Boiler efficiency can be calculated using ASME Performance Test Codes (PTC). PTC 34 is used for waste combustors with energy recovery using the boiler as a calorimeter. Using this method, the heat outputs, losses and credits must be calculated. Heat credits correct the efficiency to standard ambient conditions, such as air temperature.
2020-12-29 · This efficiency can be evaluated using the formula:-Direct Method boiler efficiency. Parameters to be monitored for the calculation of boiler efficiency by direct method are : Quantity of steam generated per hour (Q) in kg/hr. Quantity of fuel used per hour (q) in kg/hr. The working pressure (in kg/cm 2 (g)) and superheat temperature (o C), if any