Analysis of Maisotsenko open gas turbine power cycle with a detailed air saturator model
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This article presents a study on new electric power gas turbines and the advent of shale natural gas, which now are upending electrical energy markets. Energy Information Administration (EIA) results show that total electrical production cost for a conventional coal plant would be 9.8 cents/kWh, while a conventional natural gas fueled gas turbine combined cycle plant would be a much lower at 6.6 cents/kWh. Furthermore, EIA estimates that 70% of new US power plants will be fueled by natural gas. Gas turbines are the prime movers for the modern combined cycle power plant. On the natural gas side of the recently upended electrical energy markets, new shale gas production and the continued development of worldwide liquefied natural gas (LNG) facilities provide the other element of synergism. The US natural gas prices are now low enough to compete directly with coal. The study concludes that the natural gas fueled gas turbine will continue to be a growing part of the world’s electric power generation.
Liquefied natural gas
Renewable natural gas
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In order to reduce auxiliary power consumption and improve the unit efficiency, a scheme is proposed that the steam turbine is used to drive the induced draft fan (IDF). An analysis is conducted on the design of two systems in which back pressure stream turbine and condensing turbine are adopted respectively. Based on the phase-3 Huaneng Qinbei Power Plant, two steam-driven and motor-driven schemes are compared in terms of technology and economy and some conclusions are achieved, which can provide a reference for relevant engineering design.
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The F-class gas turbine is the largest gas turbine in China,there isn't any experience in the installation and management presently at home.Combining with the installation practice of 9F-class gas turbine project in Huizhou Natural Gas Power Generation Corporation Ltd.,the paper briefs the hoisting-installation method and procedures as well as the internal cleaning method of system pipe. The combined cycle unit has gone into operation for one year,operating status is well.
Corporation
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Peaking power plant
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There is growing optimism about the prospects for large natural gas reserves in shale formations. This paper explores the feasibility vis-àˆˆa0-vis coal power generation of a new approach for decarbonized natural gas power generation. Key features of process designs examined here are co-production of synthetic transportation fuels with electricity and co-feeding of some biomass with natural gas in such co-production systems. Key questions addressed in the analysis of these systems are: (1) can the competitiveness of natural gas in economic dispatch be improved vis-àˆˆa0-vis a natural gas combined cycle, and (2) can the GHG emissions price needed to induce CCS for natural gas power generation be reduced from that required to induce CCS for NGCC. We find that gas/biomass co-production systems with CCS will be able to defend high capacity factors in economic dispatch at projected oil prices with only modest GHG emission prices. We also find that the breakeven GHG emission price needed to induce CCS for natural gas power generation is reduced considerably vis-àˆˆa0-vis NGCC-CCS.
Renewable natural gas
Natural gas prices
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Natural gas-fired power generation has developed rapidly in the United States during the past decade. In April 2015, it was the first time that electricity production from natural gas sources surpassed coal-fired. The multiple factors supporting the development of natural gas-fired power generation in the US can be summarized as three aspects. First, environmental policy not only boosts the rapid development of natural gas-fired power generation, but also inhibits the coal to some extent. Second, although the price of natural gas as raw materials for electricity is higher than coal, the comprehensive cost is lower than coal, benefiting from low cost advantage of construction investment and operation maintenance. Finally, as their cost can be compensated partly in the electricity price, natural gas-fired power generation enterprises can get marginal profit and a good environment is created for the development of gas-fired power generation. According to the experience of natural gas-fired power generation in the US and the reality of China, it is suggested to strengthen the environmental protection policy regulation; accelerate technology RD to step up gas turbine construction; improve gas electricity price linkage mechanism; boost the direct supply for natural gas-fired power generation and large industrial user to decrease costs of intermediate links.
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Renewable natural gas
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In this paper two options for H2 production, by means of natural gas, are presented and their performances are evaluated when they are integrated with advanced H2/air cycles. In this investigation two different schemes have been analysed: an advanced combined cycle power plant (CC) and a new advanced mixed cycle power plant (AMC). The two methods for producing H2 are as follows: • steam methane reforming: it is the simplest and potentially the most economic method for producing hydrogen in the foreseeable future; • partial oxidation of methane: it could offer an energy advantage because this method reduces energy requirement of the reforming process. These hydrogen production plants require material and energetic integrations with power section and the best interconnections must be investigated in order to obtain good overall performance. With reference to thermodynamic and economic performance, significant comparisons have been made between the above introduced reference plants. An efficiency decrease and an increase in the cost of electricity has been obtained when power plants are equipped with a natural gas decarbonisation section. The main results of the performed investigation are quite variable among the different H2 production technologies here considered: the efficiency decreases in a range of 5.5 percentage points to nearly 10 for the partial oxidation of the natural gas and in a range of 8.8 percentage points to over 12 for the steam methane reforming. The electricity production cost increases in a range of about 41–42% for the first option and in a range of about 34–38% for the second one. The AMC, coupled with partial oxidation, stands out among the other power plant solutions here analysed because it exhibits the highest net efficiency and the lowest final specific CO2 emission. In addition to this, economic impact is favourable when AMC is equipped with systems for H2 production based on partial oxidation of natural gas.
Power-to-Gas
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Methane reformer
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Ram air turbine
Retrofitting
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Natural gas will be the first energy resource in the twenty-first century. Natural gas combined cycle power-generation is the advanced way to generate power in the world at the present time. To suit the needs of rapid economic development in our country, it is necessary to develop some power plants using natural gas combined cycle in a planned way. At present, the price of natural gas is comparatively high, if the price can be lowered to below 0.8 Yuan/m 3, then the natural gas combined cycle power-generation will compete with the conventional coal-fired power plants in the economic aspect.
Natural gas prices
Renewable natural gas
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