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首页> 外文期刊>Energy Equipment and Systems >Developing off-design model of Yazd integrated solar combined cycle for analyzing environmental benefits of using solar energy instead of supplementary firing
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Developing off-design model of Yazd integrated solar combined cycle for analyzing environmental benefits of using solar energy instead of supplementary firing

机译：开发Yazd集成太阳能联合循环的非设计模型，以分析使用太阳能代替辅助燃烧的环境效益

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An integrated solar combined cycle (ISCC) is analyzed at "off-design" operating conditions. Using the principles of thermodynamics heat and mass transfer a computer code is developed in FORTRAN programming language to simulate the system’s hourly performance under steady state conditions. Three scenarios are considered for the study. In the first one, only the combined cycle (CC) is studied. In the second scenario, two solar heat exchangers are added to the system (ISCC) to produce some extra steam fed to the steam turbine for more power production. In the third one, as that of the ISCC scenario, a supplementary firing is used instead of solar heat exchangers to produce the same power. The main performance parameters are calculated for the hourly variation of solar direct normal irradiation intensity (DNI) and ambient air temperature for analyzing environmental benefits of using solar energy instead of supplementary firing. Results show that the contribution of solar energy in the annual produced power by the ISCC scenario is 75.14 GWh, which is 2.1% of the whole. In addition, it is found that using solar energy leads to an annual reduction of 36.13 Kton in the produced CO2 and an annual fuel saving of 3.76 ton.
机译：在“非设计”运行条件下分析集成太阳能联合循环（ISCC）。利用热力学传热和传质的原理，用FORTRAN编程语言开发了计算机代码，以模拟系统在稳态条件下的每小时性能。该研究考虑了三种情况。在第一个中，仅研究组合循环（CC）。在第二种情况下，将两个太阳能热交换器添加到系统（ISCC）中，以产生一些额外的蒸汽，该蒸汽被供给至蒸汽轮机以产生更多的电力。在第三种方案中，与ISCC方案一样，使用辅助点火代替太阳能热交换器来产生相同的功率。计算主要性能参数，以计算太阳直接正常辐射强度（DNI）和环境空气温度的每小时变化，以分析使用太阳能代替辅助燃烧的环境效益。结果表明，按照ISCC情景，太阳能在年发电量中的贡献为75.14 GWh，占总量的2.1％。此外，发现使用太阳能可每年减少产生的二氧化碳排放量36.13千吨，节省燃料3.76吨。

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