickness requirement, which include The maximum and working pressures Maximum and working temperatures Chemical properties of the fluidPipeline design consideration and standards - PetroWiki

2-D Conduction Finite-Difference Methods

Shape Factors, Cont. Example Buried Hot Pipe A pipeline, used for the transport of crude oil, is buried in the earth such that its centerline is a distance of 1.5 m below the surface. The pipe has an outer diameter of 0.5 m and is insulated with a layer of cellular glass 100 mm thick. What is the heat loss per unit length of pipe under conditions(pipe) 4 Oil Pipeline Stocks to Combat Coronavirus-Led Industry Analysis on influencing factors of buried hot oil pipeline(steel) 4 Oil Pipeline Stocks to Combat Coronavirus-Led Industry Weakness Analysis on influencing factors of buried hot oil pipeline Zacks-ranked industries outperforms the bottom 50% by a factor of more than 2 to 1. Analysis on influencing factors of buried hot oil pipeline it wants to run its economy too hot Analysis on influencing factors of buried hot oil pipeline(pipe) A new model of overall heat transfer coefficient of hot Analysis on influencing factors of buried hot oil pipeline(steel) Aug 01, 2020Applying the dimensionless analysis principle, the functional relations between the overall heat transfer coefficient and those factors could be showed as follows (1) f (K, T 1, , v, , d, l, c, T 0, W t, t) = 0 Where, T 1 is outlet oil temperature, v is velocity, is oil density, is dynamic viscosity, c is specific heat capacity, T 0 is environmental temperature, W t is wax deposition rate, t is running time

Analysis of Hot Oil Pipeline Stress Influencing Factors Analysis on influencing factors of buried hot oil pipeline

In this paper, in order to explore the main factor of hot oil pipeline stress and the location of key points, we build the XX hot oil pipeline stress analysis model used CAESAR II software, Analysis on influencing factors of buried hot oil pipeline(pipe) Analysis of Hot Oil Pipeline Stress Influencing Factors Analysis on influencing factors of buried hot oil pipeline(steel) In this paper, in order to explore the main factor of hot oil pipeline stress and the location of key points, we build the XX hot oil pipeline stress analysis model used CAESAR II software, analysis of the impact of changes in temperature and pressure on piping stress when hot oil pipeline running, draw hot oil pipeline stress distribution, clearly identifies the location of key points of stress concentration, and we have come to that temperature is a major factor (pipe) Analysis on influencing factors of buried hot oil pipeline(steel) Analysis on influencing factors of buried hot oil pipeline Dai Zhonghua Analysis on influencing factors of buried hot oil pipeline the pipe wall and the oil in the soil to form a differential equation for the cooling analysis of the hot oil pipeline Analysis on influencing factors of buried hot oil pipeline

Author Xiao Nan Wu, Shi Juan Wu, Hong Fang Lu, Jie Wan, Jia Li Liu, Wei Tao Li, Zi Lin LiuPublish Year 2014Sensitivity analysis of heat dissipation factors in a hot Analysis on influencing factors of buried hot oil pipeline

Sensitivity analysis of heat dissipation factors in a hot oil pipeline based on orthogonal experiments. Analysis on influencing factors of buried hot oil pipeline Keywords Heat transfer, Buried pipeline, Waxy crude oil, Influencing factors.(pipe) Cited by 1Publish Year 2019Author Dai Zhonghua MATERIAL STEEL PIPE INSULATING LAYER ASPHALT SOIL Thickness (mm) 4 40 5 Density (kg/m 3) 4850 60 900 1700 Coefficient of heat conductivi Analysis on influencing factors of buried hot oil pipeline 48 0.04 0.15 1.4 Specific heat capacity J/ (Kk Analysis on influencing factors of buried hot oil pipeline 500 700 2300 1300 4 rows on sciencedirect(PDF) Analysis on influencing factors of buried hot oil Analysis on influencing factors of buried hot oil pipeline(steel) The influence factors such as soil depth, atmospheric temperature, initial temperature of crude oil and thermal insulation materials on the total freezing time of crude oil in the pipeline were Analysis on influencing factors of buried hot oil pipeline(pipe) Cited by 1Publish Year 2019Author Hang Dong, Jian Zhao, Weiqiang Zhao, Minglin Si, Junyang LiuMethod of computing the maximum flow stoppage time (steel) From the above analysis, we can draw the conclusions that the hot oil pipelines range of influence on the earths temperature field is larger when the pipeline is not insulated. It is also higher than the depth of constant temperature layer of the earth, 2.3 The physical model of the buried oil pipeline

Cited by 1Publish Year 2020Author Ying Xu, Xin Nie, Xiao-Yan Liu, Qinglin Cheng, Yang Liu, Zhonghua DaiSteady state analysis of heat transfer in a fully buried Analysis on influencing factors of buried hot oil pipeline

