Thermal Energy Waste Recovery Technologies and Systems comprehensively covers thermal energy recovery technologies and systems. It considers thermal sources, working principles, products, application status, prospects, and challenges. In an effort to achieve energy security, carbon neutralization, and sustainable development, the book discusses waste recovery from thermal energy technologies and systems from varying temperatures. The book features case studies of advanced multi-generation systems for different industrial applications. The book is intended for senior undergraduate and graduate mechanical engineering students taking courses in thermal energy, energy systems, and renewable energy, as well as researchers studying thermal energy utilization, low-carbon technologies, thermal dynamic analysis, and energy system design.