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Table 16: Stack height requirement for SO 2 control Power generation capacity Stack height (m) Less than 200/210 MWe H = 14 (Q)0.3 where Q is emission rate of SO 2 in kg/h, H = Stack height in metres 200/210 MWe or less than 500 MWe 200 200 500 MWe and above 275 (+ Space provision for FGD systems in future)
Reference [10] explains how the NPL affects the stack effect in high-rise buildings. For flue gas stacks or chimneys, where air is on the outside and combustion flue gases are on the inside, the equation will only provide an approximation. Also, A is the cross-sectional flow area and h is the height of the flue gas stack or chimney.
A flue gas stack at GRES-2 Power Station in Ekibastuz, Kazakhstan, the tallest of its kind in the world (420 meters or 1,380 feet) [1]. A flue-gas stack, also known as a smoke stack, chimney stack or simply as a stack, is a type of chimney, a vertical pipe, channel or similar structure through which flue gases are exhausted to the outside air.
United States Light-Duty Vehicle, Light-Duty Truck, and Medium-Duty Passenger Vehicle—Tier 2 Exhaust Emission Standards (for Bin 5) [4] Component Emission Rate Annual pollution emitted NMOG (Volatile organic compounds) 0.075 grams/mile (0.046 g/km) 2.1 pounds (0.95 kg) Carbon Monoxide 3.4 grams/mile (2.1 g/km) 94 pounds (43 kg) NO X
= fraction of the emitted exhaust gas, by volume, which is water vapor As an example, a wet basis concentration of 40 ppmv in a gas having 10 volume percent water vapor would have a: C dry basis = 40 ÷ ( 1 - 0.10 ) = 44.4 ppmv.
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