针对热油管道运行费用问题进行了分析。
This paper analyzes the operation cost problem of hot oil pipeline.
针对热油管道运行费用问题进行了分析。
Analysis of energy consumption and running cost of gas enginedriven heat pump;
热油管道运行时，沿线油温受运行历史的影响。
The oil temperature along the buried hot oil pipelines is influenced by operating schedule.
对埋地热油管道投产预热过程进行了数值模拟计算。
The process of buried hot-oil pipeline during start-up is simulated by the way of numerically simulating technology.
热油管道停输后，管内存油的温度下降，粘度上升。
When crude oil pipelines shutdown, the temperature of the oil left in the line drops and the viscosity increases.
热油管道再启动过程是一种不稳定的变物性耦合流动。
Restart process of hot oil pipeline is an unsteady property-variable coupling flow.
热油管道再启动过程是一种不稳定的变物性耦合流动。
Restart process of hot oil pipeline is kind of unstable coupled flow that physical property of oil varies with oil temperature.
热油管道再启动过程是一种不稳定的变物性耦合流动。
Unstable coupled flow usually presents during the restarting process of a hot oil pipeline system as the physical properties of the hot oil vary with its temperature.
确定热油管道允许最低进站油温不宜仅用凝点作为选择依据。
The condensation point is not the only basis for determining the allowable oil temperature at the inlet of heating station.
建立了埋地热油管道热力影响区的数学模型，并用有限元法进行了求解。
A mathematical model for determining the thermal influence zone of buried hot oil pipeline was developed and solved numerically by the finite element method.
本文对热油管道的运行优化和天然气长输管道设计也具有一定的借鉴意义。
This article is useful for the oil pipeline optimal operation and long distance gas pipeline design to some extent.
热油管道安全经济输油温度是满足管道允许停输时间要求的最低进站油温；
The safe and economic operation temperature in hot oil pipeline is the lowest temperature at the inlet of heating station to satisfy the requirement of permissible shutdown time of pipeline.
采用导热油管道间接加热的方式，对油质不会造成破坏，延长了炸油的更换周期。
Using thermal conductive tubing through indirect heating way, could not cause damage to oily, extend the frying oil change cycle.
评价埋地热油管道的的热工状况，首要的问题是计算管道周围土壤的非稳态温度场。
The calculation of the unstable temperature of the soil around pipeline is the first step to evaluate the hot oil pipeline.
研究热油管道的停输介质的温度分布场，对确定安全停输时间具有重要的指导作用。
Studying the temperature distribution of hot oil pipeline shutdown medium field, has an important role in guiding to determine the safety shutdown time.
埋地热油管道通过永冻地带时，会导致土壤解冻，进而导致管道沉陷和土壤物性参数变化。
The warm oil will produce thawing of ice rich soil adjacent to the pipeline when it crosses through permafrost zone, resulting in thaw settlement of the pipeline and variation of soil properties.
从热油管道安全经济输油的角度，讨论了确定热油管道安全经济输油温度的原则及其影响因素。
The principles of safe and economic transportation temperature in hot oil pipelines and its influencing factors were discussed.
为此，介绍了一种热油管道首站或加热站加热负荷的计算方法，以合理确定管道首站和中间站的热负荷。
The paper introduces a method for calculating the heating load of initial station or heating station of hot oil pipeline, and gives proof to it.
因此，有必要对热油管道中添加减阻剂的优化运行进行研究，制定最优运行方案，为科学决策提供依据。
So it is necessary to study the optimization operation of hot oil pipeline after adding DRA, which can make optimal scheme and provide basis for scientific decision.
根据该模型及其算法开发了热油管道优化运行软件包HOPOPT，它适用于我国大多数长输热油管道。
Based on the model and its algorithms, the software package HOPOPT has been developed for the operation optimization of hot oil pipelines.
热油管道停输后，管内油品降温收缩，管内会产生油蒸气空间，从而使管道再启动时出现启动充装过程。
Oil temperature drop and oil contraction can cause gas space growing in oil pipe and line packing during hot oil pipeline shutdown and restarting.
通过分析埋地热油管道的几何特性建立了有限区域内非稳态热油管道土壤数学模型和边界条件。并使用PHOENICS软件对该数学模型进行了求解。
The mathematical model and boundary conditions of soil temperature field in finite region is established through analysis of geometry model of underground heated pipeline.
含蜡热油管道在设计及实际运行过程中，油品密度、粘度、比热容沿程随温度变化，沿线流型与流态也不断变化，这些都是计算管道温降必须考虑的因素。
The density, viscosity and heat capacity of waxy crude oil is changed along with the temperature drop and flow type and the flow patterns are different along the pipe during the design and operation.
埋地热油管道通过永冻地带时，会导致土壤解冻，进而导致管道沉陷和土壤物性参数变化。分析管道周围土壤融化圈变化对管道系统的设计、施工和管理是必需的。
The warm oil will produce thawing of ice rich soil adjacent to the pipeline when it crosses through permafrost zone, resulting in thaw settlement of the pipeline and variation of soil properties.
埋地热油管道通过永冻地带时，会导致土壤解冻，进而导致管道沉陷和土壤物性参数变化。分析管道周围土壤融化圈变化对管道系统的设计、施工和管理是必需的。
The warm oil will produce thawing of ice rich soil adjacent to the pipeline when it crosses through permafrost zone, resulting in thaw settlement of the pipeline and variation of soil properties.
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