FUEL OIL YANMA GAZLARINDA SU VE ASİT ÇİĞLENME NOKTALARININ UŞAK İLİ BAĞIL NEM KOŞULLARINA BAĞLI OLARAK EES İLE İNCELENMESİ
AN ANALYSIS USING EES OF THE WATER AND ACID DROPLET FORMATION POINTS IN FUEL OIL COMBUSTION GASES AS A FUNCTION OF RELATIVE HUMIDITY CONDITIONS IN UŞAK PROVINCE

Summary/Abstract: This study investigates the effect of monthly ambient temperature and relative humidity conditions in Uşak, Türkiye, on the water and acid dew points of heavy-fuel-oil flue gas using an Engineering Equation Solver (EES)-based thermodynamic model. Calculations were performed for 1 kg of fuel at 101.325 kPa and an excess-air ratio of λ=1.20, assuming that 1% of fuel sulfur is converted to SO₃. Monthly temperature and relative humidity data were incorporated through EES psychrometric relations to determine water vapor entering with combustion air. The model yielded a water dew point of 45.09-46.00 °C and an acid dew point of 134.67-135.19 °C. Seasonal atmospheric conditions caused only limited variation in both dew points, whereas the acid dew point remained approximately 89 °C above the water dew point. The results show that acid condensation constitutes the principal low-temperature operating constraint in heat-recovery systems firing sulfur-containing heavy fuel oil.

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