Abstract
The recovery of waste heat is an effective way of energy conservation, and the total amount of industrial waste heat is still notable. However, the value of the waste heat as energy source is low (low exergy). Therefore, its utilization requires larger recovery systems with increased costs. A concept of introduction of second, high-quality heat source in the form of H_2-O_2 combustion in order to improve the system's performance is presented. System analysis regarding obtaining combination effect (higher output from combined sources than from separate ones) is provided. The investigation results show possibility of remarkable merit of the considered systems under moderate conditions. The proposed combination of low-and high-quality heat sources makes reduction of systems' size and cost possible as well.
