What is Heat Balance Diagram?
Heat Balance Diagram or HBD for Thermal Power Station is the basically schematic representation of the whole steam cycle from Boiler to High Pressure (HP) Turbines Intermediate Pressure (IP) Turbines and Low Pressure (LP) Turbines to condenser to pumps to re-heaters and again to boiler.
This diagram also contains some information of steam properties like Pressure Temperature, enthalpy and mass of the steam at every junction of the line.
What information the HBD has?
As mentioned above, Heat Balance Diagram or HBD has the heat equation at points before and after every component. Considering the first point after the boiler, knowing the https://itehil.com/ steam properties, pressure and temperatures, other properties like enthalpy of the steam can also be determined. Knowing the efficiencies and considerations like pressure drop across the control valves, these properties along the cycle can be determined, thus the heat rate of the system. With help of heat rate, the mass of steam required can be determined.