IECM 12.0 beta User Manual > Modules Included with the IECM > Pulverized Coal (PC) Plant > GET RESULTS > NOx Control > 2. Hot-Side SCR >

O&M Cost

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This is a standard O&M cost result screen. The Hot-Side SCR system has the following variable cost components:

•Catalyst: Replacement catalyst cost per year for the hot-side SCR. This is a function of the Number of Catalyst Layers, the Catalyst Replacement Interval, and the Catalyst Space Velocity performance parameters.

•Ammonia: Ammonia reagent cost per year for the hot-side SCR. This is a function of the concentration of NOx in the flue gas and the ammonia mass flow rate.

•Water: Cost of water used to wash ammonia that deposits in the air preheater. This is a function of the efficiency and concentration of ammonia removed by wash water performance parameters and the amount of ammonia salts deposited on the air preheater.

•Electricity: Cost of electricity consumption of the hot-side SCR. This is a function of the gross plant capacity and the Hot-Side SCR Power Requirement performance parameter.