نتایج جستجو برای: electricity production

تعداد نتایج: 642943  

Journal: :Computers & Chemical Engineering 2015
Hubert Hadera Iiro Harjunkoski Guido Sand Ignacio E. Grossmann Sebastian Engell

Energy-intensive industries can take advantage of process flexibility to reduce operating costs by optimal scheduling of production tasks. In this study we develop a MILP formulation to extend a continuous-time model with energy-awareness to optimize the daily production schedules and the electricity purchase including the load commitment problem. The sources of electricity that are considered ...

2011
Luis A. Vega

Worldwide information indicates that although there are sufficient petroleum resources to meet demand for about 50 years, production is peaking and we will face a steadily diminishing petroleum supply. This situation justifies re-evaluating OTEC for the production of electricity, desalinated water and energy intensive products. It is postulated that the US should begin to implement the first ge...

2006
Paula Ferreira

The electricity market in Portugal was recently opened to all consumers. However, it remains highly concentrated in terms of control of production and supply and the long-term power purchase arrangements still coexist with free market. This paper discusses the electricity market restructuring process in Portugal, presenting its main marks over the past years and the present situation. The evolu...

2015
S. Pineda A. J. Conejo

a r t i c l e i n f o Electricity producers participating in electricity markets face risks pertaining to both selling prices and the availability of the production units. Among electricity derivatives, options represent an adequate instrument to manage these risks. In this paper, we propose a multi-stage stochastic model to determine the optimal selling strategy of a risk-averse electricity pr...

2004
Juri Hinz

The purpose of this paper is to analyze the real–time trading of electricity. We address a model for an auction–like trading which captures key features of the real–world electricity markets. Our main result establishes that, under certain conditions, the expected total payment to the electricity producers is independent on particular auction type. This result is analogous to the revenue equiva...

2016
Naoko Yoshida Yasushi Miyata Kasumi Doi Yuko Goto Yuji Nagao Ryugo Tero Akira Hiraishi

Graphene oxide (GO) is reduced by certain exoelectrogenic bacteria, but its effects on bacterial growth and metabolism are a controversial issue. This study aimed to determine whether GO functions as the terminal electron acceptor to allow specific growth of and electricity production by exoelectrogenic bacteria. Cultivation of environmental samples with GO and acetate as the sole substrate cou...

2015
Mao Tan Hua-li Yang Bin Duan Yong-xin Su Feng He

Time-of-Use (TOU) electricity pricing provides an opportunity for industrial users to cut electricity costs. Although many methods for Economic Load Dispatch (ELD) under TOU pricing in continuous industrial processing have been proposed, there are still difficulties in batch-type processing since power load units are not directly adjustable and nonlinearly depend on production planning and sche...

This paper covers the estimation of the average yearly production of an appropriate wind turbine for different locations in Iran. The effects of topography, the influence of obstacles such as buildings and shelters, the collective effects of the surrounding terrain, roughness classifications, and orographic elements such as hills, cliffs, etc., all have been included in the calculations. A full...

Journal: :Computers & Chemical Engineering 2004
Kentaro Hirata Haruo Sakamoto Lionel O'Young Kwok-Yuen Cheung Chi-Wai Hui

Mitsubishi Kasei and Mitsubishi Petrochemical merged to become Mitsubishi Chemical in 1994 making it the largest chemical company in Japan. This created an opportunity for improving their production systems especially for those production sites that are physically built next to each other. Mitsubishi Yokkaichi production site is a typical example, which consisted of three production sites in th...

2008
Elizabeth Hooper Andrei Medvedev

The paper provides an overview of the generation of electricity in 10 countries in South East Europe during 1995-2004. Using the latest available statistics the potential of the nascent integration of the electricity markets in South East Europe is explored. We conduct a cross-country analysis of electricity production based on different types of fuel used. The region has a low level of gasific...

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