scholarly journals OPTIMAL DISIGN OF ENERGY SUPPLY NETS ON GRAPHS

2014 ◽  
pp. 68-73
Author(s):  
Vladimir Nikulshin ◽  
Viktoria Von Zedtwitz

In the design and operation of energy intensive systems, the possibility of improving the system’s efficiency is very important to explore. The main way of improving efficiency is through optimisation. This paper describes the application of exergy topological models and, in particular, the graph of thermoeconomical expenditure for thermoeconomical optimal design s of circled nets for energy supply (CNES). The questions of thermoeconomical optimisation of CNES, as well as suggested modelling algorithms, are illustrated in the numerical example of the optimisation of a energy supply system for a city with seven regions of energy consumption.

Author(s):  
Irina V. Provornaya ◽  

The paper analyzes the development of oil and gas supplies to the world market. The structure of oil and gas imports and exports is revealed. It is shown that taking into account the annual growth of global energy consumption, there is an increase in the supply of carbohydrates. The modern global energy supply system is highly international in nature.


Author(s):  
Ryo NAKAYAMA ◽  
Satoshi KOMEDA ◽  
Atsushi SAITO ◽  
Eriko MATSUMURA ◽  
Jiro SENDA

2019 ◽  
Vol 102 ◽  
pp. 02001
Author(s):  
Evgeny Barakhtenko ◽  
Dmitry Sokolov ◽  
Veronica Tashlykova

The conversion of existing energy systems to intelligent integrated energy systems can happen only if economic benefits due to introduction of the intelligent integrated energy systems will exceed required level of investments. Thus, it is necessary for every optimal design energy systems problem according to the purposes of the study to determine various aspects of equipment configuration, investment and a proposed unit commitment on a case-by-case basis. The studies, taking under consideration energy efficiency of renewable energy units, are particularly important as environmental safety standards are increasing. In the paper optimal design of prosumer energy supply system problem in the intelligent integrated energy system was investigated. For this purpose a super structure for an energy supply system includes different generating capacities with relevant power range. The superstructure for prosumer energy supply system consists of an electric boiler, a gas-fired boiler, a solar photo-voltaic, a solar heating system and a gas-fired CHP. An ability of district energy system to receive the excess generating energy is restricted by the constraints. The heat and electricity tariffs and the received to district energy supply system energy constraints are varying according to time period. As a result of this study, cost-effectiveness analysis of chosen equipment configuration was undertaken.


2013 ◽  
Vol 860-863 ◽  
pp. 538-543
Author(s):  
Lina Liao ◽  
Qing Rong Liu ◽  
Ying Jun Ruan ◽  
Jia Zheng Wu ◽  
Ya Peng Zhang

More and more countries are focusing on the lack of resources with the consumption of large quantities of fossil energy. The Chinese government is actively promoting the policies related to the transformation of the energy structure which will increase the proportion of clean energy consumption and reduce the proportion of fossil energy consumption in order to relieve the pressure on domestic energy. Interest in the generation of biogas from agricultural residues is increasing rapidly due to its climate benefits. This article is committed to analysis the economic performance of the biogas cogeneration energy supply system of livestock and poultry breeding plants in southern China. The model of the biogas cogeneration energy supply system of livestock and poultry breeding plants in southern China and the advices to the government will also been proposed as a result. According to the results, biogas cogeneration system is feasible in economy with reasonable device configuration and operating strategy.


2008 ◽  
Vol 128 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Takaya Yamamoto ◽  
Tomihiro Takano ◽  
Yoshiyuki Takuma ◽  
Makoto Inoue ◽  
Gen Arao

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