Exergetic analysis of solar concentrator aided coal fired super critical thermal power plant (SACSCTPT)
Exergetic analysis of solar concentrator aided coal fired super critical thermal power plant (SACSCTPT)
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DOI：
10.1007/s10098-012-0492-3
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发表时间：
2013-02
影响因子：
4.3
通讯作者：
V. Reddy;S. Kaushik;S. K. Tyagi
中科院分区：
文献类型：
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作者：
V. Reddy;S. Kaushik;S. K. Tyagi
本文对燃煤超临界热电厂（CSCTPT）和太阳能聚光辅助燃煤超临界热电厂（SACSCTPT）进行了能量和火用比较分析。利用线性菲涅耳反射（LFR）太阳能聚光器的光学分析，预测了焦距和反射器宽度对SACSCTPT性能研究中重要参数局部聚光比和倾斜角的影响。对浓缩比和流体入口温度对LFR太阳能聚光器性能的影响进行了能量分析和火用分析。用太阳能聚光辅助给水加热器（SAFWH）代替了CSCTPT所有的低压和高压给水加热器，发电能力瞬间增加了约20%。用SAFWH代替高压给水加热器对蒸汽进行再热，使煤耗增加3.35%。SACSCTPT的能量效率与单独的太阳能热电厂相比高，与燃煤超临界热电厂相比低。此外，对于SAFWH，发现土地面积要求为4.78公顷/兆瓦。
Comparative energetic and exergetic analysis of coal-fired supercritical thermal power plant (CSCTPT) and solar concentrator aided coal fired supercritical thermal power plant (SACSCTPT) have been carried out in this article. Optical analysis of Linear Fresnel reflecting (LFR) solar concentrator is used to predict the effect of focal distance and width of reflector upon the local concentration ratio and the tilt (θ) angles that are important parameters for SACSCTPT performance studies. Energetic and exergetic analysis for evaluating the effect of concentration ratio and inlet temperature of the fluid on LFR solar concentrator are carried out. An instantaneous increase in power generation capacity of about 20 % is observed by substituting turbine bleed streams to all the low pressure and high pressure feed water heaters of CSCTPT with solar concentrator aided feed water heaters (SAFWH). Coal consumption is increased by 3.35 % for reheat of the steam by substitution of high pressure feed water heaters with SAFWH. Energetic efficiencies of SACSCTPT appear high as compared to the solar alone thermal power plant and low as compared to coal-fired super critical thermal power plants. Furthermore, for a SAFWH, it is found that the land area requirement is 4.78 ha/MW.