نتایج جستجو برای: natural gas transmission network

تعداد نتایج: 1554736  

Journal: :International Journal of Innovative Research and Development 2019

2012
Nikan Noorbehesht

Most of gas sources are located in long distances from consumption centers. Gas is sent to final consumption points sometimes thousands kilometers far from their sources after extraction. So according to gas industries development and improvement of its transmission industries, technical developments are necessary in order to analyze the gas transmission system. In this study for the first time...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده فنی 1388

چکیده ندارد.

Gas hydrate often occurs in natural gas pipelines and process equipment at high pressure and low temperature. Methanol as a hydrate inhibitor injects to the potential hydrate systems and then recovers from the gas phase and re-injects to the system. Since methanol loss imposes an extra cost on the gas processing plants, designing a process for its reduction is necessary. In this study, an accur...

Energy hub is a concept relates various energy carriers which has been expanded in recent years. Operation of energy hub is often attended with uncertainties. Therefore, this paper presents a linear model based on information gap decision theory (IGDT) to solve the energy hub problem. This approach can consider plenty of uncertainties, simultaneously. Energy hub under study includes a combined ...

Ahmad J.Afshari Seyed Hossain Ebrahimi

The technical equipment developed and used in both installation and operation processes in refineries, oil and gas pipelines, and gas booster stations has always been expensive. Hence, managers at different organizational levels are keen to find methods to control and reduce these costs. Generally speaking, the operators in a gas booster station choose the operating devices without considering ...

In this paper we propose a model for coordinated planning of power and natural gas systems, as a part of electricity supply chain. This model takes into account costs and constraints of both systems, and with hiring simplifications and linearization methods transforms initially nonlinear formulation to a mixed integer linear programming (MILP) problem. Natural gas would be assumed steady state,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده مهندسی عمران 1386

در تحقیق حاضر دو هدف کلی دنبال شده است. هدف اول یافتن مدل های احتمالاتی برای خرابی لوله های مدفون در حالات شایع بارگذاری لرزه ای است. دست یابی به مدل احتمالاتی خرابی لوله ها در واقع ابزار اصلی یافتن برآورد از زیان شبکه است. در محاسبه احتمال خرابی لوله ها پارامترهایی مانند خوردگی، ابعاد لوله و میزان نشست زمین مستقیماً در روابط داخل شده اند. که از این نظر مدل های پیشنهادی دارای امتیاز است. هدف دوم...

2012
Bob Weinhold

Natural gas is lauded as a cleaner-burning fuel than either coal or oil, but getting the fuel out of the ground can be a dirty process, especially given the widespread adoption of the technology known as hydraulic fracturing (" fracking "). Concerns about toxic air emissions from previously unregulated fracking sites led to the U.S. Environmental Protection Agency announcement on 18 April 2012 ...

Afshin Bakhtiari Mahdi Akbari Mohammad Samipoor Giri مجتبی شریعتی نیاسر,

In natural gas treatment, the removal of CO2 and H2S in acid gases is a critical concern. There are various purification technologies that can be used for the removal of acid gas impurities. Absorption of acid gas into amines is one preferred method in gas industries. In the past, single amines was used, but recently in order to improve absorption performance, mixed amines with different solubi...

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