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What is the role of an economizer in waste heat recovery?
An economizer plays an important role in waste heat recovery systems by capturing heat from hot exhaust gases and transferring it to another process before the gases leave the facility. In many industrial applications, the recovered heat is used to preheat boiler feedwater, combustion air, or other process fluids.
This reduces the amount of fuel required to reach the desired operating temperature. As a result, the heating equipment can work more efficiently while lowering overall energy consumption. An economizer also helps reduce the amount of useful thermal energy released into the atmosphere.
The amount of heat that can be recovered depends on factors such as exhaust temperature, gas flow rate, operating conditions, and the temperature of the fluid being heated. Proper design is important because excessive cooling of exhaust gases can cause condensation or corrosion in some applications.
Regular inspection is also necessary to keep heat transfer surfaces clean and maintain good performance. When correctly sized and maintained, an economizer can make “waste heat recovery systems” more efficient and help facilities get greater value from energy that would otherwise be lost.
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