Unformatted text preview: 2 O at 21.1 °C and 37.7 °C is 18.6 mmHg and 48.7 mmHg, respectively]. Problem 2. 1000 kg of coal is being burned with 30% excess of air. The initial temperature of air is 25 °C, P = 760 mmHg and its relative humidity is 70%. The coal consists of 65% C, 5.6% H, 0.7% N, 1.7% S, 20% moisture, 7% ash (the percent numbers are weight percent). The combustion converts C into CO 2 , H into H 2 O, S into SO 2 , and N into N 2 . This mixture exits the combustor via the flue gas stack at P = 760 mmHg. What is the dew point of the flue gas? [Note: (1) vapor pressure of H 2 O at 25 °C is 23.6 mmHg, (2) for H 2 O , the constants for Antoine equation are A = 18.3036, B = 3816.44, C = -46.13]....
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- Spring '14
- Environmental Engineering, Atmospheric thermodynamics, Water vapor, Department of Civil and Environmental Engineering, Wet bulb temperature