Exergy Analyses of Solar Integrated Combined Cycle Power Plant
| المصدر: | مجلة الساتل |
|---|---|
| الناشر: | جامعة مصراتة |
| المؤلف الرئيسي: | Elhaj, Mohamed Abdulsalam (Author) |
| مؤلفين آخرين: | Yassin, Jamal S. (Co-Author) , Matrawy, Kassim K. (Co-Author) |
| المجلد/العدد: | س3, ع6 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2009
|
| الشهر: | أبريل |
| الصفحات: | 67 - 79 |
| رقم MD: | 813201 |
| نوع المحتوى: | بحوث ومقالات |
| قواعد المعلومات: | HumanIndex |
| مواضيع: | |
| رابط المحتوى: |
عدد مرات التحميل
2
| المستخلص: |
The objective of the present paper is to perform a thermodynamic analysis tor the main components of the solar integrated combined cycle power plant. The study is based on second law analyses. The studied solar combined cycle power plant includes, solar field, gas turbine unit and steam turbine unit. Solar concentrators are used to heat water before entering the steam generator. Saturation and superheating processes is taken place through a steam generator getting its energy from the waste heat of the gas turbine. For periods of lower radiation, an auxiliary heater can be used to raise the water temperature up saturated state before entering steam generator. A simulation mathematical model has been developed for each component of the plant. Also different thermodynamic performance parameters at all points of the plant are considered in the calculations. Evaluation of the performance of the plant is based on different thermal efficiencies of the main components in addition to the second law analyses considering the exergy destructions for the whole components. The contribution factors including the solar as well as the wasted energy are considered in the calculations. The final results showed that there is significant exergy destruction in solar concentrator and the combustion chamber of the gas turbine unit. Other components such as compressor, gas turbine, steam turbine and heat exchangers having insignificant exergy destruction. Also, solar energy can contribute by about 27 % of the input energy to the plant while the energy lost with exhaust gases can contribute by about 64 % at maximum cases. |
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