Waste Heat Recovery Boiler Efficiency Calculation
In many industrial and commercial energy applications, only a portion of the energy input is used in the process. The remainder of the useful energy is rejected to the environment. This rejected energy may potentially be recaptured as useful energy through waste heat recovery. Waste heat recovery boiler is a boiler that utilizes the waste heat in the waste gas or waste material or waste liquid and the heat produced by burning the combustible material in the industrial production process. In the purchase of waste heat boiler, many customers not only take into account boiler price, but also asked how to calculate the boiler efficiency.
Thermal efficiency is the main reference index to select a new boiler. Ensuring efficient operation of boiler is critical to optimize the fuel costs. Boiler efficiency is a combined result of efficiencies of different components of a boiler. A boiler has many sub systems whose efficiency affects the overall boiler efficiency.
In general, we take this formula to calculate waste heat boiler thermal efficiency. η= 100-(q2+q3+q4+q5+q6), which include the Q2 flue gas losses, Q3 gas incomplete combustion losses, Q4 solid incomplete combustion losses, Q5 heat radiation losses and Q6 slag ash physical losses. The key points for calculation is to make sure the heat losses values.
We have 24/7 consumer online system, any question about waste heat recovery boiler efficiency calculation is welcomed.