Boiler and Air Heating System Models
FCYCLE provides three methods for
analyzing boiler performance
1. User Defined Steam conditions and Efficiency
Steam pressure, temperatures, spray flows, and boiler efficiency are input either as constants or curves.
2. User Defined Steam Conditions, and PTC Boiler Efficiency methods
The steam pressure, temperatures and spray flows are input either as constants or curves. The boiler efficiency
is calculated from fuel analysis using combustion calculations and based on PTC methods for air heater performance and other losses. The user supplies data for
excess air or flue gas oxygen, as well as air heater data, either as measured or design point temperatures.
3. Boiler heat transfer analysis.
The steam conditions, gas flows and temperatures, pulverizer heat balance, boiler efficiency, etc. are determined by heat transfer analysis on the furnace and convection sections of the boiler.
FCYCLE offers 3 modes of analysis for boilers:
The user enters the boiler performance and characteristics he wants, or defines them using a vendor’s data. FCYCLE computes the surface areas and other characteristics needed to attain this specified performance. These results may be used as inputs for off design heat balances in the Predictor mode.
The user enters the measured pressures, temperatures, flows, oxygen readings etc. FCYCLE computes the surface areas, cleanliness factors, and other characteristics needed to attain this measured performance. These results may be used as inputs for off design heat balances in the Predictor mode.
The user enters the surface areas, cleanliness factors, and other characteristics needed to define boiler performance. Usually this data is transferred from a “Design” or “Monitor” mode heat balance. Using thids data, FCYCLE calculates the performance expected from the boiler for any off-design condition.
The best way to understand our capabilities is to try them, by downloading and running our Demo programs.