Performance assessment and leakage analysis of feed water pre-heaters in natural gas-fired steam power plants

• Autorzy: Shabani G. A. S. , Ameri M. , Akbari O. , Seifi A.
• Języki publikacji: EN

Abstrakty

EN

The performance of feed water pre-heaters (FWH) at a steam power plant with a capacity of 200 MW is evaluated in this paper. The main objective of this study is to investigate the behavior of these FWHs in various cases. The effect of leakage of condensates on the condenser was also studied in detail. To do this, each FWH was studied separately and also in groups (LP, HP and both groups). While some of the results are exclusive to the studied power plant, others can be generalized to similar power plants. The results show that although LPH-1 and LPH-2 have the lowest exergy efficiency, they have the greatest effect on the efficiency of the cycle. Whereas HPH-6 and LPH-4 have the highest heat exchange (31.3 and 21.73 MW), LPH-2 and LPH-1 deliver the greatest positive effect on energy efficiency (0.81% and 0.61/0%). Moreover, the results show the particular importance of preventing any leakage of heater condensate. In the event of leakage along the route to the condensate of heaters, the most negative effect will be due to the HP heaters: 20 kg/s leakage in the HPHs line will cause an increase in CO2 production p.a. of roughly 10150 metric tons. Furthermore, energy efficiency and power produced will fall by 0.374% and 5.1 MW. In terms of the impact of leakages on the cooling tower, the study showed that LPH-1 and LPH-2 have the greatest effect. The effects of LP and HP FWHs on the energy efficiency of the cycle were 2.53% and 0.82%.

Słowa kluczowe

EN

thermal power plant; Rankine cycle; efficiency improvement; feed water heater; technical analysis; external leakage

PL

elektrownia cieplna; cykl Rankine’a; poprawa wydajności; podgrzewacz wody zasilającej; analiza techniczna; wyciek zewnętrzny

• Wydawca: Institute of Heat Engineering, Warsaw University of Technology
• Czasopismo: Journal of Power Technologies
• Rocznik: 2018
• Tom: Vol. 98, nr 4
• Strony: 352--364
• Opis fizyczny: Bibliogr. 35 poz., rys., tab., wykr.

Twórcy

autor

Shabani G. A. S.

• Mechanical and Energy Engineering Department, Shahid Beheshti University, Tehran, Iran

autor

Ameri M.

• Mechanical and Energy Engineering Department, Shahid Beheshti University, Tehran, Iran

autor

Akbari O.

• Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran

autor

Seifi A.

• Young Researchers and Elite Club, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).