TERMÝK SANTRALLARDA JEOTERMAL ENERJÝDEN YARARLANMANIN YAKIT TASARRUFUNA VE SANTRAL PERFORMANSINA ETKÝLERÝ

Ülkemizin elektrik enerjisi ihtiyacýný karþýlamada termik santrallarýn payý % 61’dir. Termik santrallarda kullanýlan fosil yakýtlarýn hýzla tükenmesi, yakýt tasarrufunun önemini ortaya koymaktadýr. Bu çalýþmada termik santrallarda kazan besleme suyunun, düþük sýcaklýklý jeotermal kaynaklardan yararlanarak ön ýsýtýlmasýnýn, santral genel verimi ve yakýt tasarrufu üzerindeki etkileri incelenmiþtir. Yapýlan analizlere göre bir termik santralda, jeotermal ön ýsýtma ile saðlanacak verim artýþý % 2-4 aralýðýnda olmaktadýr. Bu çalýþmada incelenen ve klasik Rankine çevrimine göre çalýþan bir kömür yakýtlý termik santralýn, jeotermal ön ýsýtma ile yýllýk parasal yakýt tasarrufu yaklaþýk olarak 1 milyon US$ ve verim artýþý da % 4.1 olmaktadýr.

THE EFFECTS OF UTILIZING GEOTHERMAL ENERGY IN THERMAL POWER PLANTS ON THE PLANT PERFORMANCE AND FUEL SAVING

The share of electricity production from thermal power plants for Turkey is about 61 %. Since the fossil fuels are rapidly consumed, the concept of fossil fuel saving is very important for humanity. In this paper, the effects of boiler feed water preheating by means of geothermal brine on overall performance and fossil fuel savings in thermal power plants are examined. According to the performed analysis, power plant thermal efficiency could be increased of 2-4 % via geothermal preheating. In this analysis, a hypothetical thermal power plant is considered and its performance is evaluated. According to analysis, 1 million US$ in fossil fuel savings and 4.1 % increase in thermal efficiency could be achieved by the use of geothermal preheating.