Two cryogenic Helium recovery processes which are based on the flash separation are investigated and analyzed. The presence of Helium in the natural gas affects shape of its phase envelope. Effect of various components concentration on the natural…
As natural gas is not uniformly distributed in different regions of the world, and gas tanks are concentrated in specific geographical areas, gas transfer is a key gas-related industry that greatly contributes to the expansion of this energy…
Natural gas releases 45–50% less CO2 emissions as compared with coal and the liquefaction process is employed for storage and transport of liquefied natural gas that is an energy-intensive process. Numerous scientific efforts are being directed to…
Natural gas liquefaction allows to transport this energy vector over long distances from stranded reserves to the market. Pure Refrigerant Cascade processes will be responsible for more than 105 mtpa of the LNG base-load production by 2021. Classical…
China’s second offshore natural gas hydrate production reveals the urgency and potential demand for ship-based gas storage and transportation technology. Three possible gas storage processes including hydrate-based natural gas (HNG), pressurized…
In this paper, exergy and economic analyses are carried out on a 30" crude oil transportation pipeline and related pump stations. The exergy destructions and losses of the components and the entire system were determined in the operation, resulting…
According to the exergy balance relationship among the various items in the crude oil transportation process system, the exergy balance equation is established and each exergy loss is calculated. In a sense, the essence of exergy analysis method…
Emulsification behaviors of crude oil-water system has significant effects on flow pattern and pressure drop of crude oil-water two phase flow. The degree of emulsification, which is greatly affected by shearing intensity, water volume fraction and…
In order to establish a comprehensive exergy consumption evaluation system for crude oil pipeline transportation system, this paper proposed the definition and calculation method of unavoidable exergy loss based on the exergy analysis method and…
Three box exergy analysis optimisation method is applied to oil field system in order to identify and improve the weak links of crude oil gathering and transportation system. The universal black box, white box, grey box models and balance equations…
In this paper, the chemical exergy in waxy crude oil pipeline transportation process was mainly calculated and studied. On the one hand, the specific chemical reaction exergy of waxy crude oil in oilfield was derived according to the common…
Based on exergoeconomic theory, the energy consumption situation for a typical oil transfer station in eastern China is evaluated. According to the analysis of the distribution for logistics and exergy flow, the crude oil gathering and transportation…
Taking a typical oil transfer station in eastern China as an example in this paper, exergy economics theory in algebraic pattern is applied to the energy system of the oil transfer station on the basis of the exergy analysis. By analysing the cost…
This study presents a comprehensive environmental impact and economic assessment of the use of natural gas in potentially cleaner locomotives. An integrated direct methane-solid oxide fuel cell powering system is proposed and analyzed using energy…
Energy consumption plays a dominant role in the technical and economic indicators of pipeline operation, and is greatly influenced by operation schemes. However, the conventional energy consumption model is often analyzed from the perspective of…
In order to ensure the crude oil pipeline process smoothly, the driving force has a certain exergy loss. Based on the exergy analysis method, according to the required minimum potential difference of pipeline transportation, the unavoidable exergy…
Transporting energy in liquefied forms results in reduction in volume, which enables energy to be transported economically over long overseas distances. In this study, liquefied natural gas, liquid ammonia and methanol are proposed to transport the…
In summer, the coastal areas of southern Iran suffer from the freshwater shortage and electricity instability. Meanwhile, this region benefits from the high intensity of solar radiation and the huge potential of brackish water resources. Hence, this…
A novel efficient and entirely green hybrid energy conversion system comprising compressed air energy storage and Kalina KCS11 is proposed for peak shaving application and grid stability. The use of high-temperature thermal energy storage as a…
The solar air heater (SoAH) absorbs the solar radiation and convert it into thermal energy. The drawback of solar radiation is its uneven distribution in time and it is the main roadblock for further expansion of solar energy. The technical…
This paper reviews cascaded or multiple phase change materials (PCMs) approach to provide a fundamental understanding of their thermal behaviors, the performance in terms of heat transfer uniformity, and the influence of input parameters and…
China’s second offshore natural gas hydrate production reveals the urgency and potential demand for ship-based gas storage and transportation technology. Three possible gas storage processes including hydrate-based natural gas (HNG), pressurized…
In order to propose the control strategies based on exergy to realize efficient and energy-saving operation of the engine, the energy and exergy balance under sensitive boundary conditions were analyzed with the first and second laws of…
A comparative energy and exergy analysis was experimentally performed using a bi-fuel compressed natural gas (CNG) spark ignition engine. The experiments were conducted for gasoline and CNG fuel at 1700 rpm and different operating loads from 5 to 30…
Renewable energy, such as geothermal, is very effective in reducing the effects of greenhouse gas emissions. Therefore, a geothermal-based multi-generation system can produce commodities for power, hydrogen, liquefied natural gas, cold energy…
