Energy exergy efficiencies and environmental effects of mixed fuelled (solid plus gas) industrial facility steam boiler
Küçük Resim Yok
Tarih
2013
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this paper, an experimental study has been performed for mixed (solid + gas) fuelled boiler operating at 7000 kPa pressure and 778.15 K temperature with a nominal capacity of 25 kg s(-1) in order to find improvement in the boiler efficiency and to reduce its environmental emissions. In this scope, while the boiler was working under operating conditions, temperature, pressure, velocity, and combustion gas measurements were performed and the measured data were used to establish mass and energy balance. Main efficiency loses were identified as operation of the boiler with high excess air factor (39.78%), leakage air in the rotary air hater and surface thermal losses. Calculations, were performed with the use of measured data, estimated that the boiler and second law efficiency were calculated as 85.3 and 39.6% respectively. When the injected heat value on water is 67 433.65 kW in the boiler, by the reduction of excess air factor is 550 kW and by the prevention of leakage air is 1251.6 kW, including totally saving amount is 1801.7 kW. Financial value of this saving was calculated about 309 465$.
Açıklama
Anahtar Kelimeler
Steam boiler, Energy saving, Energy efficiency, Second law efficiency, Environmental effect
Kaynak
Journal of the Energy Institute
WoS Q Değeri
Q4
Scopus Q Değeri
Q1
Cilt
86
Sayı
4
