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首页> 外文期刊>Energy Conversion & Management >New procedure for optimal solar repowering of thermal power plants and integration with MSF desalination based on environmental friendliness and economic benefit
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New procedure for optimal solar repowering of thermal power plants and integration with MSF desalination based on environmental friendliness and economic benefit

机译：基于环境友好和经济效益的热电厂最佳太阳能重新排放的新程序及与MSF海水化的集成

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Using solar collectors to repower steam power plants is one of the cheapest methods to improve these power generation sites' technical, economic, and environmental performance. In this paper, using a comprehensive method based on economic benefits and environmental friendliness, solar collectors are designed to parallel with the feedwater heaters to repower the steam power plant. Also, an MSF desalination unit has been used to simultaneously generate power, heat, and freshwater in the repowered cycle due to the proximity of the studied steam power plant to the sea. Transient thermodynamic, exergy, economic, and environmental analyzes have been used to demonstrate performance improvements due to solar repowering. Results show that due to proper solar radiation at the site of the steam power plant, more use of solar collectors or solar factors equal to one lead to the highest economic benefits and the highest reduction in environmental impact. The solar collectors are also designed based on solar factors equal to one. The first scenario of repowering generates between 330 and 400 MW of power during the year. But in the second scenario, due to the consumption of the part of the cycle steam in the MSF unit, the amount of power generation in most months is about 310 MW. In the first and second scenarios of repowering compared to the base steam power plant, the total cost is reduced by an average of 50% and 41%, respectively. The total environmental impacts in the first and second scenarios of the repowering have been reduced by 30% and 22%, respectively, about the steam cycle. The mass flow of freshwater produced in this unit will be 115.4 kg/s. The performance ratio of the MSF unit will be 8.8, and the gain output ratio will be 9.62. The price of freshwater produced in this unit will be $0.21 per cubic meter of desalinated water.
机译：利用太阳能收集器来重新排斥蒸汽发电厂是改善这些发电场所的技术，经济和环境绩效的最便宜的方法之一。本文采用了基于经济效益和环境友好性的综合方法，太阳能收集器设计成与喷水加热器平行，以重新蒸汽发电厂。而且，由于研究的蒸汽发电厂到海的附近，已经使用MSF海水淡化单元在重新驾驶循环中同时产生电力，热量和淡水。瞬态热力学，高度，经济和环境分析已被用来展示由于太阳能重新交能而改进。结果表明，由于蒸汽发电厂现场的太阳辐射，太阳能收集器或太阳能因素等于一个导致最高的经济效益以及环境影响的最高减少。太阳能收集器也基于等于1的太阳因子设计。重新权力的第一个场景在今年的330和400 MW之间产生。但是在第二种情况下，由于MSF单元中的循环蒸汽部分的消耗，大多数月内发电量约为310兆瓦。在与基础蒸汽发电厂相比重新电力的第一和第二场景中，总成本分别降低了50％和41％。重新权力的第一和第二场景中的环境影响分别减少了30％和22％关于蒸汽循环。本机中生产的淡水的质量流量为115.4千克/秒。 MSF单位的性能比为8.8，增益输出比率为9.62。本机生产的淡水价格为每立方米淡淡的水0.21美元。

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