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Hybridizing solar energy and coal-fired steam power plant is one of most attractive approaches of cost-efficient solar electricity in the present. By using the concentrated solar heat at around 300 °C to replace the bleed steam of the turbine for preheating feed-water of coal-fired steam cycle, higher solar-to-power efficiency is possibly achieved in that the conversion of solar to power can utilize...
This study discusses the thermodynamic performance of a solar-hybrid coal-fired power plant that uses solar heat with temperature lower than 300°C to replace the extracted steam from a steam turbine to heat the feed water. Through this process, the steam that was to be extracted can efficiently expand in the steam turbine to generate electricity. The flow rate of steam returning to the turbine retains...
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