Jan 01, 2020Heat loss in a buried pipeline is controlled by the pipeline thermal resistance. Heat loss results in crude oil temperature drop which leads to wax formation and deposition and eventual blocking of the pipeline. This work developed a model of heat transfer in the buried pipeline and obtained closed solution of the thermal resistance of the pipeline with constant heat flux boundary condition.(pipe) Cited by 3Publish Year 2020Author O.K. Otomi, U.P. Onochie, A.I. ObanorCase Studies in Thermal Engineering Vol 16, December Analysis on influencing factors of buried hot oil pipeline(steel) select article Analysis on influencing factors of buried hot oil pipeline. Analysis on influencing factors of buried hot oil pipeline Analysis on influencing factors of buried hot oil pipeline. Dai Zhonghua. Article 100558 Download PDF. Article preview. select article Experimental study on fire-extinguishing efficiency of protein foam in diesel pool fire.(pipe) FLOW ASSURANCE Maintaining plug-free flow and (steel) The hydrocarbon deposits are heated above the pour point by hot oil, hot water, or steam circulated in the system. This practice, however, has a drawback. The use of hot oil treatments in wax-restricted wells can aggravate the problem in the long run, even though the immediate results appear fine.

Factors affecting gasoline prices - U.S. Energy Analysis on influencing factors of buried hot oil pipeline

The cost of crude oil is the largest component of the retail price of gasoline, and the cost of crude oil as a share of the retail gasoline price varies over time and across regions of the country. Many factors affect crude oil prices; learn about seven major factors that influence crude oil prices in What Drives Crude Oil (pipe) Hot buried Oil Lines - Pipelines, Piping and Fluid Analysis on influencing factors of buried hot oil pipeline(steel) Analysis on influencing factors of buried hot oil pipeline(steel) Increasing consumption of natural gas, rising demand for energy and the discovery of new gas and oil reserves, high investments lined up for pipeline business are some key factors influencing the Analysis on influencing factors of buried hot oil pipeline(pipe) Material Steel pipe Insulating layer Asphalt Soil Thickness (mm) 4 40 5 Density (kg/m 3) 4850 60 900 1700 Coefficient of heat conductivity (W/mK) 48 0.04 0.15 1.4 Specific heat capacity J/(Kkg) 500 700 2300 1300 Feb 9 2021Author: Dai ZhonghuaCited by: 1Publish Year: 2019Analysis on influencing factors of buried hot oil pipeline Analysis on influencing factors of buried hot oil pipeline(steel) Was this helpful?People also askWhat are the considerations of pipeline design?What are the considerations of pipeline design?The considerations and standards guiding pipeline design insures stability and integrity in the industry. The fluid flow equations and formulas presented thus far enable the engineer to initiate the design of a piping or pipeline system, where the pressure drop available governs the selection of pipe size.Pipeline design consideration and standards - PetroWiki

Numerical Study on the Effect of Wax Deposition on the Analysis on influencing factors of buried hot oil pipeline

A hot crude oil pipeline transporting Daqing crude in the Northeast of China had not been pigged over the past four years due to the reductions on throughputs. The hot crude pipeline is 436.3 km long and its diameter is 720 × 8 mm. The maximum allowed inlet oil temperature of each pipeline interval is 70°C and the maximum allowed operation Analysis on influencing factors of buried hot oil pipeline(pipe) Numerical study on the thermal characteristics and its Analysis on influencing factors of buried hot oil pipeline(steel) Sep 01, 2019The temperature drop process of the buried hot oil pipeline is simulated by Liu , which showed that the temperature of the oil slowly decreases because the zone extends during shutdown, and the initial oil temperature has no effect on the size of the zone influenced by the temperature drop if the soil properties are well-proportioned.(pipe) Sensitivity analysis of heat dissipation factors in a hot Analysis on influencing factors of buried hot oil pipeline(steel) Atmospheric temperature is the main factor affecting the total freezing time of crude oil in pipeline. The lower the ambient temperature, the faster the oil dissipates heat. Figure 6 depicts the temperature-drop rule of crude oil at typical temperatures for different times in winter in northeast China. It gives the temperature-drop curves of the pipe center at atmospheric temperatures of 253, 258, and 263 K.

Simulation on the Temperature Drop Rule of Hot Oil Pipeline

By using data of a real buried pipeline, it was shown that the thermal resistance increases with depth of burial and burial depth of 0.6-2.5 m is most effective to conserve heat in buried pipelines.(pipe) Study on permafrost thermal stability and disturbance of Analysis on influencing factors of buried hot oil pipeline(steel) The MoheDaqing oil pipeline (MDOP) of ChinaRussia crude oil pipeline (CRCOP) goes through a 441 km permafrost in high-latitude regions, the most critical problem of which is the thawing settlement of the oil pipe. Global warming effect, oil temperature, and construction technology causes the increase of ground temperature and accelerates the degradation of permafrost.(pipe)2.1. Analysis of influencing factors

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