Advanced Materials and Systems for Waste Heat Recovery

Waste heat recovery represents a critical frontier in energy efficiency and sustainability, with industrial processes annually rejecting approximately 20-25% of total energy consumption as waste heat. This chapter examines cutting-edge materials and systems designed to capture, convert, and utilize waste heat across various temperature ranges and applications. The discussion encompasses three primary
domains: advanced materials including thermoelectric devices and phase change materials for heat storage, innovative technologies such as organic Rankine cycles and advanced heat exchanger designs, and integrated optimization approaches utilizing smart monitoring and artificial intelligence. Through comprehensive analysis of performance metrics, case studies, and comparative evaluations, this chapter demonstrates that modern waste heat recovery systems can achieve energy conversion efficiencies of 15-30% while reducing overall energy consumption by 10-40% in industrial applications. The integration of advanced materials with intelligent control systems shows particular promise, with AI optimized systems demonstrating 25% better performance than conventional approaches. These technologies are essential for achieving industrial decarbonization goals and enhancing energy security in both developed and developing economies.