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Steam-gas power ratio for single-shaft combined-cycle unit is an important parameter required for the performance calculation of the entire unit, which can not be measured directly by far. The mathematic models of performance indexes, such as steam turbine output power, gas turbine output power and steam-gas power ratio etc., are established based on the mass-energy balance principles. The on-line...
This paper presents an outline for a development stage model of the UK energy infrastructure. The model will use transition pathways as inputs to simulate the UK energy infrastructure toward 2050. Transition pathways are socio technical narratives that are used here to describe possible evolutions of the UK energy industry as it moves towards 2050 and a lower carbon economy. It is the aim of the authors...
The Gulf Cooperation Council (GCC) is nearing the completion of a high voltage transmission system designed to integrate the power systems of Saudi Arabia, Kuwait, Bahrain, Qatar, the United Arab Emirates and Oman. The objective of this paper is to review the underlying economics of electric supply within the GCC before interconnection, to evaluate the plans for further developments in generation...
Generally, buildings are the greatest energy consumer in the world. To satisfy their energy needs, a comprehensive solution should be considered for power generation, gas distribution network and power transmission lines. Nowadays by advent of new technologies, distributed generation seems to be a proper way. Moreover, residential sector not only is the main power consumer, but also has the highest...
This paper discusses the issue of turboexpander (TE) as distributed generation. TE is a centrifugal or axial flow turbine through which a high-pressure gas is expanded to produce work that is typically used to drive a compressor. It can be used to convert the energy of gas or vapor stream into mechanical work as the gas or vapor expands through the turbine. TE converts the wasted energy in the gas...
The excessive increase in the price of the oil barrel following the economic and political situation brought the public authority to adopt a national strategy of energy saving in order to preserve the energy resources of the country and to rationalise consumption. Among the adopted measures, we indicate theses ones: the productionpsilas optimization, the optimization of the transport and distribution...
The increasing penetration of variable speed wind turbines in the electricity grid results in a reduction of the number of connected conventional power plants. This requires changes in the way the grid frequency is controlled. Together with the wind turbines devices like fuel cells can be installed, which can be used to supply the primary frequency control contribution of the wind turbines. In this...
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