Selection of mixed refrigerant has a significant impact on the performance of the single mixed refrigerant process for natural gas liquefaction. However, current studies mainly focus on optimizing the fraction of the mixed refrigerant with pre-fixed…
This paper concerns a novel integrated system for geothermal-based power and hydrogen generation and blending of hydrogen into natural gas to feed household devices, such as gas stove and combi boiler. The system includes a combined flash and binary…
Dual-mixed refrigerant (DMR) process is a promising candidate for liquefying the natural gas (LNG) at onshore as well as offshore sites, thanks to its higher liquefaction capacity and flexibility in using full gas turbines. DMR involves two mixed…
Multi-component refrigerant compression refrigeration cycles have a high coefficient of performance and difficult controllability. In these systems, it is not easily possible to keep the ratio of stream compositions constant in the event of a leak.…
The study proposes a novel integrated process in which ionic liquid is utilized to control carbon dioxide (CO2) emissions from the natural gas combined with a single mixed refrigerant-based liquefaction process to assist safe transportation over long…
The thermal energy conversion of natural gas (NG) using appropriate configuration cycles represents one of the best nonrenewable energy resources because of its high heating value and low environmental effects. The natural gas can be converted to…
Emulsification behaviors of crude oil-water system has significant effects on flow pattern and pressure drop of crude oil-water two phase flow. The degree of emulsification, which is greatly affected by shearing intensity, water volume fraction and…
Offshore processing of natural gas with 44%mol carbon dioxide at remote deep-water oil-and-gas fields is invariably characterized by low-efficiency power generation via gas-fired turbines releasing hot flue-gas and entailing high degradation of…
Crude oil heating is a significant and energy intensive process in crude oil production. Large amounts of heat are required to preheat crude before it processed in a crude distillation unit. This study aims to investigate a novel thermal design for…
Deepwater oil and associated gas productions resort to floating rigs operating at continuously decreasing gas-loads during the last three quarters of the field campaign. As centrifugal compressors are sized at maximum loads, anti-surge recycles are…
Enhanced sustainability and efficiency are among the prime indicators to achieve in the power generation sector of any country. The decline in efficiency might be caused by improper utilization of fuels and increasing entropy in outdated generation…
The current study deals with the thermodynamic modeling of an innovative integrated plant based on solid oxide fuel cell (SOFC) with liquefied natural gas (LNG) cold energy supply. For the suggested innovative plant the energy, and exergy simulations…
Effective removal of heavy hydrocarbons prior to liquefaction processes has attracted attention. The purpose of this study was to introduce a modified version of Galileo self-refrigerated liquefaction process and to investigate economical removal of…
In this study, a novel multigeneration system is considered from energy, exergy, and economic points of view. The combined system composed of biomass gasifier, CO2 cycle, cooling system, multi-effect distillation (MED), and electrodialysis was…
As liquefied natural gas (LNG) is becoming a more and more vital role in the global energy market, the enormous amount of cold energy released during its regasification process has attracted worldwide attention. A three-stage traveling-wave…
The scarcity of energy supplies has recently become one of the most pressing global issues. Jordan, in particular, is facing a significant problem in terms of fossil fuel resources, particularly in generating electrical energy from thermal power…
In this paper, both renewable hydrogen production and blending with natural gas for the existing distribution pipelines are studied through a unique trigeneration systems development, analysis, and assessment. A comparison with various conventional…
Offshore processing of natural gas with 44%mol carbon dioxide at remote deep-water oil-and-gas fields is invariably characterized by low-efficiency power generation via gas-fired turbines releasing hot flue-gas and entailing high degradation of…
This paper concerns a novel integrated system for geothermal-based power and hydrogen generation and blending of hydrogen into natural gas to feed household devices, such as gas stove and combi boiler. The system includes a combined flash and binary…
Natural gas releases 45–50% less CO2 emissions as compared with coal and the liquefaction process is employed for storage and transport of liquefied natural gas that is an energy-intensive process. Numerous scientific efforts are being directed to…
In this study, to adjust the dew point of natural gas, two methods of Joule-Thomson and mechanical refrigeration have been analyzed in terms of technical, energy and exergy. The basis of design was a natural gas feed with an intensity of 1743…
In this chapter, the application of energy and exergy analyses to crude oil distillation is described. Energy analysis is conventionally used to optimize the yield of desired products in crude oil distillation, but we seek to optimize the utilization…
In this chapter, the application of energy and exergy analyses to cryogenic and liquefaction systems is described. Cryogenic engineering is the design, development, and improvement of low-temperature (usually below −150°C or 123K) systems and…
An industrial-scale molasses-based bioethanol production system was modeled and studied by conducting exergy, exergoeconomic, and exergoenvironmental analyses. The entire process was represented by a control volume, and its exergoeconomic and…
In this study, exergy and life cycle-based enhanced environmental (EXEN) and enviro-economic (EXENEC) analyses are performed on a micro gas turbine, operated with natural gas and alternative mixtures of natural gas-ammonia and natural gas-methanol. A…